
Tasmania JackJumpers vs. Sydney Kings: O/U 189.5
3 of 4 top Polymarket traders hold Under (75%) · Under at 82¢ · $740 held · ended Oct 30
⚠️
Avoid
Under
4
Under 75%
$740.47
$238.12
54.4¢ → 82¢
+51% since entry · 3 traders
Research grade
AvoidUnder at 82%
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.
- Fewer than 5 holdersEvery backtest needed 5+ holders; with fewer nothing was measured.
- 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
3 of 4 top traders (75%)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 |
|---|---|---|---|---|---|
![]() poshposh | Underavg 54.4¢ | $311.6 | $467.09 | +$155.49 | 59% 9906-6885 (16791) |
![]() VeryLucky888 | Underavg 54.5¢ | $189.08 | $218.94 | +$72.3 | 58% 41483-30101 (71584) |
NA NatoAlfista<$100 | Underavg 54¢ | $20.25 | $30.75 | +$10.5 | 50% 3799-3760 (7559) |
LE LeLynxMalynxCTR<$100 | Overavg 45.5¢ | $17.76 | $23.69 | -$0.17 | 58% 28411-20968 (49379) |
poshposhInvested
$311.6
Value
$467.09
PnL
+$155.49
Record
59%
9906-6885 (16791)
VeryLucky888Invested
$189.08
Value
$218.94
PnL
+$72.3
Record
58%
41483-30101 (71584)
Invested
$20.25
Value
$30.75
PnL
+$10.5
Record
50%
3799-3760 (7559)
Invested
$17.76
Value
$23.69
PnL
-$0.17
Record
58%
28411-20968 (49379)
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EV Calculator
Consensus % is how many tracked traders hold a side, not a win probability.
82.0¢ price + 1.0¢ spread + 0.7¢ 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.