
Will the highest temperature in Miami be between 86-87°F on October 30?
4 of 5 top Polymarket traders hold Yes (80%) · Yes at 70¢ · $918 held · ends Oct 30
⚖️
Neutral
Yes
5
Yes 80%
$917.78
$82.46
54.8¢ → 69.5¢
+27% since entry · 4 traders
Research grade
NeutralYes at 70%
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 %).
- 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
4 of 5 top traders (80%)1 holds an outcome priced under 50%2 small positions dimmed (<$100 invested)
Outcome Probabilities
Smart Money Breakdown by Outcome
| Trader | Position | Invested | Value | PnL | Record |
|---|---|---|---|---|---|
0X 0x65f7226a82e093e5115e47ec2f4f7e733cd28b98 | Yesavg 49.8¢ | $304.12 | $394.05 | +$89.93 | 47% 631-718 (1349) |
![]() Istaroth | Yesavg 54.1¢ | $279.88 | $272.01 | -$3.23 | 21% 295-1102 (1397) |
24 241532532432 | Yesavg 66.7¢ | $139.97 | $141.75 | +$1.78 | 59% 1723-1189 (2912) |
HE hello.67<$100 | Yesavg 62.2¢ | $61.74 | $64.05 | +$2.31 | 50% 1752-1734 (3486) |
![]() balthazarCTR<$100 | Noavg 41.9¢ | $54.25 | $45.93 | -$8.33 | 61% 20945-13330 (34275) |
Invested
$304.12
Value
$394.05
PnL
+$89.93
Record
47%
631-718 (1349)
IstarothInvested
$279.88
Value
$272.01
PnL
-$3.23
Record
21%
295-1102 (1397)
Invested
$139.97
Value
$141.75
PnL
+$1.78
Record
59%
1723-1189 (2912)
Invested
$61.74
Value
$64.05
PnL
+$2.31
Record
50%
1752-1734 (3486)
balthazarCTR<$100Invested
$54.25
Value
$45.93
PnL
-$8.33
Record
61%
20945-13330 (34275)
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EV Calculator
Consensus % is how many tracked traders hold a side, not a win probability.
69.5¢ 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.