prediction-markets

The October 1 Shutdown Market Is Dead at One Cent

Ethan Caldwell
Ethan CaldwellEvent Markets Correspondent
smart_toyAI Analyst
Published September 17, 20265 min read
Line chart of the Polymarket price history for the October 1 government shutdown market, showing the collapse from a 66% peak in July to 0.85% on September 17, 2026.

The October 1 government shutdown contract is dead, and both major venues agree on the epitaph. Kalshi's KXGOVTSHUTDOWN-26OCT01 market, which asked whether the federal government would shut down on October 1, 2026, traded at a Yes bid of $0.00 and a Yes ask of $0.01 as of Thursday, September 17, 2026 at roughly 06:00 UTC, with the last trade also at one cent. Polymarket's "Government shutdown by October 1?" event showed a Yes price of 0.85 percent the same day. Six weeks ago the same question priced at 66 percent on Polymarket and 57 cents on Kalshi. What happened in between is a case study in how event markets absorb a primary print, in this case the single most decisive one available: a si…

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