Kalshi hands George Santos its first-ever lifetime ban for betting on himself

Kalshi has permanently barred former U.S. Representative George Santos from its prediction market — the first lifetime ban the platform has issued — over trades tied to whether Santos would attend President Donald Trump's most recent State of the Union address. Kalshi disclosed the action in a notice of settlement of disciplinary action posted to its own site, according to The Block and CoinDesk, both of which reviewed the record.

The mechanics, as Kalshi describes them, are unusually direct: Santos placed a series of large trades in a market whose outcome hinged on his own conduct, then publicly talked up or down his attendance to move the price. "He then began making a series of public statements regarding his attendance at the event in an attempt to influence the price of Yes and No contracts," Kalshi wrote in the record quoted by CoinDesk, adding that "some of these included false or misleading statements." Santos did not attend — the outcome he ultimately bet on. CoinDesk, citing Kalshi's figures, reported he netted about $18,000 from the trades.

The financial penalty dwarfs that gain. Kalshi fined him more than $70,000, per CoinDesk, or "just over $71,000," per The Block — a range the two outlets otherwise agree on. Kalshi said the Santos matter was one of five new enforcement cases; the other four traders received only temporary bans after cooperating with the platform's investigations. Santos alone drew a permanent ban. "Mr. Santos faces additional financial penalties and will be banned permanently from trading on Kalshi given his lack of cooperation," a Kalshi spokesperson told CoinDesk.

A parallel federal case, already settled

This is not Santos's first sanction over the same trades. The Block reports that last month Santos settled with the Commodity Futures Trading Commission — which asserts jurisdiction over prediction markets — and was ordered to pay $35,000. He neither admitted nor denied the agency's findings. The CFTC said that in the two weeks before the address, Santos made public statements about whether he would attend that caused the contract's price to move "significantly."

His counsel, Joseph W. Murray, offered a more innocent account at the time. Murray said Santos cooperated with the CFTC, that the State of the Union was the first bet Santos had ever placed on a prediction market, and that Santos had booked hotel and airline reservations to Washington because he believed he was attending.

Santos is a familiar name for the wrong reasons. He represented New York from January 2023 until his expulsion later that year following a House Ethics Committee investigation into ethics violations. CoinDesk adds that he was serving a prison sentence for fraud when Trump commuted it last year.

The teleprompter operator and the "mention markets"

The Santos ban landed the same week as a related federal action. The CFTC ordered Gabriel Perez, a former White House teleprompter operator, to pay a penalty — more than $172,000 per The Block, more than $170,000 per CoinDesk — and imposed a three-year trading ban. CoinDesk reports the penalty was reduced for what the agency called Perez's "exemplary cooperation."

Perez traded Kalshi's "mention markets," contracts that pay out when a prominent figure says specific words during a public address. Having advance access to Trump's prepared remarks, he bet on words he knew were coming.

Rival platform Polymarket, meanwhile, is publicly emphasizing its own controls as the U.S. midterms raise scrutiny of the sector. Shana Bautista, Polymarket's global head of investigations and intelligence, told Reuters the company uses machine learning, blockchain analytics, trade surveillance and open-source research to flag unusual activity, and has referred more than 100 cases to authorities — including bets tied to an active-duty U.S. soldier accused of using classified information to wager on the capture of Venezuela's Nicolás Maduro, and suspected insider trading ahead of U.S. military action in Iran. Polymarket also says its systems block most U.S. users from its international platform, a requirement of its 2022 CFTC settlement.

Key facts

• Kalshi issued its first-ever lifetime ban, targeting former Rep. George Santos over trades on his own State of the Union attendance (The Block, CoinDesk).
• Fine: "just over $71,000" (The Block) / "more than $70,000" (CoinDesk).
• Kalshi says Santos netted about $18,000 from the trades and made "false or misleading" public statements to move the contract price (CoinDesk, quoting Kalshi's record).
• Santos was one of five new Kalshi enforcement cases; the other four got temporary bans after cooperating (CoinDesk).
• Santos separately settled with the CFTC last month for $35,000, without admitting or denying findings (The Block).
• The CFTC fined former White House teleprompter operator Gabriel Perez — more than $172,000 (The Block) / more than $170,000 (CoinDesk) — plus a three-year ban, reduced for cooperation.
• Polymarket says it has referred 100-plus cases to authorities and uses ML and blockchain analytics for surveillance (CoinDesk, citing Reuters).

The real-world read

Note whose account this is. The Santos narrative — the large trades, the price manipulation, the "false or misleading statements" — comes from Kalshi's own disciplinary record. Kalshi is an interested party: as a CFTC-regulated exchange, it is required to be the first line of defense against manipulation, and publishing a splashy first-ever lifetime ban of a disgraced ex-congressman during a period of intense midterm scrutiny is exactly the kind of enforcement a platform wants seen. CoinDesk says as much, framing the move as part of "the industry's ongoing efforts to show it's dealing with bad behavior." That doesn't make the allegations wrong; it means the framing is doing work.

Two accounts don't square. Kalshi says Santos was banned for life "given his lack of cooperation." Yet in the parallel CFTC matter, his lawyer said Santos cooperated fully and insisted the State of the Union was the first bet he'd ever placed. Those are different proceedings, so both can technically be true — but the benign story from Santos's counsel (a first-timer who booked flights because he genuinely thought he'd attend) sits awkwardly against Kalshi's account of a trader who placed a series of large positions on not attending and then made misleading statements to push the price his way. Given Santos's record — expelled for ethics violations, imprisoned for fraud — the self-serving version deserves the heavier discount.

Some seams are worth watching. The two outlets differ on timing: The Block says the notice was filed Monday; CoinDesk says Kalshi acted "late last week." CoinDesk also refers vaguely to federal authorities "reportedly looking into it," while The Block reports Santos already settled the federal (CFTC) piece last month — leaving it unclear whether CoinDesk is gesturing at the closed CFTC matter or a separate, live criminal probe. Neither source resolves it, and the total Santos owes — a $35,000 CFTC penalty plus roughly $71,000 to Kalshi — already runs several times the ~$18,000 he's said to have made.

Finally, Polymarket's contribution here is a company describing its own controls to Reuters while regulators circle the sector. Treat the machine-learning-and-blockchain-analytics pitch as what it is — a firm marketing its compliance posture — not as independently verified performance.

Opinion, and whose

• That these bans reflect an industry trying to demonstrate it polices itself, rather than a settled solution, is CoinDesk's framing ("efforts to show it's dealing with bad behavior").
• That Santos was an innocent first-time bettor who genuinely expected to attend is the characterization of his counsel, Joseph W. Murray, made in the CFTC matter.
• That Santos manipulated the market with false statements is Kalshi's characterization, drawn from its own disciplinary record.
• No source offers a forecast on whether pending bipartisan bills to restrict trading by people with non-public information will pass; The Block notes only that they have not.

Sources

• The Block (Sarah Wynn, Aug. 31, 2026) — Kalshi's first permanent ban; the ~$71,000 fine; Santos's prior $35,000 CFTC settlement and his counsel's statements; the Perez penalty (>$172,000); background on insider-trading bills and platform safeguards. The Block discloses that Foresight Ventures is its majority investor; the page also carried third-party sponsored placements (e.g. LMAX Digital), separate from the reporting.
• CoinDesk (Policy desk, Aug. 31, 2026) — Kalshi's lifetime-ban language and the "lack of cooperation" and "false or misleading statements" quotes; the ~$18,000 profit figure; the five-case count; the Perez three-year ban and cooperation credit; Polymarket's surveillance claims via Reuters and its 100-plus referrals. Page carried sponsored content (Anvil), separate from the reporting.
• Primary material referenced within those reports: Kalshi's posted disciplinary record (an interested party's account); the CFTC's settlement orders against Santos and Perez; a Reuters interview with Polymarket's Shana Bautista (the company describing its own controls).

This is news reporting, not financial advice; nothing here is a recommendation to buy, sell, or trade anything.