SCOTUS accepts sports event contract case by December 31, 2026?

TL;DR

The saved forecast is 5.1% Yes and 94.9% No for a qualifying Supreme Court certiorari grant by December 31, 2026. The remaining procedural calendar, rather than the importance of the dispute, drives the No forecast. Watch for accelerated Nevada briefing and an actual December conference assignment; eventual review is a different question from a grant before year-end.

Context

This market concerns whether the Supreme Court accepts a qualifying sports-event-contract case, not how it ultimately rules. The resolution requires a publicly confirmed grant of certiorari by December 31, 2026, at 11:59 PM Eastern Time. A petition, stay, briefing extension, conference assignment, or request for government views does not suffice. The case need not be argued or decided before the deadline.

As of November 3, the identified routes were Flaherty v. KalshiEX, Robinhood Derivatives v. Dreitzer, and North American Derivatives Exchange v. Nevada. None had a response brief, conference distribution, or certiorari grant recorded in the reviewed docket information. They present related disputes about federal derivatives regulation and state gambling authority, rather than three independent opportunities for review (Flaherty docket; Robinhood docket; NADEX docket).

Evidence

The historical starting point is that Supreme Court review is scarce. The Court’s official statistics for July 1, 2025–June 30, 2026 record 54 paid certiorari grants and 1,432 newly docketed paid cases. Those counts are not a matched-cohort grant rate: the grants and filings need not concern the same cases. They establish a selective background, not a mechanical probability for these petitions (official journal).

Timing history adds a separate constraint. A study published January 4, 2022 found that 66–75% of granted cases in the 2016–2020 terms had been relisted at least once. That is evidence about the path of cases eventually granted, not the chance that any pending petition receives review. Its relevance here is narrower: first consideration at the final conference of the year leaves no further scheduled conference for reconsideration before the deadline (SCOTUSblog relist study).

A concrete analogue shows that faster processing is possible. In Catholic Charities Bureau, the opposition was filed November 8, 2024, a waiver followed November 14, and the petition was distributed November 19 for the December 6 conference. It returned for consideration on December 13 and was granted that day. This illustrates a viable accelerated path with room for reconsideration. One selected success does not establish its frequency (case docket).

Against that background, the decisive current fact is the October 30 extension in Flaherty. The response deadline moved from November 9 to December 7. The extension request cited competing work obligations and stated that New Jersey did not oppose it. I read this as evidence against assuming a coordinated push for immediate consideration, not proof of an undisclosed delay strategy (official docket; extension request).

The three petitions’ filing and response schedules show where the remaining opportunity lies:

Petition	Filed	Current response deadline	Latest extension granted
Flaherty v. KalshiEX	September 2, 2026	December 7, 2026	October 30, 2026
Robinhood Derivatives v. Dreitzer	September 10, 2026	November 13, 2026	October 9, 2026
North American Derivatives Exchange v. Nevada	September 11, 2026	November 16, 2026	October 8, 2026

The key rule is easy to misread. The normal 14-day interval runs from an opposition brief to distribution, not from the brief to the conference itself. An accepted early reply or express waiting-period waiver can shorten it. Thus a November response deadline does not automatically mean December consideration (Court rules; Clerk’s scheduling guidance).

The official schedule maps November 17 distribution to the December 4 conference and November 24 distribution to December 11. Initial distributions beginning December 2 ordinarily lead to January 8, 2027. December 11 is the final scheduled 2026 conference. The special November 30 and December 7 lists ordinarily serve previously considered cases, rather than providing fresh initial-distribution opportunities (distribution schedule).

Applying those rules gives the following paths if responses arrive on their deadlines and the full waiting period applies. These are calculated schedules, not announced conference assignments (Court rules; distribution schedule).

Petition	End of waiting period	Ordinary distribution	Conference
Robinhood	November 27	December 2	January 8, 2027
NADEX	November 30	December 2	January 8, 2027
Flaherty	December 21	December 22	January 8, 2027

The substantive evidence points toward review more than the calendar does. The Third Circuit’s April 6 decision favored Kalshi’s federal-preemption position. The Ninth Circuit’s August 28 decision rejected that position, and the Sixth Circuit’s September 25 decision also rejected Kalshi’s arguments. The disagreement supports Supreme Court intervention. But these decisions arose in preliminary-injunction litigation, which gives the Court a reason to await a more developed case (Third Circuit opinion; Ninth Circuit opinion; Sixth Circuit opinion).

Regulatory activity supplies another reason to wait. The CFTC announced its sports-event swap-inclusion proposal on October 9; it was published October 19, with comments due November 18. The comment deadline is not a final-rule date. The proposal does not establish that the statutory conflict disappears, but it creates a concrete pending development the Court can allow to unfold (CFTC announcement; published proposal).

What's non-obvious

The deadline for distribution matters more than the deadline for a response. The obvious reading is that two November response deadlines leave ample time before December ends. The actual schedule is tighter. Without acceleration, both Nevada petitions point to January. Reaching December 4 preserves another scheduled conference; reaching December 11 does not. The strongest evidence for a year-end grant would therefore be procedural movement into those conferences, not another statement that the legal question deserves review (distribution schedule).

The petitioners also differ in urgency. Robinhood expressly favors waiting for further regulatory and judicial developments, while seeking companion review if another case is accepted. NADEX requests prompt review. That makes NADEX the clearest remaining ordinary route to a December grant, but it reveals advocacy positions, not the Justices’ intentions. Counting the petitions as separate, equally urgent chances would overstate the opportunity (Robinhood petition; NADEX petition).

Uncertainties

The largest uncertainty is acceleration. An accepted early Nevada reply or express waiver could secure December consideration. The separate petitions do not automatically have to wait for Flaherty. Yet distribution would still leave a second question: whether the Court grants promptly rather than holding, relisting, or seeking additional input. Those intermediate actions do not satisfy the market.

The calendar is not an absolute prohibition. TikTok’s petition was filed December 16, 2024 and granted December 18, demonstrating the Court’s capacity for extraordinary late-year action. That selected example establishes possibility, not a representative rate for sports-contract litigation (TikTok docket).

Other gaps remain. The complete current appellate rehearing and mandate history was not verified, and the identified petitions do not establish that no other qualifying vehicle can emerge. Public docket information also cannot rule out unposted correspondence. Additional appellate records, accepted replies or waivers, and actual conference distributions would narrow those uncertainties. They leave room for an upset without changing the saved forecast.