
Will there be 35 to 49 West Nile neuroinvasive disease cases among NYC residents in 2026?
8 of 11 top Polymarket traders hold No (73%) · No at 76¢ · $3K held · ends Apr 1, 2027
⚖️
Neutral
No
11
No 73%
2 arb excluded
$3.0K
$404.38
52.6¢ → 75.9¢
+44% since entry · 8 traders
Research grade
NeutralNo at 76%
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
8 of 11 top traders (73%)2 arbitrage traders dimmed3 hold an outcome priced under 50%9 small positions dimmed (<$100 invested)
Outcome Probabilities
Smart Money Breakdown by Outcome
Signal Intelligence
Momentum
Flat
+0 pts consensus
Breadth
8 traders
Top 2 hold 96%
Freshness
Late
754h old
Flip Quality
Clean
0 consensus flips
73% of non-arb traders are on No. Concentration is driven by the top two positions owning 96% of that side's value.
| Trader | Position | Invested | Value | PnL | Record |
|---|---|---|---|---|---|
XT xtxpleasecallme | Noavg 54.7¢ | $2.1K | $1.7K | +$202.1 | 35% 18159-34016 (52175) |
![]() IstarothARB<$100 | Noavg 80.6¢ | $912.18 | $475.35 | -$203.25 | 14% 461-2758 (3219) |
| └ No leg | Noavg 80.6¢ | $445.76 | $373.41 | -$72.61 | |
| └ Yes leg | Yesavg 39.4¢ | $164.5 | $101.94 | -$130.64 | |
DO donthackme | Noavg 40¢ | $297.47 | $367.83 | +$229.67 | 73% 12875-4800 (17675) |
![]() 2B9SARB<$100 | Noavg 59.2¢ | $342.45 | $328.12 | +$3.17 | 18% 4284-20059 (24343) |
| └ No leg | Noavg 59.2¢ | $224.14 | $255.63 | +$19.38 | |
| └ Yes leg | Yesavg 29.9¢ | $88.7 | $72.49 | -$16.21 | |
GO godblessme2026<$100 | Noavg 74¢ | $29.6 | $27.02 | -$2.58 | 42% 7028-9819 (16847) |
BU buoysCTR<$100 | Yesavg 17.2¢ | $17.87 | $25.32 | +$7.45 | 46% 726-841 (1567) |
ME merod<$100 | Noavg 81¢ | $25.88 | $21.58 | -$4.3 | 43% 3133-4188 (7321) |
PL plainfolder<$100 | Noavg 70.2¢ | $17.55 | $16.89 | -$0.66 | 31% 3488-7778 (11266) |
QW qwen300.fund<$100 | Noavg 42¢ | $8.4 | $13.51 | +$5.11 | 59% 11839-8177 (20016) |
EL Elias.ThornwellCTR<$100 | Yesavg 37.1¢ | $18.73 | $12.33 | -$6.4 | 77% 12312-3779 (16091) |
GH ghorrock<$100 | Noavg 84.1¢ | $21.06 | $6.32 | -$2.35 | 58% 19471-14317 (33788) |
CB Cb94C437EA5e6f088c6c0C143c592ab8EFBed<$100 | Noavg 79.8¢ | $6.68 | $6.02 | -$0.66 | 53% 8228-7325 (15553) |
0X 0xa169f83d28ad1ce5a14cc1c49796b547ece21b73CTR<$100 | Yesavg 48¢ | $60.22 | $2.01 | -$23 | 40% 285-429 (714) |
Invested
$2,123.28
Value
$1.7K
PnL
+$202.1
Record
35%
18159-34016 (52175)
IstarothARB<$100Invested
$912.18
Value
$475.35
PnL
-$203.25
Record
14%
461-2758 (3219)
Both legs:
Invested
$297.47
Value
$367.83
PnL
+$229.67
Record
73%
12875-4800 (17675)
2B9SARB<$100Invested
$342.45
Value
$328.12
PnL
+$3.17
Record
18%
4284-20059 (24343)
Both legs:
Invested
$29.6
Value
$27.02
PnL
-$2.58
Record
42%
7028-9819 (16847)
Invested
$17.87
Value
$25.32
PnL
+$7.45
Record
46%
726-841 (1567)
Invested
$25.88
Value
$21.58
PnL
-$4.3
Record
43%
3133-4188 (7321)
Invested
$17.55
Value
$16.89
PnL
-$0.66
Record
31%
3488-7778 (11266)
Invested
$8.4
Value
$13.51
PnL
+$5.11
Record
59%
11839-8177 (20016)
Invested
$18.73
Value
$12.33
PnL
-$6.4
Record
77%
12312-3779 (16091)
Invested
$21.06
Value
$6.32
PnL
-$2.35
Record
58%
19471-14317 (33788)
Invested
$6.68
Value
$6.02
PnL
-$0.66
Record
53%
8228-7325 (15553)
Invested
$60.22
Value
$2.01
PnL
-$23
Record
40%
285-429 (714)
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EV Calculator
Consensus % is how many tracked traders hold a side, not a win probability.
75.9¢ price + 1.0¢ spread + 0.9¢ 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.
Market Info
Traders in this Market
xtxpleasecallme
No — $1.7K

Istaroth
ARBArbitrage — excluded
donthackme
No — $367.83

2B9S
ARBArbitrage — excluded
godblessme2026
No — $27.02
buoys
CTRYes — $25.32
merod
No — $21.58
plainfolder
No — $16.89
qwen300.fund
No — $13.51
Elias.Thornwell
CTRYes — $12.33