Kalshi’s order book heads into the week of October 20, 2026 with unusually broad action, as traders digest a near-miss Senate special election, fresh signals from Fed officials, and the AI capex debate that keeps leaking into both equity and prediction markets. Below is PredictWire’s weekly roundup of the contracts moving the most volume, the odds we’re watching closely, and the setups where the market may be mispriced.
Political Markets: Senate Control Edges Toward a Coin Flip
The headline contract on Kalshi this week is Senate control after the 2026 midterms. Odds of Republicans retaining the Senate have slipped from 61% a week ago to 54%, with the Democratic path pricing at 45% (and roughly 1% for a 50-50 tie). The swing was concentrated in two races: Ohio tightened after a late-week polling release, and Pennsylvania saw the GOP candidate’s probability drop seven points on a weak debate performance.
House control remains the lopsided market of the pair. Kalshi has Republicans holding the chamber at 68%, essentially flat on the week. Governor’s race aggregates are quieter, though the Michigan contract moved to 58% Democrat after new fundraising numbers.
What to watch next: a cluster of Senate debates runs October 22–24. Historical Kalshi data shows political debate windows generate 20–40% of a market’s weekly volume in a single 48-hour span, so expect the Senate contract to be volatile.
Fed Rate Decision: Traders Lean Dovish, But Not Unanimously
The November FOMC contract is one of the most-traded Kalshi markets right now. A 25 basis point cut is pricing at 67%, a hold at 29%, and a 50 bp cut at 4%. The dovish lean widened on Wednesday after a soft retail sales print, then partially unwound on Friday when two Fed governors delivered hawkish speeches in the same afternoon.
Prediction markets are now a touch more dovish than fed funds futures, which imply closer to a 60% chance of a cut. That gap is where arbitrage-minded traders tend to focus. We flagged a similar divergence in July, when Kalshi correctly front-ran the futures market by about 36 hours.
The CPI release on October 24 is the next catalyst. A print at or below 2.6% headline would likely push the cut probability above 75%; a surprise above 3.0% would almost certainly flip the market toward “hold.”
Crypto Contracts: Bitcoin Year-End Odds Pull Back
Kalshi’s Bitcoin year-end price contracts cooled this week after October’s rally stalled near $109,000. The probability that BTC closes 2026 above $120,000 has drifted from 38% to 31%, while the “above $100,000” contract held firm at 72%, suggesting traders see the current range as a floor rather than a ceiling.
Ethereum’s year-end markets are quieter but telling: the “ETH above $5,000 by December 31” contract trades at 44%, down from 51% last week, as rotation into AI-adjacent equities pulled attention away from crypto. The small but active “spot ETF inflow exceeds $2B in Q4” market sits at 58%.
Sports and Economy: Quieter, But Watch the Jobs Market
Sports contracts on Kalshi had a predictable week, with NFL game lines moving in step with mainstream sportsbooks. More interesting is the “US unemployment rate above 4.5% in November” market, which climbed from 24% to 33% on the back of two weaker jobless claims reports. If that trend continues, expect Fed cut odds (above) to tighten further toward 75%+.
Volume leaders this week on Kalshi, by our tracking: Senate control, November FOMC, Bitcoin year-end price, House control, and the November CPI contract, in roughly that order.
Where to Trade
If you want direct exposure to any of these contracts, Kalshi remains the deepest US-regulated venue for political, economic, and macro markets. For crypto-native contracts and some overlapping political markets with different pricing, Polymarket is worth comparing side by side. Prices and liquidity differ meaningfully between the two, and the arbitrage opportunities we flagged above only exist because of that gap.
For a full breakdown of how the major platforms stack up on fees, liquidity, and contract selection, see our best prediction markets rankings.