Will the highest temperature in Helsinki be 8°C on November 8?
2 of 3 top Polymarket traders hold No (67%) · No at 72¢ · $75 held · ends Nov 8
⚖️
Neutral
No
3
No 67%
$74.78
-$16.47
Research grade
NeutralNo at 72%
No measured edge, which here means a loss: the plain consensus (5+ holders, 60 %+, held to resolution) lost −3.0 % a trade after costs out of sample in the full-year test (n 86,296, 95 % CI −3.6 to −2.4 %).
- Fewer than 5 holdersEvery backtest needed 5+ holders; with fewer nothing was measured.
- Favourite (60–95¢)Full year, out of sample: 0.70–0.90 lost −0.9 % a trade (n 26,050, 95 % CI −1.5 to −0.3): the least bad band, still a loss. The Oct 22 backtest's +0.4 % (n 4,327) was not confirmed.
The rules come from our Oct 22 2026 backtest (one entry per market, held to resolution, after a 1¢ half-spread and Polymarket's taker fees). Our full-year test without hindsight (Oct 26 2026) found none of them profitable out of sample, and the plain consensus lost −3.0 % a trade. The grade describes the market; it is not a forecast, not an edge and not advice.
Smart Money Signal
2 of 3 top traders (67%)1 holds an outcome priced under 50%3 small positions dimmed (<$100 invested)
Outcome Probabilities
Smart Money Breakdown by Outcome
| Trader | Position | Invested | Value | PnL | Record |
|---|---|---|---|---|---|
0X 0xeb1b3ef2729ab7be83e1337ec81f24467c7f87c0CTR<$100 | Yesavg 31.8¢ | $76.21 | $50.33 | -$25.89 | 40% 854-1296 (2150) |
 Istaroth<$100 | Noavg 76.4¢ | $25.74 | $23 | -$1.26 | 13% 550-3636 (4186) |
 balthazar<$100 | Noavg 71.1¢ | $22.76 | $1.44 | +$10.68 | 52% 31057-29024 (60081) |
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EV Calculator
Consensus % is how many tracked traders hold a side, not a win probability.
72.0¢ price + 1.0¢ spread + 1.0¢ fee (Other / General 5%). Win more often than this and the bet pays.
A market order pays the taker fee and crosses the spread (assumed 1.0¢); a limit order pays no fee but may not fill. The fee category is a guess from the title.