Polymarket
Polymarket is a decentralized prediction market platform built on the Polygon blockchain where users trade shares in the outcomes of real-world events including elections, sports, politics, and current events. The platform operates through cryptocurrency-based betting on yes/no outcome markets using USDC tokens.
Score generated by AI agents based on publicly cited evidence and reviewed by the project maintainer. Not independently validated. Last assessed 2026-10-01. Score revised 2026-10-01: 50 → 56.
Score History
Timeline events are AI-curated from public reporting. Score trajectory is derived from documented events.
Shayne Coplan launched Polymarket during the pandemic as a small, fee-free market on Polygon settled in USDC. It ran more than 900 event markets without the CFTC registration they required, but at its scale few extractive dynamics had appeared.
The CFTC fined Polymarket $1.4 million for running an unregistered facility. Polymarket geoblocked the U.S. and kept serving the rest of the world offshore, though many Americans reportedly got around the block with VPNs. A Series A from General Catalyst funded the platform, and the 2023 Titan submersible market showed how UMA token votes could decide contested resolutions.
A Founders Fund-led Series B came as the 2024 presidential market pulled in billions of dollars, followed by the Theo whale's multi-account positions, an FBI search of the CEO's home, and France's investigation. Bans spread across Europe and Asia in early 2025. Wash trading peaked, bots extracted about $40 million, and a UMA whale forced a false resolution of the $7 million Ukraine market without refunds.
With DOJ and CFTC probes closed, Polymarket bought the CFTC-licensed QCEX exchange, took up to $2 billion from ICE, and relaunched in the U.S. in December 2025. Trading was still mostly fee-free, but the UFO-files resolution, a login-provider breach, suspicious war and Maduro bets, mocking a problem gambler, death markets and a hidden fake-bet creator campaign marked the era. New bans (Portugal, Argentina) and a Nevada court order followed.
Taker fees on nearly every category ended the zero-fee model, and Polymarket added leveraged perpetuals, opened its U.S. app to the public in May, launched parlays, and raised its U.S. fee curve. Annualized revenue passed $1 billion. The WSJ exposed the staged-bet marketing and conflicted oracle votes, a third breach hit, and Nevada, Kentucky and New York moved against it. Late in the era it added deposit limits and self-exclusion.
Alternatives
A forecasting community where users make predictions on real-world events and are tracked for accuracy over time — no money at stake. For users drawn to prediction markets as an information-aggregation tool or intellectual exercise rather than gambling, Metaculus provides the same outcome-forecasting experience with a rigorous scoring system and no financial risk. Easy switch — just create a free account.
A CFTC-regulated prediction market covering elections, economics, sports and current events, funded from a bank account instead of crypto wallets and USDC. Kalshi resolves disputed markets itself rather than through a token-holder vote, which avoids the UMA disputes that have hit Polymarket. It has its own drawbacks: it runs an in-house trading team, and it faces the same state gambling suits (New York sued it two months before Polymarket).
In the News
Dimensional Breakdown
Summaries below were written by AI agents based on the cited evidence. They are editorial interpretations, not independent research findings.
Dimension History
Timeline (74 events)
Polymarket founded as COVID prediction market
Shayne Coplan launched Polymarket (originally Union.market) from his New York apartment during the COVID-19 pandemic quarantine, aiming to price real-world events and counter pandemic misinformation by having forecasters put money behind their views. The platform ran on the Polygon network and settled in the USDC stablecoin, letting users trade on the outcomes of real-world events.
Polymarket raises $4M seed round
Polymarket raised $4 million in a seed financing round led by Polychain Capital, with participation from crypto figures including Naval Ravikant. The funding enabled the platform to expand beyond its initial COVID-related markets into broader event categories.
Polymarket raises $25M Series A
Polymarket closed a $25 million Series A round led by General Catalyst around the end of 2021, coinciding with the CFTC inquiry; the round was not publicly disclosed until May 2024, when Polymarket announced it together with its Series B.
CFTC fines Polymarket $1.4 million for illegal operations
The Commodity Futures Trading Commission ordered Polymarket (operating as Blockratize, Inc.) to pay a $1.4 million civil monetary penalty for operating an unregistered facility for event-based binary options since June 2020. The platform had offered over 900 separate event markets without required DCM designation or SEF registration, violating the Commodity Exchange Act. Polymarket received a reduced penalty due to 'substantial cooperation.' The enforcement action revealed that the startup had been operating illegally for its entire 18-month existence, exposing fundamental governance failures.
Polymarket blocks U.S. users and moves offshore
Following the CFTC settlement, Polymarket blocked access for United States users via IP-based geofencing and moved operations offshore. However, the platform continued serving non-U.S. users globally, and reporting later revealed that many U.S. users circumvented the geofencing using VPNs, creating an ongoing compliance challenge.
Titan submersible betting sparks ethics and oracle debate
Interest in Polymarket surged when betting markets on the missing Titan submersible went viral, with over $2 million wagered on whether the vessel would be found. After the U.S. Coast Guard confirmed a 'catastrophic implosion' killing all five passengers, a dispute arose over whether debris constituted the submarine being 'found.' The UMA oracle resolved the market via token-holder vote, with critics alleging whale voters manipulated the outcome for financial gain. The incident foreshadowed future oracle disputes and marked the first major controversy over users losing money through questionable resolutions.
Polymarket raises $45M Series B from Founders Fund
Polymarket raised a $45 million Series B led by Peter Thiel's Founders Fund, with participation from Ethereum co-founder Vitalik Buterin, bringing its total raised across its Series A and B to $70 million. The round positioned the platform for the 2024 U.S. presidential election cycle, on which more than $125 million had already been bet.
French whale 'Theo' exposed with $28M across 4+ accounts
CNBC and other outlets reported that a French trader known as Theo had built a pro-Trump position of over $28 million using four accounts (Fredi9999, Theo4, PrincessCaro, Michie), which Polymarket confirmed were controlled by one person. Chainalysis later linked as many as 11 accounts to him. Polymarket said an investigation involving third-party experts had found no information suggesting he manipulated the market, without publishing its methodology. A Bloomberg analysis later put his profit near $85 million.
2024 election market draws $3.2 billion in bets by Election Day
Polymarket's presidential election market had drawn $3.2 billion in bets as of Election Day, with $1.3 billion wagered on Trump and $827 million on Harris; later tallies put the campaign total near $3.6-3.7 billion. The market correctly favored Trump, but concerns about large whale traders and the lack of position caps raised questions about whether prices reflected genuine information aggregation or concentrated capital.
France launches investigation after Theo whale controversy
France's gambling regulator Autorite Nationale des Jeux (ANJ) told The Block it was investigating Polymarket's compliance with French gambling law after a French trader was estimated by Chainalysis to have made about $79 million betting on Trump's election victory. French media reported the ANJ could block the site; Polymarket was blocked in France that November, the first in a cascade of European restrictions.
FBI raids CEO Shayne Coplan's apartment
FBI agents raided Polymarket CEO Shayne Coplan's New York City apartment early on November 13, seizing his phone and electronic devices. Bloomberg and The New York Times reported the Department of Justice was investigating whether Polymarket allowed U.S. residents to trade on the site in violation of the 2022 CFTC settlement. Polymarket called it 'obvious political retribution by the outgoing administration.' Coplan was not arrested or charged.
Poland bans Polymarket as European crackdown begins
After France and Switzerland blocked Polymarket in November 2024, authorities in Poland, Singapore, Thailand and Belgium imposed bans at the start of 2025, with Poland adding the platform to its register of prohibited gambling websites. The bans marked the start of a broad global regulatory crackdown in which each country treated prediction markets as unlicensed gambling.
California wildfire betting markets draw backlash
Polymarket allowed users to bet on approximately 20 predictions related to the devastating California Palisades and Hollywood Hills wildfires, including how many acres would burn and whether the fire would spread to Santa Monica. Some pools exceeded $100,000. Critics condemned gambling on a disaster that killed at least five people and forced over 100,000 to evacuate. Polymarket defended the markets as providing 'invaluable real-time answers.'
UMA whale manipulates $7M Ukraine mineral deal market
A whale holding approximately 5 million UMA tokens used three accounts to cast 25% of total votes and force a 'Yes' resolution on a $7 million market about whether Ukraine would agree to Trump's mineral deal before April, despite no deal having been agreed. The market's odds moved from 9% to 100%. Polymarket refused refunds because the outcome 'wasn't a market failure,' called it an 'unprecedented situation,' and said it was working with UMA to make sure it would not happen again.
Founders Fund leads $150M raise at $1.2B valuation
Polymarket raised a 2025 round led by Peter Thiel's Founders Fund; reports in June 2025 described a roughly $200 million raise at about a $1 billion valuation. In October 2025, CEO Shayne Coplan disclosed the round as $150 million at a $1.2 billion valuation, one of two previously unannounced rounds (with a $55 million 2024 round led by Blockchain Capital) totaling $205 million, intensifying the venture-subsidized growth model.
DOJ and CFTC close Polymarket probes without charges
Polymarket received declination notices from the Justice Department and the CFTC, ending a criminal and a civil investigation into whether it had accepted bets from U.S. users despite its 2022 promise not to. The criminal probe had included the November 2024 search of CEO Shayne Coplan's apartment. CNBC described the outcome as part of a pattern of the Trump administration dropping Biden-era actions against crypto and betting companies.
Polymarket acquires QCEX for $112M for U.S. reentry
Polymarket acquired QCEX (QCX, LLC), a CFTC-licensed derivatives exchange and clearinghouse, for $112 million. The acquisition provided the regulatory infrastructure needed to re-enter the U.S. market rather than building compliance from scratch. QCEX had received its CFTC designation on July 9, 2025, and the deal positioned Polymarket for a regulated U.S. launch.
Polymarket publicly shames user with gambling problem
Polymarket posted on its X/Twitter account about a user who had 'torched' more than $40,000 in two days betting on sports, asking followers 'are we watching a historic meltdown?' GamblingHarm.org criticized the post, noting that chasing losses is a sign of severe gambling addiction which carries heightened suicide risks. The incident highlighted the platform's complete lack of responsible gambling protections.
UMA restricts oracle to 37 whitelisted addresses
Following the Ukraine mineral deal oracle manipulation, UMA passed governance proposal UMIP-189 (Aug. 6) to move Polymarket from Optimistic Oracle V2 (OOV2) to Managed OOV2 (MOOV2), restricting resolution proposals to a whitelist of experienced proposers (initially 37 addresses). Anyone can still dispute a proposal. While intended to reduce bad proposals and manipulation, the change concentrated the power to propose outcomes in a small group, at odds with Polymarket's decentralized branding.
Research reveals bots extracted $40M in arbitrage profits
DL News reported on an arXiv study that analysed 86 million bets placed on Polymarket between April 2024 and April 2025 and found that 'bot-like' arbitrageurs extracted almost $40 million in near risk-free profits by exploiting mispriced markets at the expense of other users. The top three wallets alone placed more than 10,200 bets and profited $4.2 million.
ICE invests $2B at $8-9B valuation
Intercontinental Exchange (ICE), parent of the New York Stock Exchange, made a strategic investment of up to $2 billion in Polymarket at an $8 billion pre-money valuation, rising to $9 billion post-money. ICE also became a global distributor of Polymarket's event-driven data. The deal represented a massive acceleration of venture-subsidized growth, with total funding reaching $2.3 billion and intensifying future monetization pressure.
U.S. exchange fee schedule set at 0.01% of premium
A fee schedule posted for Polymarket's coming U.S. exchange set a flat taker fee of 0.01% of contract premium, which InGame calculated as more than 100 times cheaper than rival Kalshi's average of about 1.2%. InGame noted it was unclear whether the low fees were introductory; the global exchange then charged no trading fees.
Columbia study reveals 25% of trading volume is wash trading
A Columbia University study published on SSRN found that approximately 25% of all Polymarket trading volume over the past three years was wash trading. The artificial activity peaked at nearly 60% of weekly volume in December 2024, with some weeks in sports and election markets exceeding 90% inauthentic activity. The researchers noted that Polymarket's lack of identity verification and zero fees made it especially vulnerable.
Phishing campaign drains $500K+ via comment sections
Scammers used Polymarket's comment sections to post obfuscated phishing links offering access to 'private markets' with better odds. Users who logged in via email on the fake sites had scripts implanted and their accounts drained, with losses estimated by traders at over $500,000. Community members demanded that Polymarket add comment moderation.
Polymarket re-enters U.S. market with CFTC approval
Polymarket launched its U.S. app on December 3, 2025, inviting users from a waitlist and starting with sports markets, after the CFTC approved an amended order of designation on November 25. The return lifted nearly four years of restrictions on American users and ran through the QCEX exchange it bought for $112 million rather than a multi-year registration process, raising questions about how state gambling regulators would respond.
Polymarket recruits in-house market makers to trade against users
Bloomberg reported, and CoinDesk followed up, that Polymarket was hiring an internal market-making team that would trade directly against its own customers, following rival Kalshi's in-house desk. Rutgers statistics professor Harry Crane said the motive appeared to be revenue, that the desk would price parlays offered through a request-for-quote system, and that it would make Polymarket resemble a sportsbook.
$16M UFO files market resolves 'YES' without evidence
Polymarket resolved a $16 million market asking whether the Trump administration would declassify UFO files in 2025 as 'YES,' even though no documents had been released. The only release CryptoSlate could identify was the Pentagon AARO's routine 'Official UAP Imagery' posting of unresolved 2022 items, not a White House declassification order. Late buyers paid 99 cents or more before the market resolved through UMA's oracle after multiple disputes, creating a credibility crisis.
Brown University shooting betting market created
Polymarket allowed betting markets on whether the suspect in the Brown University mass shooting would be arrested, with over $430,000 traded while survivors were still in hospital. Critics raised concerns about perverse incentives, including the possibility that the shooter or people with knowledge of the case could bet on the outcome, and that the market could incentivize false tips to delay an arrest.
Security breach drains user accounts via third-party flaw
Multiple Polymarket users reported finding their positions closed and balances drained to $0.01 after suspicious login attempts. The company attributed the breach to 'a vulnerability introduced by a third-party authentication provider'; users suspected Magic Labs, an email-login tool. Polymarket said it affected 'a small number of users' and that it would contact them, but did not disclose how many users were affected or how much was stolen.
Taker fees introduced on 15-minute crypto markets
Polymarket quietly added taker fees to its 15-minute Bitcoin and Ethereum up/down markets, its first fees on the global platform. The fee curve peaks near 50-50 odds at about $1.56 per 100 shares, and the proceeds were paid back daily to market makers as rebates. Polymarket said the aim was to discourage high-frequency bot strategies; traders noted bot wallets kept trading.
Portugal orders Polymarket out within 48 hours
Portugal's gambling regulator SRIJ ordered Polymarket to stop operating within 48 hours after more than 103 million euros was bet on the country's January 18 presidential election, saying Portuguese law bans betting on political events. CoinDesk reported that Polymarket was already restricted in more than 30 countries.
Nevada court bars Polymarket event contracts
A Carson City judge granted the Nevada Gaming Control Board a temporary restraining order barring Polymarket from offering event contracts in the state, finding the board reasonably likely to prevail and that the balance of legal authority weighs against federal preemption. The board had sued Polymarket's parent in mid-January, calling its contracts unlicensed wagering.
NY Attorney General warns of prediction market harms
New York Attorney General Letitia James issued a consumer alert ahead of the Super Bowl warning that prediction markets like Polymarket operate without consumer protections including underage gambling prevention, addiction safeguards, restrictions on insider betting, and deceptive advertising standards. James put operators on notice that unlicensed sports wagering 'could be subject to civil and criminal liability.'
Class action lawsuit filed alleging illegal sports betting
A class action lawsuit was filed in the Southern District of New York alleging that Polymarket operates as an illegal online sports betting platform disguised as a prediction market. The 46-page complaint contends the platform is 'virtually indistinguishable' from an online casino and sportsbook, violating New York's sports betting regulations. The suit seeks to represent all U.S. residents who wagered on the platform.
Polymarket sues Massachusetts to preempt market ban
Polymarket's U.S. business sued Massachusetts Attorney General Andrea Joy Campbell and the state gaming regulator in federal court, arguing that the CFTC has exclusive federal authority over event contracts and that state enforcement would cause 'imminent and irreparable harm.' The suit followed a state court order requiring rival Kalshi to cease sports-event contracts within 30 days.
Nancy Guthrie kidnapping betting market draws outrage
Polymarket hosted a market on whether someone would be arrested in connection with the disappearance of NBC host Savannah Guthrie's 84-year-old mother, Nancy, by February 28. More than $188,000 was staked, almost twice the FBI's $100,000 reward for information. Critics called betting on a live kidnapping investigation 'stomach-turning.'
Israel indicts reservist and civilian over classified-info Polymarket bets
Israeli authorities announced indictments of a military reservist and a civilian for severe security offences, bribery and obstruction over Polymarket bets placed using classified information about military operations. Kan news had reported that a user had bet with suspicious accuracy on the timing of Israel's June 2025 strikes on Iran, profiting about $150,000.
Netherlands threatens weekly fines for illegal gambling
The Netherlands Gambling Authority (Ksa) ordered Polymarket to immediately stop offering unlicensed gambling to Dutch residents, under penalty of €420,000 per week up to a maximum of €840,000, with heavier revenue-based fines possible. The regulator cited 'social risks' including 'the potential influence on elections,' after Dutch users reportedly wagered more than $32 million on the October 2025 parliamentary elections.
Polymarket introduces taker fees on sports markets
Polymarket began piloting taker fees on sports markets starting with NCAA basketball and Italian Serie A, marking the first significant monetization move on its global platform. The dynamic fee model charges only takers with a peak fee of 0.44%, while makers trade free and receive a 25% rebate. Estimated annualized revenue could exceed $200 million after full rollout across all sports categories.
$529M traded on Iran strike bets amid insider trading concerns
After U.S. and Israeli strikes on Iran that killed the country's supreme leader, Polymarket saw $529 million traded on contracts tied to the timing of the attack, according to Bloomberg. Bubblemaps found that six newly created accounts made a combined $1 million by correctly betting that the U.S. would strike Iran by February 28, raising insider trading concerns.
Nuclear detonation betting markets removed after outcry
Polymarket pulled a market on whether a nuclear weapon would detonate in 2026, which had drawn more than $838,000 in trading volume, hours after promoting it in a now-deleted X post implying a 22% chance of a detonation by year-end. Earlier versions of the market had drawn $1.7 million and nearly $700,000. The removal came amid the Iran conflict and broader concerns about 'death markets' creating financial incentives tied to violence.
Polymarket sues Michigan over prediction market enforcement
Polymarket filed a lawsuit in federal court against Michigan AG Dana Nessel and the Michigan Gaming Control Board to prevent enforcement of Michigan's gambling laws against its sports event contracts, less than two days after Nessel sued rival Kalshi. On March 10, U.S. District Judge Paul Maloney denied Polymarket's temporary restraining order, finding the threat of enforcement remained 'in the realm of the hypothetical rather than so immediate as to warrant relief.'
Palantir and TWG AI surveillance partnership for sports markets
Polymarket partnered with Palantir and TWG AI to build a monitoring system that flags unusual trading, screens participants, and produces compliance reports for regulators and sports leagues, as scrutiny of insider trading on prediction markets grew.
Argentina orders nationwide block of Polymarket
A Buenos Aires court ordered internet providers to block Polymarket and Apple and Google to remove or restrict its apps, after a case brought by the city lottery and backed by a casino industry group. Prosecutors said the site let users fund accounts with crypto and credit cards without strong identity or age checks, exposing minors to gambling.
Polymarket tightens insider-trading rules
Polymarket updated its rules on both its U.S. exchange and offshore platform to bar trading on stolen confidential information or illegal tips, and by people in a position to influence an outcome, and posted them on a market-integrity page. Better Markets said insider-trading regulation does not work when platforms police themselves.
ICE adds $600 million, completing its commitment
Intercontinental Exchange made a further $600 million cash investment in Polymarket, on top of $1 billion invested in October 2025, and planned to buy up to $40 million of shares from existing holders, bringing its total commitment close to $2 billion.
Taker fees extended to nearly every market category
Polymarket extended taker fees from crypto and sports to politics, finance, economics, culture, weather and tech markets, leaving only geopolitics and world events fee-free. Crypto markets carry the steepest peak rate (1.80%) and sports the lowest (0.75%), with makers rebated 20-25% of fees. Daily fee revenue passed $1 million on April 1, an annualized run rate an on-chain analyst put at about $338 million, ending the zero-fee model that built the platform.
Polymarket expands into leveraged perpetual futures
Polymarket announced it would offer trading in perpetual futures, contracts that let traders hold leveraged exposure indefinitely, the day after a report that Kalshi planned crypto perpetuals. CNBC noted the move put prediction markets in more direct competition with Robinhood, Coinbase and Kraken for young, risk-tolerant retail traders.
First prediction-market insider-trading indictment unsealed
The U.S. Attorney for the Southern District of New York and the CFTC announced parallel criminal and civil actions against active-duty U.S. Army Special Forces Master Sergeant Gannon Ken Van Dyke, who allegedly used classified information about a U.S. operation to capture Venezuelan President Nicolas Maduro to buy roughly $33,000 in Polymarket event contracts and realize approximately $409,000 in profits. He was charged with three Commodity Exchange Act counts, wire fraud, and an unlawful monetary transaction, and allegedly routed funds through a foreign crypto wallet and requested deletion of his Polymarket account after suspicious activity was reported. It is the first insider-trading case involving a prediction market.
U.S. app opens to the public after six-month waitlist
Polymarket removed the waitlist and access codes for its U.S. iOS app, ending a six-month-plus closed period since its CFTC-regulated exchange first accepted trades. More than 1.4 million customers were reportedly waiting, and Polymarket was already the second-largest U.S. prediction platform after Kalshi.
60 Minutes: nine linked accounts net $2.4M on Iran war bets
Bubblemaps told 60 Minutes that nine connected anonymous Polymarket accounts made more than $2.4 million with a 98% win rate across more than 80 bets on U.S. military actions in the Iran war, including the dates of the first strikes and the ceasefire. Polymarket said it acts on suspicious activity, including referrals to law enforcement.
WSJ finds conflicted, concentrated UMA votes settle disputed markets
A Wall Street Journal investigation of Polymarket's dispute resolution found that more than 60% of active UMA voters could be linked to Polymarket accounts, that nearly one in five disputes involved at least one voter with a financial stake in the outcome, and that in most disputes the 10 largest wallets cast more than half the votes. Nothing stops token holders from voting on markets they bet on; UMA's foundation said it had seen no credible evidence of manipulation.
Internal rewards wallet drained via six-year-old key
On-chain investigator ZachXBT flagged a drain of more than $520,000 from Polymarket's internal rewards top-up wallet on Polygon; Bubblemaps later estimated the loss at about $700,000 across 16 addresses, with funds routed partly through ChangeNOW and about $164,000 frozen. The compromised private key dated back six years. Polymarket said user funds and market resolution remained safe, but the incident exposed serious internal key-management failures.
House Oversight launches insider-trading probe of Polymarket and Kalshi
House Oversight Committee Chair James Comer opened an investigation into insider trading on Polymarket and Kalshi, citing a New York Times report that more than 80 Polymarket users placed suspiciously timed bets, including ahead of undisclosed U.S. and Israeli military operations against Iran, and the federal indictment of Army Master Sergeant Gannon Ken Van Dyke. The committee requested documents on how the platforms verify account-holder identities, enforce geographic restrictions, and monitor suspicious trading, and Comer said Congressional action may be necessary.
Nevada judge grants preliminary injunction against Polymarket US
Judge Jason Woodbury granted the Nevada Gaming Control Board a preliminary injunction blocking QCX LLC, doing business as Polymarket US, from providing its services in the state, the third prediction market the board had blocked after Kalshi and Coinbase.
Strategy bitcoin-sale market resolved No despite late-May sale
UMA voters resolved Polymarket's market on whether Strategy would sell bitcoin by May 31 as No, although Strategy's June 1 filing said it sold 32 bitcoin between May 26 and May 31; the June contract resolved Yes. A few large holders, including wallets linked to UMA's developer Risk Labs, cast nearly 7 million voting weight for No, more than 25 times the Yes side.
Polymarket sues Minnesota over first-in-nation felony ban
Polymarket US sued Minnesota AG Keith Ellison, Governor Tim Walz and the state's gambling enforcement director in federal court over SF 3432, the first state law outright banning prediction markets, which makes operating one a felony and takes effect in August 2026. Polymarket argued the CFTC has exclusive jurisdiction and that it would face 'a credible threat of imminent criminal prosecution.' It was the third suit against the ban, after the CFTC and Kalshi. Ellison had said prediction markets are designed to be addictive and prey on young and low-income people.
Kentucky attorney general sues Polymarket
Kentucky Attorney General Russell Coleman sued Polymarket and its affiliates in Franklin Circuit Court, alongside separate suits against Kalshi and VGW, alleging it offers sports bets without the licences, consumer protections and taxes Kentucky requires, in violation of the state's consumer protection and gambling laws and its Loss Recovery Act.
WSJ exposes paid fake-bet marketing campaign; CFTC investigates
A Wall Street Journal investigation found that Polymarket paid dozens of creators about $2,000-$3,000 per month to film staged bets and wins, often on dummy websites cloned to resemble the platform, and told them not to disclose the arrangement. In 1,105 videos from 10 creators, a bet appeared in about 70%, and none of the wagers, worth roughly $1.9 million, were real. Across 118 videos, creators celebrated nearly $900,000 in fake wins on bets that would actually have lost more than $166,000. A hired marketing firm paid 'clippers' to repost the content, pushing it past 140 million views among mostly U.S. audiences. The CFTC opened an investigation, Senators Curtis and Schiff pressed the agency with a July 10 deadline, and a class-action suit named CEO Shayne Coplan and the CMO. Polymarket said it was auditing its promotional content.
Frontend supply-chain hack drains $3.1M, third breach in seven months
Attackers compromised a third-party vendor supplying front-end code and injected a malicious script that powered a phishing campaign tricking users into approving fraudulent transactions, draining about $3.1 million from eleven wallets and bridging the funds into roughly 1,893 ETH. It was Polymarket's third major security incident in roughly seven months, after the December 2025 authentication breach and the May 2026 operations-wallet compromise. Polymarket pledged full reimbursement of affected pUSD holders and said it removed the compromised dependency, though the pledge came days before the loss was revised upward.
Annualized revenue passes $1 billion after U.S. launch
Polymarket told CNBC its annualized revenue had passed $1 billion, six weeks after opening its U.S. exchange to the public; U.S. daily volume grew more than fourfold to over $200 million by June 20. The American Gaming Association estimated prediction markets had cost states more than $1 billion in foregone gaming taxes.
Traders sue over Strategy market resolution
Two traders sued Polymarket, CEO Shayne Coplan and CMO Matthew Modabber in New York Supreme Court, alleging the platform added a confirmation-by-deadline requirement to the Strategy bitcoin-sale market after the outcome was known. They say about 1,900 traders were denied $6.5 million in payouts, and that the after-the-fact clarification makes Polymarket's promise of rules-based resolution misleading. The claims are allegations.
Stanford study finds settlement manipulation in 5-minute bitcoin markets
Researchers at Stanford and Singapore Management University analysed about 16,000 five-minute Bitcoin contracts on Polymarket and found bursts of spot trading on Binance in the final seconds before settlement, followed by reversals, consistent with settlement-price manipulation. They estimated 821 likely manipulators earned about $8.2 million, largely at retail traders' expense, and found 15-minute contracts largely free of the effect.
Pew: typical Polymarket trader roughly breaks even over six weeks
Pew Research analysed nearly 12,000 Polymarket accounts from May 7 to June 19, 2026. The typical user made 46 trades averaging $6.50 and finished with a net loss of under $2; 58% gained or lost less than $100, 7% made over $1,000 and 9% lost over $1,000.
Federal judge blocks Minnesota's prediction-market ban
U.S. District Judge Katherine Menendez granted Kalshi, Polymarket and the CFTC a preliminary injunction against Minnesota's ban on prediction markets days before it took effect, finding the law likely at least partially preempted by the Commodity Exchange Act.
Polymarket seeks funding at over $20 billion valuation
Polymarket entered talks for a funding round valuing it above $20 billion, after closing an April round at $15 billion that included ICE's $600 million. The company had told CNBC in late June that annualized revenue was well above $1 billion.
Marketing restructured and compliance executives hired amid CFTC probe
Following the Wall Street Journal's fake-bet report and the CFTC investigation it prompted, Polymarket restructured its marketing team under new chief growth officer Travis VanderZanden, updated guidelines for promotional partners, trained staff and hired an outside firm to monitor partner content. It also hired a chief compliance officer, a chief risk officer and a head of investigations for its U.S. exchange.
Parlays (combos) open to all Polymarket US users
Polymarket US opened parlay-style combos of up to 10 legs to all app users ahead of the football season, after self-certifying them in May and testing them with API traders from August 5. Combos are priced through a request-for-quote system in which market makers respond and the bettor sees only the best offer.
Order book halted for over four hours after repeat failure
Polymarket halted trading on its order book for four hours and 17 minutes after a failure it had marked resolved five hours earlier recurred; traders could only cancel orders during the fix. The platform published no cause beyond the symptom.
15-minute bitcoin up/down markets launched on Polymarket US
Polymarket US launched a new bitcoin up-or-down contract every 15 minutes, up to 96 rounds a day, two days before New York sued its U.S. entity over unlicensed gambling.
New York sues Polymarket US; Polymarket countersues
New York Attorney General Letitia James and Governor Kathy Hochul sued QCX LLC, which operates Polymarket US, alleging unlicensed sports gambling and seeking forfeiture of gains, triple penalties, $100,000 per wagering offer, and an accounting of user losses. Polymarket moved the case to federal court and filed its own suit arguing that states cannot regulate federally regulated swaps.
Deposit limits, self-exclusion and treatment referrals added
Polymarket added voluntary lock-outs of 30 days, one year or life, daily, weekly or monthly deposit limits for U.S. users (lowered immediately, raised only after a cooling-off period), a partnership with Birches Health for compulsive-trading treatment, and a Trust & Safety page. It came six days after New York's suit; a plaintiff in a February class action had said users had no way to limit their losses.
U.S. taker fee raised to Kalshi-level curve
Polymarket US's fee schedule now charges takers 0.0695 x contracts x p x (1-p), up to $1.74 per 100 contracts at 50 cents, with a steeper separate curve for combo takers and volume rebates of up to 50% for traders with $10 million or more of monthly taker volume. The U.S. exchange had launched with a flat 0.01% fee.
Galaxy: 69% of human-paced Polymarket accounts lost money
Galaxy Research's analysis of 2.9 million human-paced Polymarket accounts found 69.2% finished below break-even, losing about $338.9 million in aggregate, while the 4.1% of accounts excluded as automated (market makers, arbitrageurs, reward farmers) made 80.8% of orders and gained about $246.8 million. The median account lost about $3.
Evidence (71 citations)
D1: User Value Erosion
D2: Business Customer Exploitation
D3: Shareholder Extraction
D4: Lock-in & Switching Costs
D5: Twiddling & Algorithmic Opacity
D6: Dark Patterns
D7: Advertising & Monetization Pressure
D8: Competitive Conduct
D9: Labor & Governance
D10: Regulatory & Legal Posture
Scoring Log (8 entries)
Checked 93 items + prose. 44 verified, 36 corrected (18 date-only), 11 re-sourced, 2 removed (2 junk sources). Invented/contradicted: UFO market 'grainy 10-minute Pentagon video' (CryptoSlate: AARO imagery release); 'very unlikely to continue forever' fee quote misattributed to Polymarket (InGame's own comment); Iran-bet accounts $1.2M (TechCrunch: $1M); Dutch order 'within four weeks' (NL Times/NOS: immediately); 12% TVL drop after phishing (OneSafe junk blog only); Theo '$80M in positions' (>$30M bet, ~$85M profit); MoonPay deposit/withdrawal revenue (Polymarket docs: no Polymarket deposit/withdraw fees); 2025 round '$200M at $1.2B' (The Block: $150M at $1.2B; June report was $200M at ~$1B). Unsupported trims: bot '0.3 seconds/90%', '368%' volume jump, 65% MOOV2 threshold, '30 court cases', sponsored markets, Series B valuation range, others. Present-tense 'zero fees' updated for 2026 fee rollout.
50→56. Since Jun 2026 (and over the last 12 months): taker fees spread to nearly all categories (Mar 30) and the U.S. fee curve rose from 0.01% to Kalshi level (Oct 1); perps, U.S. parlays and 15-minute bitcoin contracts; revenue past $1B annualized, $15B round, $20B talks; WSJ oracle-conflict findings, the Strategy resolution and the suit over it, the Stanford and Galaxy loss studies; Nevada injunction plus Kentucky and New York suits; marketing restructure and compliance hires; deposit limits and self-exclusion added Sep 30. D1 5→6 (event: fee rollout, U.S. fee rise, Strategy resolution, Galaxy losses). D2 4→5 (event: in-house market-maker recruitment, RFQ parlays, volume rebates; staged-win promoters). D3 5→4 (recalibration: private, no capital returns; old summary leaned on token speculation and a GetLatka revenue figure; monetization fits the 4 band). D7 3→6 (event + correction: fact audit removed the 'zero fees' basis; 2026 fees, perps, parlays, short-dated crypto, staged-win marketing). D8 4→6 (event/recalibration: offshore site blocked in 30+ countries incl. Portugal and Argentina 2026, Nevada injunction, preemption suits in a Polymarket-Kalshi duopoly; the old summary's 'predatory zero-fee' framing no longer applies). D4, D5, D6, D9, D10 unchanged. Eras: 'COVID-Era Launch' kept; 'CFTC Fine & Offshore Pivot' re-dated 2022-01-01→2022-01-03; 'Election Boom' re-dated 2024-06-01→2024-05-14 (Series B) and relabeled 'Election Boom & Backlash'; 'Manipulation & Bans' (dated to the 2026-06-29 rescore) split: re-dated to 2025-07-21 (QCEX, after DOJ/CFTC closure) as 'U.S. Comeback & ICE Money', plus a new 'Fee-Funded Mass Market' era from 2026-03-30 (fee expansion). Alternatives: Kalshi description stripped of unsupported comparative claims.
Removed typed-in site scores from alternatives text (they go stale on re-score; the page shows live scores). No other changes.
Periodic rescore: WSJ-exposed paid fake-bet marketing campaign + CFTC probe (D6 4->7), executive-sanctioned deception plus third major security breach in 7 months (D9 5->6), criminal insider-trading indictment, House Oversight probe, and Minnesota felony-ban litigation (D10 6->7). 45->50.
Added 2 missing dimension narratives