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Smart money holds the underdog side

Most tracked traders hold Bulls, while the market favors Celtics (58%). 2 of 3 traders hold an outcome priced under 50%.

Spread: Celtics (-11.5)

2 of 3 top Polymarket traders hold Bulls (67%) · Bulls at 42¢ · $660 held · ended Oct 30

Celtics58¢Bulls42¢Ended Fri, Oct 30, 2026View on Polymarket
SIGNAL

⚠️

Avoid

Bulls

Consensus Traders

3

Bulls 67%

Total Value

$659.98

Combined PnL

$127.91

Smart Money Entry

32.6¢ → 42¢

+29% since entry · 2 traders

Research grade

AvoidBulls at 42%

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.
  • Side priced 30–50¢Full year, out of sample: 0.30–0.50 lost −4.8 % a trade (n 16,830, 95 % CI −6.6 to −3.1), worse than the plain consensus.

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

Bulls

2 of 3 top traders (67%)Underdog side (market favors Celtics 58%)2 hold an outcome priced under 50%1 small position dimmed (<$100 invested)

Market Activity
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Outcome Probabilities

Celtics58%
Bulls42%

Smart Money Breakdown by Outcome

Bulls2 traders
Total Value$626.5
Total Shares1,462
Combined PnL+$128.81
Celtics1 trader
Total Value$33.48
Total Shares36
Combined PnL-$0.9
Bulls — 67%Celtics — 33%

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EV Calculator

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

Break-even chance44.2%

42.0¢ price + 1.0¢ spread + 1.2¢ fee (Sports 5%). Win more often than this and the bet pays.

Expected Value—
Expected ROIenter your estimate
Max Profit
+$126.11
Max Loss
-$100.00
Shares
226.1

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
0xb9baee54...319363
Slug
nba-chi-bos-2026-10-30-spread-home-11pt5
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