
Will the highest temperature in Miami be between 86-87°F on October 31?
3 of 6 top Polymarket traders hold No (50%) · No at 65¢ · $716 held · ends Oct 31
⚖️
Neutral
No
6
No 50%
$716.42
$42.62
73.5¢ → 65¢
-12% since entry · 3 traders
Research grade
NeutralNo at 65%
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 %).
- Consensus under 60 %Every backtest started at 60 %+ of the holders; below that 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
3 of 6 top traders (50%)3 hold an outcome priced under 50%4 small positions dimmed (<$100 invested)
Outcome Probabilities
Smart Money Breakdown by Outcome
| Trader | Position | Invested | Value | PnL | Record |
|---|---|---|---|---|---|
![]() Istaroth | Noavg 72.8¢ | $361.67 | $386.98 | +$30.46 | 21% 292-1070 (1362) |
0X 0xeb1b3ef2729ab7be83e1337ec81f24467c7f87c0CTR | Yesavg 22.1¢ | $181.32 | $192.33 | +$11.01 | 51% 620-601 (1221) |
![]() balthazar<$100 | Noavg 75.4¢ | $90.41 | $94.69 | +$4.28 | 61% 20914-13310 (34224) |
HE hello.67CTR<$100 | Yesavg 23.8¢ | $28.3 | $25.01 | -$3.29 | 50% 1737-1720 (3457) |
![]() LornaPredicts<$100 | Noavg 79¢ | $15.8 | $15.8 | -$0 | 18% 523-2344 (2867) |
CB Cb94C437EA5e6f088c6c0C143c592ab8EFBedCTR<$100 | Yesavg 28¢ | $1.47 | $1.63 | +$0.16 | 53% 6451-5652 (12103) |
IstarothInvested
$361.67
Value
$386.98
PnL
+$30.46
Record
21%
292-1070 (1362)
Invested
$181.32
Value
$192.33
PnL
+$11.01
Record
51%
620-601 (1221)
balthazar<$100Invested
$90.41
Value
$94.69
PnL
+$4.28
Record
61%
20914-13310 (34224)
Invested
$28.3
Value
$25.01
PnL
-$3.29
Record
50%
1737-1720 (3457)
LornaPredicts<$100Invested
$15.8
Value
$15.8
PnL
-$0
Record
18%
523-2344 (2867)
Invested
$1.47
Value
$1.63
PnL
+$0.16
Record
53%
6451-5652 (12103)
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EV Calculator
Consensus % is how many tracked traders hold a side, not a win probability.
65.0¢ price + 1.0¢ spread + 1.1¢ 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.