Smart money holds the underdog side

Most tracked traders hold Under, while the market favors Over (76%). 4 of 8 traders hold an outcome priced under 50%.

Historically, consensus on sides priced under 40¢ lost money after costs.

Aston Villa FC vs. Fulham FC: O/U 1.5

4 of 8 top Polymarket traders hold Under (50%) · Under at 25¢ · $1K held · ended Oct 31

Over76¢Under24¢Ended Sat, Oct 31, 2026View on Polymarket

SIGNAL

⚠️

Avoid

Under

Consensus Traders

Under 50%

1 arb excluded

Total Value

$1.0K

Combined PnL

-$188.41

Smart Money Entry

27.8¢ → 24.5¢

-12% since entry · 4 traders

Research grade

AvoidUnder at 25%

Matches a pattern that lost clearly more than the plain consensus in our tests.

Consensus side under 30¢Full year, out of sample: 0.05–0.30 lost −8.1 % a trade (n 11,568), under 0.20 −20.5 % (n 3,615). Oct 22 backtest: −29.5 % (n 1,625). The strongest effect in every test.
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.

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

4 of 8 top traders (50%)Underdog side (market favors Over 76%)1 arbitrage trader dimmed4 hold an outcome priced under 50%4 small positions dimmed (<$100 invested)

Market Activity

Outcome Probabilities

Over76%

Under25%

Smart Money Breakdown by Outcome

Under4 traders

Total Value$594.05

Total Shares2,755

Combined PnL-$172.08

Over4 traders

Total Value$370.91

Total Shares438

Combined PnL-$16.33

Under — 50%Over — 50%

Trader	Position	Invested	Value	PnL	Record
UP UpTheBluesCTR	Underavg 23.8¢	$344.78	$340.28	-$4.5	59% 45969-32302 (78271)
SN SnakeBall	Overavg 82¢	$231.77	$222.1	-$9.67	50% 33488-33047 (66535)
RN1CTR	Underavg 37.9¢	$318.1	$146.86	-$171.24	54% 56681-48879 (105560)
HE hedgevaultmainnet1	Overavg 79.9¢	$166.65	$108.66	-$6.71	53% 2197-1937 (4134)
GO GoalLineGhostCTR<$100	Underavg 20¢	$73.64	$86.68	+$13.04	50% 25208-24935 (50143)
CA CannaeARB<$100	Overavg 79¢	$78.29	$79.82	+$1.18	53% 15980-14158 (30138)
└ Over leg	Overavg 79¢	$55.89	$55.19	-$1.06
└ Under leg	Underavg 20¢	$22.4	$24.63	+$2.24
LU LuckyLoo<$100	Overavg 80¢	$32	$32.2	+$0.2	49% 12681-13099 (25780)
TO topdogbigboiCTR<$100	Underavg 30¢	$29.6	$20.23	-$9.37	49% 8081-8480 (16561)
SE sentrio<$100	Overavg 79¢	$7.95	$7.95	-$0.15	50% 24924-24614 (49538)

UpTheBluesCTR

Under

Invested

$344.78

Value

$340.28

PnL

-$4.5

Record

59%

45969-32302 (78271)

SnakeBall

Over

Invested

$231.77

Value

$222.1

PnL

-$9.67

Record

50%

33488-33047 (66535)

RN1CTR

Under

Invested

$318.1

Value

$146.86

PnL

-$171.24

Record

54%

56681-48879 (105560)

hedgevaultmainnet1

Over

Invested

$166.65

Value

$108.66

PnL

-$6.71

Record

53%

2197-1937 (4134)

GoalLineGhostCTR<$100

Under

Invested

$73.64

Value

$86.68

PnL

+$13.04

Record

50%

25208-24935 (50143)

CannaeARB<$100

Over

Invested

$78.29

Value

$79.82

PnL

+$1.18

Record

53%

15980-14158 (30138)

Both legs:

Invested

$32

Value

$32.2

PnL

+$0.2

Record

49%

12681-13099 (25780)

topdogbigboiCTR<$100

Under

Invested

$29.6

Value

$20.23

PnL

-$9.37

Record

49%

8081-8480 (16561)

sentrio<$100

Over

Invested

$7.95

Value

$7.95

PnL

-$0.15

Record

50%

24924-24614 (49538)

Research grade

AvoidUnder at 25%

Matches a pattern that lost clearly more than the plain consensus in our tests.

Consensus side under 30¢Full year, out of sample: 0.05–0.30 lost −8.1 % a trade (n 11,568), under 0.20 −20.5 % (n 3,615). Oct 22 backtest: −29.5 % (n 1,625). The strongest effect in every test.
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.

Smart Money Signal

Under

4 of 8 top traders (50%)Underdog side (market favors Over 76%)1 arbitrage trader dimmed4 hold an outcome priced under 50%4 small positions dimmed (<$100 invested)

Chat

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 chance26.4%

24.5¢ 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

+$278.07

Max Loss

-$100.00

378.1

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.