
Will the highest temperature in Beijing be 13°C on October 28?
4 of 5 top Polymarket traders hold No (80%) · No at 97¢ · $266 held · ends Oct 28
⚖️
Neutral
No
5
No 80%
$266.03
-$1.7
98¢ → 97.4¢
-1% since entry · 4 traders
Research grade
NeutralNo at 97%
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 %).
- Side priced over 95¢Full year, out of sample: 0.90–0.95 −0.2 % a trade (n 12,989, 95 % CI −0.6 to +0.3); above 95¢ little is left to win and the tests stop at 0.95.
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%4 small positions dimmed (<$100 invested)
Outcome Probabilities
Smart Money Breakdown by Outcome
| Trader | Position | Invested | Value | PnL | Record |
|---|---|---|---|---|---|
![]() balthazar | Noavg 99.3¢ | $119.12 | $117.86 | -$1.26 | 61% 20619-13064 (33683) |
24 241532532432<$100 | Noavg 96.7¢ | $88.9 | $89.51 | +$0.61 | 61% 1566-1014 (2580) |
GH ghorrock<$100 | Noavg 97.1¢ | $51.96 | $52.1 | +$0.14 | 57% 13006-9921 (22927) |
XT xtxpleasecallme<$100 | Noavg 99¢ | $4.98 | $4.94 | -$0.04 | 35% 14744-26906 (41650) |
HE hello.67CTR<$100 | Yesavg 2.9¢ | $2.77 | $1.6 | -$1.16 | 50% 1640-1625 (3265) |
balthazarInvested
$119.12
Value
$117.86
PnL
-$1.26
Record
61%
20619-13064 (33683)
Invested
$88.9
Value
$89.51
PnL
+$0.61
Record
61%
1566-1014 (2580)
Invested
$51.96
Value
$52.1
PnL
+$0.14
Record
57%
13006-9921 (22927)
Invested
$4.98
Value
$4.94
PnL
-$0.04
Record
35%
14744-26906 (41650)
Invested
$2.77
Value
$1.6
PnL
-$1.16
Record
50%
1640-1625 (3265)
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EV Calculator
Consensus % is how many tracked traders hold a side, not a win probability.
97.4¢ price + 1.0¢ spread + 0.1¢ 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.