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Smart money holds the underdog side

Most tracked traders hold Celtics, while the market favors Bulls (53%). 3 of 5 traders hold an outcome priced under 50%.

Spread: Celtics (-15.5)

3 of 5 top Polymarket traders hold Celtics (60%) · Celtics at 48¢ · $2K held · ends Oct 30

Celtics48¢Bulls52¢Ends Fri, Oct 30, 2026View on Polymarket
SIGNAL

⚠️

Avoid

Celtics

Consensus Traders

5

Celtics 60%

1 arb excluded

Total Value

$2.3K

Combined PnL

-$7.54

Smart Money Entry

48¢ → 47.5¢

-1% since entry · 3 traders

Research grade

AvoidCeltics at 48%

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 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

Celtics

3 of 5 top traders (60%)Underdog side (market favors Bulls 53%)1 arbitrage trader dimmed3 hold an outcome priced under 50%1 small position dimmed (<$100 invested)

Market Activity
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Outcome Probabilities

Celtics48%
Bulls53%

Smart Money Breakdown by Outcome

Celtics3 traders
Total Value$1.4K
Total Shares2,838
Combined PnL-$7.79
Bulls2 traders
Total Value$584.01
Total Shares1,123
Combined PnL+$0.25
Celtics — 60%Bulls — 40%

Signal Intelligence

Momentum

Flat

+0 pts consensus

Breadth

3 traders

Top 2 hold 80%

Freshness

Fresh

0h old

Flip Quality

Clean

0 consensus flips

Breadth vs concentrationCrowded

60% of non-arb traders are on Celtics. Concentration is driven by the top two positions owning 80% of that side's value.

Cohort consensusHand-picked vs top 1000 · whales, sharps, snipers, contrarians
whaleCeltics 75% · 4
Aligned
sharpCeltics 100% · 1
Aligned
ctrCeltics 100% · 2
Aligned
Hand-pickedCeltics 100% · 1
Aligned
Top 1000Celtics 60% · 5
Aligned

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EV Calculator

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

Break-even chance49.7%

47.5¢ 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
+$101.01
Max Loss
-$100.00
Shares
201.0

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
0xc0f1fc1f...9bf958
Slug
nba-chi-bos-2026-10-30-spread-home-15pt5
Trade on Polymarket