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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

Yes24¢No76¢Ends Thu, Apr 1, 2027View on Polymarket
SIGNAL

⚖️

Neutral

No

Consensus Traders

11

No 73%

2 arb excluded

Total Value

$3.0K

Combined PnL

$404.38

Smart Money Entry

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

No

8 of 11 top traders (73%)2 arbitrage traders dimmed3 hold an outcome priced under 50%9 small positions dimmed (<$100 invested)

Market Activity

Outcome Probabilities

Yes24%
No76%

Smart Money Breakdown by Outcome

No8 traders
Total Value$2.1K
Total Shares2,775
Combined PnL+$426.33
Yes3 traders
Total Value$39.67
Total Shares163
Combined PnL-$21.95
No — 73%Yes — 27%

Signal Intelligence

Momentum

Flat

+0 pts consensus

Breadth

8 traders

Top 2 hold 96%

Freshness

Late

754h old

Flip Quality

Clean

0 consensus flips

Breadth vs concentrationCrowded

73% of non-arb traders are on No. Concentration is driven by the top two positions owning 96% of that side's value.

Cohort consensusHand-picked vs top 1000 · whales, sharps, snipers, contrarians
whaleNo 100% · 2
Aligned
sharpYes 100% · 1
Diverging
ctrNo 67% · 3
Aligned
Hand-pickedNo 100% · 1
Aligned
Top 1000No 73% · 11
Aligned

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EV Calculator

Consensus % is how many tracked traders hold a side, not a win probability.

Break-even chance77.8%

75.9¢ price + 1.0¢ spread + 0.9¢ fee (Other / General 5%). Win more often than this and the bet pays.

Expected Value—
Expected ROIenter your estimate
Max Profit
+$28.55
Max Loss
-$100.00
Shares
128.6

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

Condition ID
0x050e3ec9...8ed07b
Slug
west-nile-neuroinvasive-cases-nyc-2026-35-to-49-20260820104404
Trade on Polymarket