
Spread: Pistons (-6.5)
3 of 5 top Polymarket traders hold Pistons (60%) · Pistons at 55¢ · $3K held · ends Oct 30
⚠️
Avoid
Pistons
5
Pistons 60%
$2.8K
$23.75
55¢ → 54.5¢
-1% since entry · 3 traders
Research grade
AvoidPistons at 55%
Matches a pattern that lost clearly more than the plain consensus in our tests.
- BasketballFull year, out of sample: basketball lost −4.8 % a trade (n 1,747, 95 % CI −9.2 to +0.3); Oct 22 backtest: −12.0 % and −9.2 % in its two windows.
- Spread or totalOct 22 backtest: spreads and totals −14.5 % a trade in spring (95 % CI −27 to −1), +1.5 % in October: no edge.
- Side priced 50–60¢Full year, out of sample: 0.50–0.70 lost −2.9 % a trade (n 23,546, 95 % CI −3.9 to −1.9).
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 5 top traders (60%)2 hold an outcome priced under 50%1 small position dimmed (<$100 invested)
Outcome Probabilities
Smart Money Breakdown by Outcome
| Trader | Position | Invested | Value | PnL | Record |
|---|---|---|---|---|---|
QW QWUERHAIUKSJNFSNCF | Pistonsavg 55¢ | $1.3K | $1.3K | +$0 | 53% 383-337 (720) |
HO HomeRunHazardCTR | Netsavg 45¢ | $1.2K | $1.2K | +$26.57 | 54% 17100-14316 (31416) |
HE Herdonia | Pistonsavg 54.7¢ | $150.61 | $148.73 | -$1.88 | 54% 3290-2834 (6124) |
38 38791873984189 | Pistonsavg 55¢ | $139.7 | $138.43 | -$1.27 | 46% 7844-9262 (17106) |
LE LeLynxMalynxCTR<$100 | Netsavg 45¢ | $14.85 | $15.18 | +$0.33 | 58% 28383-20951 (49334) |
Invested
$1,319.99
Value
$1.3K
PnL
+$0
Record
53%
383-337 (720)
Invested
$1,195.71
Value
$1.2K
PnL
+$26.57
Record
54%
17100-14316 (31416)
Invested
$150.61
Value
$148.73
PnL
-$1.88
Record
54%
3290-2834 (6124)
Invested
$139.7
Value
$138.43
PnL
-$1.27
Record
46%
7844-9262 (17106)
Invested
$14.85
Value
$15.18
PnL
+$0.33
Record
58%
28383-20951 (49334)
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EV Calculator
Consensus % is how many tracked traders hold a side, not a win probability.
54.5¢ price + 1.0¢ spread + 1.2¢ fee (Sports 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.