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Grizzlies vs. Trail Blazers: O/U 239.5

3 of 5 top Polymarket traders hold Under (60%) · Under at 76¢ · $1K held · ended Oct 30

Over25¢Under75¢Ended Fri, Oct 30, 2026View on Polymarket
SIGNAL

⚠️

Avoid

Under

Consensus Traders

5

Under 60%

1 arb excluded

Total Value

$1.2K

Combined PnL

$180.26

Smart Money Entry

61¢ → 75.5¢

+24% since entry · 3 traders

Research grade

AvoidUnder at 76%

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.
  • 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

Under

3 of 5 top traders (60%)1 arbitrage trader dimmed2 hold an outcome priced under 50%3 small positions dimmed (<$100 invested)

Market Activity
Loading chart data…

Outcome Probabilities

Over25%
Under76%

Smart Money Breakdown by Outcome

Under3 traders
Total Value$651.56
Total Shares958
Combined PnL+$66.96
Over2 traders
Total Value$295.31
Total Shares941
Combined PnL+$113.3
Under — 60%Over — 40%

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EV Calculator

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

Break-even chance77.4%

75.5¢ price + 1.0¢ spread + 0.9¢ fee (Sports 5%). Win more often than this and the bet pays.

Expected Value—
Expected ROIenter your estimate
Max Profit
+$29.20
Max Loss
-$100.00
Shares
129.2

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
0x88983272...13b90f
Slug
nba-mem-por-2026-10-29-total-239pt5
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