5-minute crypto markets: when the crowd is right

Polymarket runs a new Up/Down market every five minutes for BTC, ETH, SOL and XRP. We record the order book and the spot price every five seconds for every window and score the crowd against the outcome. Everything below is measured, not modelled: exact-second snapshots, no look-ahead, taker fee included.

52,337 windows over 45.8 days (BTC 13088 · ETH 13082 · SOL 13083 · XRP 13084). Updated 2026-10-20 11:07Z. Refreshes hourly.

1. How the market resolves

The rule is the Chainlink 60-second TWAP at the end of the window against the start. Our spot proxy (Coinbase) agrees with the outcome in 92.4% of windows when we use the last-minute mean, and only 83.9% with the whole-window mean. The last minute decides; the other 8% is the gap between exchange feeds.

2. When the crowd is right

Share of windows where the side the order book favoured at second T was the final outcome. The favourite is locked (never flips again) at a median of 80s (75% of windows by 185s).

SecondAllBTCETHSOLXRP
30s64.8% (33892/52299)66.1%64.9%64.3%64.0%
60s68.8% (35965/52281)69.7%68.9%68.5%68.0%
120s75.5% (39231/51957)75.7%75.6%75.2%75.5%
180s81.8% (39599/48427)82.1%81.8%81.2%82.1%
210s84.9% (36144/42569)85.0%84.8%84.6%85.2%
240s87.1% (25888/29726)87.6%87.2%86.8%86.8%
255s88.0% (16164/18378)88.9%88.1%86.9%87.9%
270s88.2% (8363/9485)90.0%87.6%87.2%87.7%
285s88.1% (2846/3231)88.5%87.8%87.6%88.4%

3. Buying the favourite late: what it is worth

Rule: at second T buy the favourite at its ask if the ask is between 0.90 and 0.985, hold to resolution, sell the winner at 0.99. "Filtered" adds one condition: spot must be at least 5 bps away from the window's opening price in the favourite's direction. P&L is per $1 staked after the taker fee. One reversal costs the whole stake.

Entry secondTradesReversalsP&L / $1Filtered tradesReversalsP&L / $1
230s14636773-1.9%6523302-1.7%
240s12954736-2.5%4413224-2.3%
245s10742643-2.8%2840160-2.8%
250s9032506-2.4%188497-2.2%
252s7610407-2.2%137479-2.9%
255s7610407-2.2%137479-2.9%
260s6265378-2.9%89562-4.0%
270s4160270-3.4%38235-6.2%

By asset at 252s, filtered: BTC 164 trades / 11 rev / -4.0%  ETH 260 trades / 12 rev / -1.7%  SOL 433 trades / 21 rev / -1.9%  XRP 517 trades / 35 rev / -4.0%  

Read it honestly: before ~250s the rule loses money on every second; from 250s the sample is small and the edge is a percent or two per trade, which a single reversal per 50–70 trades erases. This is a measurement, not a recommendation.

4. Where reversals live

Candidates: windows where the favourite was priced ≥ 0.90 at 240s. Reversals: the other side won. 808 reversals in 18289 candidates.

By asset

BTC181 / 4371 (4.1%)
ETH180 / 4453 (4.0%)
SOL209 / 4568 (4.6%)
XRP238 / 4897 (4.9%)

By crowd confidence (favourite price)

0.90-0.93206 / 2072 (9.9%)
0.93-0.96289 / 3449 (8.4%)
0.96-0.99241 / 7443 (3.2%)
0.99-1.0172 / 5325 (1.4%)

By volatility of the window (bps / minute)

0-291 / 2302 (4.0%)
2-4236 / 5123 (4.6%)
4-6208 / 4418 (4.7%)
6-99273 / 6446 (4.2%)

Median volatility: reversals 4.6, wins 4.68.

5. How often the filtered rule fires (last 7 days, UTC hours)

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6. Latest windows

Window (UTC)AssetFavourite @240sPriceSpot vs open, bpsOutcomeCrowd
10-20 11:00ZBTC———Up—
10-20 11:00ZETH———Up—
10-20 11:00ZSOL———Up—
10-20 11:00ZXRP———Up—
10-20 10:55ZBTCUp0.79-0.8Upright
10-20 10:55ZETHUp0.91.9Upright
10-20 10:55ZSOLUp0.967.2Upright
10-20 10:55ZXRP———Up—
10-20 10:50ZBTCDown0.9977.1Downright
10-20 10:50ZETH———Down—
10-20 10:50ZSOLUp0.87-2.9Upright
10-20 10:50ZXRPDown0.987.7Downright
10-20 10:45ZBTCUp0.992.3Upright
10-20 10:45ZETH———Up—
10-20 10:45ZSOL———Up—
10-20 10:45ZXRPUp0.971.2Upright
10-20 10:40ZBTCDown0.911.8Upwrong
10-20 10:40ZETHDown0.972.8Downright
10-20 10:40ZSOLDown0.924.3Upwrong
10-20 10:40ZXRPDown0.9998.9Downright
10-20 10:35ZBTCDown0.790.8Downright
10-20 10:35ZETHUp0.55-0.4Upright
10-20 10:35ZSOLUp0.814.3Upright
10-20 10:35ZXRPDown0.51-0.4Downright
10-20 10:30ZBTC———Down—
10-20 10:30ZETH———Down—
10-20 10:30ZSOL———Down—
10-20 10:30ZXRPDown0.997.4Downright
10-20 10:25ZBTCUp0.998.7Upright
10-20 10:25ZETHUp0.965.9Upright
10-20 10:25ZSOLUp0.979.6Upright
10-20 10:25ZXRPUp0.9710.5Upright
10-20 10:20ZBTCDown0.96-0.1Downright
10-20 10:20ZETHDown0.991.9Downright
10-20 10:20ZSOL———Down—
10-20 10:20ZXRPDown0.995.4Downright
10-20 10:15ZBTCUp0.57-4.9Downwrong
10-20 10:15ZETHDown0.835.9Downright
10-20 10:15ZSOLDown0.668.6Downright
10-20 10:15ZXRPDown0.788.5Downright
10-20 10:10ZBTC———Up—
10-20 10:10ZETHUp0.820.8Upright
10-20 10:10ZSOLUp0.990Upright
10-20 10:10ZXRPDown0.993.1Downright
10-20 10:05ZBTCUp0.978.9Upright
10-20 10:05ZETH———Up—
10-20 10:05ZSOL———Up—
10-20 10:05ZXRPUp0.7118.2Upright

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