The October 2026 shutdown didn't happen. Congress passed and the president signed a continuing resolution in early September that funds the government through December 11, 2026, and Kalshi's "shutdown by October 1" contract resolved No, after peaking at 35% in late July and falling to about 4% by September 1. The next contracts are about December 11. The thing to understand about these markets is how precisely they're defined: a lapse at a stated time on the deadline date, nothing else.
What happened in October
| Date | Event | Kalshi price (shutdown by Oct 1) |
|---|---|---|
| Late July 2026 | No CR text; Senate leaves for recess | 35% peak |
| Late August | Leadership agrees a clean extension | Falls into teens |
| Sept 1 | Deal effectively done | ~4% |
| Sept 2–3 | Continuing Appropriations and Extensions Act, 2027 signed; funding through Dec 11 | Near 0 |
| Oct 1, 10 a.m. ET | No lapse | Resolved No |
About $193,000 traded on the Kalshi contract. Polymarket ran a parallel October market.
How the contracts are defined
A Kalshi shutdown contract asks whether there's a lapse in appropriations for some federal agencies at a specific moment (10 a.m. ET on the deadline date, in the October version). A CR signed at 11:59 p.m. the night before makes it No. A one-day lapse that's fixed by 9 a.m. is also No. The strictness is the point: it removes arguments about what "shutdown" means. Polymarket's contracts use similar language; the resolution time and the definition of "lapse" are the two things to read.
December 11
The current CR expires December 11, 2026, five weeks after the midterms, in a lame-duck session. That's historically a setting for brinkmanship, which is why outside forecasters put the risk around 24% in mid-October. The exchange contracts for December are the live number; expect them to track whether a full-year appropriations deal or another CR is on the table by Thanksgiving.
Trading it
It's a politics/economics contract: 4% rate on Polymarket, 7% on Kalshi for takers, free for makers. Available in all states except where Kalshi's politics boards are blocked (Washington, Nevada). Volume is modest compared with sports, so use limit orders.
Sources: Lines.com Kalshi shutdown tracker (Sept 30/Oct 2026); the enacted continuing resolution. Prices dated; not a recommendation.