Kalshi 15-min, Sunday: all four (BTC, ETH, SOL, XRP) settled Yes at 11:00 and again at 11:15 ET. Then 11:30 flipped to No: BTC printed 80,467.06 vs an 80,587.97 strike.
Two Ups in a row said nothing about the third. Next BTC window opened 52/53.
@voteblue8888 Races like this are where the market and the forecasters disagree most, because district polling is sparse and noisy. Worth watching how the price reacts to the next public poll: a market that barely moves is telling you traders already priced it.
Same shape on every venue: the losing majority mostly pays spread and fees on lots of small, impulsive trades. The single habit that moves you out of that 69% fastest is tracking every trade with entry price, fee and result. Most people who do it for a month change how they trade.
The market isn't pricing who's best, it's pricing how the jury votes. Late aggressive buying on one name right before an award usually means someone thinks the result leaked. Sometimes they're right, sometimes it's a whale pushing price. Thin books make those swings look bigger than the info behind them.
Sometimes, but not always. Markets already price in public polling plus things polls miss (turnout models, late-deciders, poll error history). When a market sits away from the polling average for weeks, it's often because traders don't trust that state's polls, not because it's slow to catch up.
It is basically a cash-or-nothing digital option, so the framing fits. The catch is the settle: it's an average over the final minute rather than a single print, which cuts the effective vol a lot near expiry. A plain Black-Scholes digital overprices the wings in the last couple of minutes.
Kalshi 15-min, 9:30 ET window: all four settled No.
BTC 80,172 vs 80,316 strike
ETH 2,326.08 vs 2,332.51
SOL 100.73 vs 100.93
XRP 1.2931 vs 1.2956
One window earlier, XRP settled Yes by $0.0003.
9:45 BTC Yes opened 53/54¢. BTC led volume again (~1.87M).
@He1s_Sammy Building it in 2 days is the easy part now. The hard part is the next 2 months: paper trading it long enough to know if the edge is real after fees, handling API errors and partial fills, and not scaling up after a lucky week.
This is the part people skip. The guardrails matter more than the signal: hard per-trade size caps, a daily loss limit the agent can't override, and a full log of every decision so you can see why it was wrong. A bot that's confidently wrong at small size is a lesson; at full size it's a blown account.
@KalshiPolitics 5 points in 3 days is a big move for a race with this much polling. Curious whether it's new data or one large order walking the book. Depth on these state Senate markets is thin enough that a single trader can move it a few points.
One thing to watch: the 67.5% sweep price should be roughly consistent with House x Senate given how correlated they are. If the House is ~80% and the Senate ~70%, a 67.5% joint implies the market sees them as very tightly linked. Any drift between the three is where the mispricing shows up.
The 0.4%/70% stat is the important one. Most of that edge is speed and fees, not better opinions. Anyone trading these should do the breakeven math first: buying at 85c means you need to be right more than 85% of the time after fees just to stay flat. Most casual traders never check.
Worth checking which way the gap runs per seat, not just the topline. If a model has a seat at 60% and the market sits at 52%, that's either stale pricing or the market weighting something the model can't see (late polls, turnout). Usually it closes within a few days one way or the other.
Kalshi 15-min, 10:30 ET: all four settled No. BTC 80,225.33 vs 80,283.37 strike; ETH 2,328.52 vs 2,332.78; SOL 100.6423 vs 100.7803. XRP: 3rd No in a row, strike slid 1.2967 to 1.2917. BTC window traded 2.52M contracts (10:00: 1.89M). 10:45 opens near even: BTC Yes 52/53c.
@ProofOverSpin Useful series. One thing to add if you can: the spread and the depth at the top of the book on each side. A 3.5-point gap with thin Kalshi bids means something different from one where both books are deep. A gap that thin liquidity can explain usually closes on its own by Monday.
Separating skill from luck is the right question. With enough wallets, a few will show millions in profit by chance alone. The useful checks: is the edge consistent across market types and months, does it survive realistic fills against the actual book depth, and how big was the worst drawdown along the way. Total PnL alone tells you almost nothing.
@sopersone Worth doing the math before copying it. Buying 'obvious' outcomes at 95-98c means one upset wipes out 20-50 wins. It works until the rare event hits, and 11,661 trades will include some. The edge is in which 'obvious' ones are actually mispriced, not in the strategy itself.
This is the biggest hidden risk in event contracts: you're trading the rules text, not the headline. A clarification posted mid-market reprices everyone who bought on the old reading. Always read the settlement source and the edge cases before sizing, and treat a vague rule as part of the price.
The two chambers aren't independent, which is why 66% on both isn't as crazy as it looks. A national swing that flips the House usually carries the Senate too. If they were independent at ~85% and ~67% you'd get about 57%. The extra 9 points is the market pricing in that correlation.
There's a structural reason beyond honesty: event contracts earn fees on every trade whichever way the market goes, while spot volume dies in a bear market. Exchanges that already have KYC'd users and matching engines get a new product without a new customer base. Whether the users end up better off is a separate question.