Will there be 20 to 34 West Nile neuroinvasive disease cases among NYC residents in 2026?
4 of 5 top Polymarket traders hold Yes (80%) · Yes at 96¢ · $5K held · ends Apr 1, 2027
⚖️
Neutral
Yes
5
Yes 80%
$4.8K
$1.0K
68.3¢ → 95.5¢
+40% since entry · 4 traders
Research grade
NeutralYes at 96%
No measured edge either way. The plain consensus (5+ holders, 60 %+, held to resolution) lost −4.8 % a trade after costs (n 10,051, 95 % CI −6.5 to −3.1 %).
- Side priced over 95¢0.90–0.99 was −0.2 % a trade (n 4,210); above 95¢ little is left to win and the backtests' bands stop at 0.95.
Backtest of Oct 22 2026: one entry per market, held to resolution, after a 1¢ half-spread and Polymarket's taker fees. The grade never goes above “Research candidate”: no rule passed the multiple-testing check. It is not a forecast 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 |
|---|---|---|---|---|---|
![]() 0x56e777a0ac58b25be414f8f29866e99ad5737c0b | Yesavg 81.6¢ | $2.5K | $2.9K | +$361.61 | 71% 65-27 (92) |
SN SnapElectionAvoider | Yesavg 32.6¢ | $597.9 | $1.3K | +$689.38 | 52% 1004-922 (1926) |
![]() Istaroth | Yesavg 90.1¢ | $530.37 | $466.03 | -$44.53 | 49% 269-276 (545) |
![]() 2B9S<$100 | Yesavg 40.8¢ | $46.98 | $91.24 | +$44.25 | 18% 3382-15511 (18893) |
CB Cb94C437EA5e6f088c6c0C143c592ab8EFBedCTR<$100 | Noavg 20.1¢ | $14.29 | $1.72 | -$4.03 | 54% 4740-4091 (8831) |
0x56e777a0ac58b25be414f8f29866e99ad5737c0bInvested
$2,478.94
Value
$2.9K
PnL
+$361.61
Record
71%
65-27 (92)
Invested
$597.9
Value
$1.3K
PnL
+$689.38
Record
52%
1004-922 (1926)
IstarothInvested
$530.37
Value
$466.03
PnL
-$44.53
Record
49%
269-276 (545)
2B9S<$100Invested
$46.98
Value
$91.24
PnL
+$44.25
Record
18%
3382-15511 (18893)
Invested
$14.29
Value
$1.72
PnL
-$4.03
Record
54%
4740-4091 (8831)
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EV Calculator
Consensus % is how many tracked traders hold a side, not a win probability.
95.5¢ price + 1.0¢ spread + 0.2¢ 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.