Smart money holds the underdog side

Most tracked traders hold Under, while the market favors Over (57%). 2 of 4 traders hold an outcome priced under 50%.

Milwaukee Brewers vs. Tampa Bay Rays: O/U 5.5

2 of 4 top Polymarket traders hold Under (50%) · Under at 43¢ · $587 held · ends Oct 29

Over57¢Under43¢Ends Thu, Oct 29, 2026View on Polymarket

SIGNAL

⚖️

Neutral

Under

Consensus Traders

Under 50%

Total Value

$586.53

Combined PnL

-$2.36

Smart Money Entry

40.6¢ → 42.5¢

+5% since entry · 2 traders

Research grade

NeutralUnder at 43%

No measured edge, which here means a loss: the plain consensus (5+ holders, 60 %+, held to resolution) lost −3.0 % a trade after costs out of sample in the full-year test (n 86,296, 95 % CI −3.6 to −2.4 %).

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.
Consensus under 60 %Every backtest started at 60 %+ of the holders; below that nothing was measured.
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

Under

2 of 4 top traders (50%)Underdog side (market favors Over 57%)2 hold an outcome priced under 50%2 small positions dimmed (<$100 invested)

Market Activity

Outcome Probabilities

Over57%

Under43%

Smart Money Breakdown by Outcome

Under2 traders

Total Value$463.01

Total Shares1,158

Combined PnL-$7.47

Over2 traders

Total Value$123.52

Total Shares206

Combined PnL+$5.11

Under — 50%Over — 50%

Trader	Position	Invested	Value	PnL	Record
UP UpTheBluesCTR	Underavg 41.7¢	$375.47	$360.3	-$15.17	59% 44657-31054 (75711)
0X 0x5b624e3E0426F7AA2Ca57F7451fbcEa4b125D87f-1769796221989CTR	Underavg 37¢	$95	$102.71	+$7.7	53% 5507-4852 (10359)
0xheavy888<$100	Overavg 58¢	$62.06	$64.2	+$2.14	56% 6920-5536 (12456)
HO HomeRunHazard<$100	Overavg 57¢	$56.36	$59.32	+$2.97	54% 16879-14148 (31027)

UpTheBluesCTR

Under

Invested

$375.47

Value

$360.3

PnL

-$15.17

Record

59%

44657-31054 (75711)

0x5b624e3E0426F7AA2Ca57F7451fbcEa4b125D87f-1769796221989CTR

Under

Invested

$95

Value

$102.71

PnL

+$7.7

Record

53%

5507-4852 (10359)

0xheavy888<$100

Over

Invested

$62.06

Value

$64.2

PnL

+$2.14

Record

56%

6920-5536 (12456)

HomeRunHazard<$100

Over

Invested

$56.36

Value

$59.32

PnL

+$2.97

Record

54%

16879-14148 (31027)

Research grade

NeutralUnder at 43%

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.
Consensus under 60 %Every backtest started at 60 %+ of the holders; below that nothing was measured.
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.

Smart Money Signal

Under

2 of 4 top traders (50%)Underdog side (market favors Over 57%)2 hold an outcome priced under 50%2 small positions dimmed (<$100 invested)

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EV Calculator

Your estimated chance that Under wins (%)

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

Stake (USDC)

Break-even chance44.7%

42.5¢ 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

+$123.57

Max Loss

-$100.00

223.6

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.