Kalshi fined Santos exactly four times the $17,839 he made betting on his own attendance
The exchange's penalty came in at roughly double the CFTC's settlement over the same trades, which makes this the first case where a prediction-market venue priced its own integrity failure higher than its regulator did.
The Investor · Invest desk
What happened
- Kalshi's compliance department permanently banned George Santos in a notice dated Aug. 28 and assessed a $71,356 penalty over trades in a market that settled on whether he attended the State of the Union.
- A separate CFTC order dated July 31, covering the same trades, imposed a three-year trading ban on Santos and more than $35,000 in payments.
- After Santos asked his X followers which suit to wear, the Yes contract rose from about 15 cents to 70, and he sold the whole position for a $3,448.43 profit before withdrawing $10,146.07 by Venmo.
- Kalshi also fined North Carolina congressional candidate Laurie Buckhout $2,589 and banned her for three years over bets she puts at under $1,000 on her own campaign, which she called a dumb mistake.
Why it matters
- What it sets up precedent A venue with no statutory penalty authority has now published a four-times-profit number, and the next exchange that settles a manipulation case for less will be asked why its rulebook is cheaper.
- What it limits constraint Because the prohibition binds the trader rather than the listing, any contract settling on one named person's choice commits the venue to policing after the fact the single participant it cannot screen out in advance.
- Who's exposed exposure Nothing in the record describes how the exchange actually recovers $71,356 from a banned user, so the penalty is worth whatever funds Kalshi can still reach rather than its face value.
- What doesn't add up contradiction Kalshi found a failure to cooperate while Santos's lawyer says his client cooperated federally on what was his first prediction-market trade, so the same two weeks support both a lifetime ban and a routine settlement.
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A penalty set at exactly four times profit is a borrowed shape, disgorgement plus treble: $71,356 against $17,839.57, imposed by a compliance department rather than a court [1][2][15]. Stack the CFTC's $35,000 settlement, which Santos took without admitting or denying the allegations, on top, and the two actions come to $106,356 against that profit, call it six times the gain and fifteen times the roughly $7,000 he deposited on Feb. 11 [7][17][27][28][29]. The venue's number landed at about twice the regulator's [26], and Kalshi got there with a members' agreement and a door it can close.
Read as a trade rather than a scandal, the positions are almost disciplined. The Yes leg averages about 21.7 cents across 30,874 contracts and the No leg about 36.3 cents across 23,855 [18][20][31][32], and he closed the No side early on Feb. 25 for $23,041.23 of proceeds, roughly 96.6 cents against a dollar the market had all but conceded, leaving about $814 of near-certain money behind [21][33]. The two realised gains add to $17,839.00, which is 57 cents short of the figure Kalshi multiplied by four [30]: small, and a useful reminder that the exchange's notice and the regulator's timeline are not the same document.
On the eve of the speech Kalshi's own market had him attending at close to 75%, and the Yes contract went from 73 cents to 2 [8][24]. Every counterparty was pricing a fact one identified participant controlled. Rule 5.17(z) forbids that participant from trading it [16]; it does not forbid listing it, and the venue's stated remedy, employment verification in sensitive markets [12], reaches a case like Gabriel Perez, the former White House teleprompter operator the CFTC ordered to pay more than $172,000 over mention markets [10], far better than it reaches a settlement condition that is one man's travel decision.
This is probably wrong, but the four-times multiple looks less like a schedule than a surcharge for one aggravating fact. Kalshi cited failure to cooperate promptly and fully [3], and told Fortune that the four other cases announced the same day drew temporary bans precisely because those traders cooperated [4]. Laurie Buckhout's $2,589 works out to at least 2.6 times her maximum stake of under $1,000 [22][34], and Stephen Cloobeck bought $10,000 of contracts on his own candidacy and got three years [23]. What would prove me wrong is the next uncooperative member drawing 4x on the nose. With no bill passed [12], the enforceable perimeter is a CFTC order plus a private rulebook, plus the blacklist each venue keeps alone, which is what Polymarket was doing when it cut ties with Santos in June [13]. Santos calls the exchange "an unserious company" [9]; in March he told his podcast audience that people lost money and that it showed how fragile these markets are [14]. On the second point he was describing the product accurately.
What to watch
- Whether Kalshi keeps listing contracts that settle on one named person's discretionary act, or retires the category outright.
- Whether the MrBeast editor probe ends in a fine with a published multiple or a quiet exclusion.
- Whether Polymarket starts publishing disciplinary notices with numbers attached rather than unpriced exclusions.
Information, not investment advice. This story is general information about companies and markets, drawn from cited reporting. It is not a recommendation to buy, sell or hold any security; check the cited sources before acting.
Clarity's read
What the record supports and how the coverage leans. The claims behind it follow.
Reality
- Evidence84
- Adoption71
- Hype gap+14
- Incentives62
- Confidence79
Perspective Coverage
7 publishers- Builder
- Builder 15%
- Operator
- Operator 49%
- Investor
- Investor 36%
Claim ledger
Ranked by verification strength, evidence, and original report placement.
- [1]
Kalshi's compliance department, in a disciplinary notice dated Aug. 28, permanently suspended George Santos from direct or indirect access to the exchange and imposed a $71,356 penalty.
- [2]
Kalshi found Santos profited $17,839.57 from contracts tied to whether he would attend the 2026 State of the Union address, after placing large trades between Feb. 2 and Feb. 25.
- [3]
Kalshi cited violations of rules against market manipulation, trading with material nonpublic information, trading on an outcome a member can influence, and deceptive schemes, and found Santos failed to cooperate promptly and fully with its investigation.
- [4]
Kalshi spokesperson Elisabeth Diana said it was the first permanent ban in the company's history, and that those affected by four other enforcement cases announced the same day would be banned only temporarily because they cooperated with the probe.
- [5]
Santos's attorney Joseph W. Murray said Santos cooperated with the CFTC investigation, that the address was the first time his client placed a trade on a prediction market, and that Santos had reserved travel and a hotel because he expected to attend.
- [6]
A separate CFTC order issued July 31 imposed a three-year trading ban and over $35,000 in payments on Santos.
- [7]
Santos paid $35,000 to settle with the CFTC without admitting or denying the agency's allegations that he manipulated the State of the Union contract through public statements that moved its price significantly.
- [8]
After Santos posted on Feb. 24 that he was watching the address on an airport television, the Yes contract fell from $0.73 to $0.02.
- [9]
On X, Santos called Kalshi "an unserious company" and labelled the ban "frivolous nonsense".
- [10]
The CFTC ordered Gabriel Perez, a former White House teleprompter operator, to pay more than $172,000 for using advance access to Trump's speeches to profit from mention markets on Kalshi.
- [11]
In April the Department of Justice arrested an active-duty U.S. Army soldier who allegedly traded on confidential information on Polymarket ahead of the arrest of former Venezuelan president Nicolas Maduro.
- [12]
Bipartisan bills to prohibit trading by individuals with non-public information have been proposed but none has been approved, and Kalshi and Polymarket rely on their own approaches, such as verifying the employment of traders in sensitive markets.
- [13]
The federal probe prompted Polymarket to cut ties with Santos in June.
- [14]
On his podcast in March, Santos said of his State of the Union attendance markets: "I guess people lost money. Some people made unexpected money. That's to show you how fragile these markets are."
- [15]
The $71,356 penalty is exactly four times the profit amount listed in Kalshi's notice.
- [16]
Kalshi Rule 5.17(z) prohibits members from trading contracts when they can affect the underlying outcome.
- [17]
The CFTC said Santos opened his Kalshi account on Feb. 11, deposited about $7,000, and used the funds exclusively to trade on his own attendance.
- [18]
From Feb. 12 through Feb. 22 Santos accumulated 30,874 Yes contracts at a total cost of $6,695.94.
- [19]
After Santos asked his X followers whether to wear a serious or bedazzled suit, the Yes contract rose from about $0.15 to $0.70; he sold the full position for a $3,448.43 profit and withdrew $10,146.07 through a Venmo account created four days earlier.
- [20]
On the evening of Feb. 23 a video repeating his attendance plans sent the contract from $0.40 to $0.70, and about 40 minutes later Santos began buying No contracts, eventually acquiring 23,855 for $8,650.66.
- [21]
Santos closed the No trade early on Feb. 25 for a $14,390.57 profit, according to the CFTC.
- [22]
Kalshi levied a $2,589 fine and three-year ban on North Carolina congressional candidate Laurie Buckhout, who admitted placing bets of less than $1,000 on her campaign and called it a dumb mistake.
- [23]
Kalshi imposed three-year bans on Stephen Cloobeck, who it says bought $10,000 of contracts on his California governor candidacy, and Ben Midgley, who bet less than $1,000 on his Maine campaign.
- [24]
On the eve of Trump's speech, Kalshi put the odds of Santos attending at close to 75%.
- [25]
A MrBeast video editor was fired amid a Kalshi insider-trading probe.
- [26]
Kalshi's $71,356 penalty is about 2.04 times the $35,000 CFTC settlement.
- [27]
Kalshi's penalty plus the CFTC settlement total $106,356.
- [28]
Combined penalties of $106,356 are about 5.96 times the $17,839.57 profit.
- [29]
Combined penalties of $106,356 are about 15.2 times the roughly $7,000 Santos deposited.
- [30]
The two realised gains in the CFTC timeline sum to $17,839.00, which is 57 cents below the $17,839.57 figure in Kalshi's notice.
- [31]
Santos's Yes position averaged about 21.7 cents per contract.
- [32]
Santos's No position averaged about 36.3 cents per contract.
- [33]
The No position returned proceeds of $23,041.23, about 96.6 cents per contract, roughly $814 short of the $23,855 a full dollar settlement would have paid.
- [34]
Buckhout's $2,589 fine is at least 2.6 times her maximum admitted stake of under $1,000.
- [35]
Kalshi has rolled out new safeguards to address mounting scrutiny.
Sources
7 independent publishers whose own reporting we read for this story.
- cnbc.comKalshi bans ex-congressman George Santos over illegal trading
1 article · August 31, 2026
- crypto.newsKalshi bans George Santos for $17,839 market manipulation
1 article · August 31, 2026
- cryptopolitan.comKalshi bans former GOP Rep. Santos, orders $71K penalty
1 article · August 31, 2026
- decrypt.coGeorge Santos Bet on Whether He'd Show Up to the State of the Union—Kalshi Just Banned Him for Life
1 article · August 31, 2026
- finance.yahoo.comGeorge Santos gets lifetime ban from Kalshi prediction market
3 articles · August 31, 2026
- fortune.com‘I bet on myself. Literally’: Ex-Congressman George Santos banned for life from Kalshi after making $17,839 from insider trading
2 articles · August 31, 2026
- nbcnews.comKalshi bans George Santos for betting on himself
1 article · August 31, 2026
Topics and entities
Topics
- Prediction Markets
- Event contract regulation
- Insider Trading
- Exchange self-regulation
- Market Manipulation and Correction
Entities
- Stephen Cloobeck
- CFTC
- George Santos
- Polymarket
- Kalshi
- Joseph W. Murray