Sean Penn Won Best Supporting Actor. Buscemi Still Sits at 3%.

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Steve Buscemi's Oscar Odds Collapsed Because the Race Was Already Over

Sean Penn accepted his third Academy Award on March 15, 2026, winning Best Supporting Actor for his role in One Battle After Another at the 98th Academy Awards. The envelope has been opened, the speech has been given, and the statuette sits on Penn's mantle. Steve Buscemi was not among the nominees. He was never on the ballot.

And yet, across Kalshi and Polymarket, Buscemi's implied probability of winning that same award still reads 3%. Three days ago, it was 16%. The 13 percentage point collapse is the market correcting toward reality, but the fact that it hasn't reached zero raises a question more interesting than the drop itself: what does it mean when a prediction market prices a resolved event as though it still has uncertainty?

Prediction-market view

Live prices, venue by venue

Compare the latest YES price at each venue. Check market rules, liquidity, and fees before trading.

Steve Buscemi

Consensus YES price across 2 venues

3%average

KalshiBest YES price1¢Polymarket7.8¢

Tie

Consensus YES price across 1 venues

1%average

KalshiBest YES price1¢

Channing Tatum

Consensus YES price across 1 venues

1%average

KalshiBest YES price1¢

Paul Giamatti

Consensus YES price across 2 venues

37%average

KalshiBest YES price35¢Polymarket40¢

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The spread between platforms tells its own story. Kalshi prices Buscemi at 2%. Polymarket holds at 4%. Neither number should exist. Penn's win is not speculative. It is documented, filmed, and available to watch. The 3% average across platforms is not a forecast. It is market friction made visible.

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How Steve Buscemi Reached 16% in a Race He Wasn't In

Before nominations locked, prediction markets on Oscar categories function more like sentiment surveys than informed price discovery mechanisms. Buscemi, a respected character actor with decades of critical admiration, is the kind of name that draws speculative interest early in awards season. When the field is wide open and dozens of performances are in play, casual bettors gravitate toward recognizable names. That behavior can push a non-contender into double digits if liquidity is thin enough.

The actual nominee slate for Best Supporting Actor included names like Stellan Skarsgård (Sentimental Value), who had won the Golden Globe, and Delroy Lindo (Sinners). Penn, meanwhile, had swept the BAFTA and SAG Awards heading into Oscar night, making him the consensus favorite among industry trackers. Buscemi did not appear in any major precursor race. His 16% was not an informed bet. It was noise that persisted because no one with capital had sufficient incentive to sell it down in a low-volume contract.

Prediction markets on entertainment awards often carry phantom prices for popular names until a hard catalyst (nominations, the ceremony itself) forces a reckoning. Buscemi's 16% was that kind of artifact. The drop to 3% is the reckoning, delayed by nearly five months after the ceremony.

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Buscemi's Odds Timeline Against the Nomination Cutoff

The three-day window captures the steepest portion of the decline. Buscemi touched a period low of 2% before settling at 3%. The shape of the move is instructive: it was not a gradual bleed driven by shifting consensus. It was a stair-step correction, likely triggered by a small number of informed participants selling into stale bids. In markets with limited liquidity, even modest sell pressure can produce dramatic percentage point moves, which is precisely what happened here.

The timing, nearly five months after the March 15 ceremony, suggests this was not driven by any new information. The catalyst was likely mechanical: contract expiration approaching, a platform audit, or simply a trader noticing the absurdity of a non-zero price on a resolved outcome. The market's resolution date is listed as March 14, 2027, meaning these contracts technically remain open for months, creating a window where dead positions can persist far longer than logic would suggest.

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The Strongest Case for Buscemi at 3%

There is no case. This is not a diplomatic hedge or a rhetorical exercise. The 98th Academy Awards have concluded. The winner has been announced. Steve Buscemi was not nominated. For the 3% to be correct, the Academy would need to retroactively rescind Penn's win and re-run the category with a different nominee slate, a scenario without precedent in the 97-year history of the Oscars.

The only honest explanation for the remaining 3% is platform mechanics. On Kalshi, the 2% likely represents the minimum tick size or the last unfilled ask in an illiquid order book. On Polymarket, the 4% may reflect automated market makers holding open positions that no human has bothered to close. In both cases, the price is not a probability estimate. It is the cost of apathy in a low-stakes contract.

For anyone considering this a buying opportunity: it is not. You would be paying 3% of the contract value for an asset that will resolve to zero. The spread between platforms does not represent an arbitrage opportunity. It represents two slightly different flavors of market inefficiency on a contract that should have been zeroed out months ago.

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What This Market Actually Tells Us About Prediction Pricing

The Buscemi contract is a useful case study in the limitations of prediction markets for entertainment awards. Unlike sports, where outcomes are binary and information is abundant, Oscar markets suffer from three structural weaknesses: low liquidity before and after the nomination window, a long gap between resolution and contract expiration, and a participant base that skews toward casual engagement rather than informed speculation.

Penn's win was not a surprise. He entered the ceremony as the clear favorite after dominating the precursor circuit. The market got the winner right for those who were paying attention. But the persistence of phantom prices on non-contenders like Buscemi reveals how much of the "market" in entertainment prediction markets is really just unattended positions gathering dust. The 3% is not a signal. It is a ghost, and it will resolve to zero when the contract expires on March 14, 2027, no sooner and no later.