Prediction markets never actually close — contracts kept trading through Saturday and Sunday on Kalshi and Polymarket, and the probabilities moved in ways that matter for next week’s economic, political, and sports catalysts. Here is what the crowd priced over the weekend of October 17-18, 2026, in the five markets that drew the most capital.
Fed November Rate Decision: Cut Odds Hold Near 72%
The dominant macro contract heading into the weekend remained the November 4-5 FOMC decision. Kalshi’s “Fed cuts rates in November?” market closed Sunday at 72%, essentially unchanged from Friday’s 71% but notably below the 78% peak seen two weeks ago after the softer-than-expected September CPI print. Polymarket’s equivalent contract settled at 70%, with roughly $4.1 million in weekend volume — a reminder that even without a scheduled catalyst, position-sizing continues.
The split between a 25bp cut and a 50bp cut tightened over the weekend. Kalshi’s conditional market now shows:
- 25bp cut: 58% (up from 54% Friday)
- 50bp cut: 14% (down from 17%)
- Hold: 28% (flat)
Traders appear to be fading the larger-cut scenario after Friday’s hotter PPI print and comments from two regional Fed presidents suggesting a more measured path. Watch the October retail sales release on Thursday — a stronger number would further compress 50bp odds and could push the overall cut probability back into the mid-60s.
2026 Senate Control: Republicans Edge Back Over 50%
The headline political contract of the weekend was the 2026 Senate majority market. Kalshi’s “Republicans control Senate after 2026 election” settled Sunday at 52%, flipping back above even money after spending most of last week in the high 40s. Polymarket showed a near-identical 51%.
The move came largely from the Ohio and Pennsylvania individual-race contracts. The Pennsylvania Senate race, which had been priced as a true toss-up at 50-50 on Thursday, drifted to Republican 55% / Democrat 45% by Sunday night on momentum from a strong fundraising report and polling from a well-regarded in-state firm. Ohio’s incumbent-defense contract firmed to 63% Republican hold.
The House majority market remained more stable, with Democrats at 58% to flip control — essentially unchanged over the weekend. The divergence between Senate and House odds is one of the more interesting structural trades right now and reflects the particular geography of this cycle’s maps.
Bitcoin End-of-2026 Price: $120K Target Loses Ground
Crypto prediction markets saw real action over the weekend as spot BTC traded around $108,400. The key contracts settled as follows:
| Year-End 2026 BTC Target | Kalshi | Polymarket | Weekend Change |
|---|---|---|---|
| Above $100,000 | 74% | 72% | -2 pts |
| Above $110,000 | 48% | 46% | -4 pts |
| Above $120,000 | 22% | 19% | -6 pts |
| Above $130,000 | 9% | 7% | -3 pts |
The compression at the higher strikes is the story. With only about ten weeks left in the calendar year, the market is pricing in diminishing optionality on an aggressive year-end rally. Ethereum’s parallel contracts moved similarly: “ETH above $5,000 by year-end” slipped from 41% to 36% over the weekend.
NFL Week 7: Upset Lines Draw Volume
Sports prediction contracts on CFTC-approved event markets saw their typical weekend surge, with Week 7 NFL games pulling the heaviest flow. The three most-traded contracts:
- Chiefs to beat 49ers in Week 7: Kansas City closed at 61%, with sharp money arriving Saturday to push the number up from 57% Friday.
- Any 10+ point underdog wins in Week 7: 44%, essentially a coin flip and consistent with recent weeks where upsets have been plentiful.
- At least one game decided by exactly 3 points: 71% — one of the most reliably accurate recurring contracts, hitting roughly four weeks out of every five.
For a deeper look at how sports event contracts differ from traditional sportsbooks, see our best prediction markets rankings.
Geopolitical Contracts: Middle East Ceasefire Odds Jump
The surprise mover of the weekend was Kalshi’s “Middle East ceasefire extended through November 30” contract, which surged from 42% Friday to 59% Sunday evening on reporting that back-channel talks had produced a tentative framework. Polymarket’s analogous contract moved from 39% to 55%, with weekend volume above $800,000 — exceptional for a contract that typically trades under $100K per day.
Separately, the “Russia-Ukraine negotiations announced by December 31” market firmed to 31% from 27% on the week, though volume there was muted. These are the kinds of asymmetric contracts that reward traders willing to read primary-source wire reports rather than relying on consensus narratives.
What to Watch Monday
Three events are likely to move markets in the first 24 hours of the trading week:
- September housing starts (8:30 AM ET Tuesday): A soft print would reinforce the rate-cut consensus and could push November cut odds back above 75%.
- Earnings from a major regional bank Tuesday morning: Credit quality commentary will feed directly into the “US recession before Q3 2027” contract, currently at 29%.
- Any Fed-speak: Four voting FOMC members have scheduled remarks this week. The November cut contract is sensitive to any hawkish tone.
Where to Trade
Weekend liquidity on event contracts is thinner than weekday liquidity, which creates genuine spread opportunities for patient traders. The two regulated venues to trade these contracts in the US are:
- Kalshi — CFTC-regulated, deepest liquidity in US event contracts, best venue for economic and political markets.
- Polymarket — now with a US-regulated path, strong for crypto, geopolitical, and tail-risk contracts.
Compare fees, available markets, and account features in our updated prediction market rankings. The next weekend digest publishes Sunday, October 25 — subscribe to the PredictWire newsletter if you want it in your inbox before the Monday open.