Smart money holds the underdog side

Most tracked traders hold Under, while the market favors Over (51%). 3 of 8 traders hold an outcome priced under 50%.

Nets vs. Celtics: O/U 222.5

3 of 8 top Polymarket traders hold Under (38%) · Under at 50¢ · $86K held · ends Oct 27

Over51¢Under49¢Ends Tue, Oct 27, 2026View on Polymarket

SIGNAL

⚠️

Avoid

Under

Consensus Traders

Under 38%

3 arb excluded

Total Value

$86.2K

Combined PnL

-$127.13

Smart Money Entry

50.1¢ → 49.5¢

-1% since entry · 3 traders

Research grade

AvoidUnder at 50%

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.
Consensus under 60 %Every backtest started at 60 %+ of the holders; below that 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

3 of 8 top traders (38%)Underdog side (market favors Over 51%)3 arbitrage traders dimmed3 hold an outcome priced under 50%

Market Activity

Outcome Probabilities

Over51%

Under50%

Smart Money Breakdown by Outcome

Under3 traders

Total Value$49.8K

Total Shares99,656

Combined PnL-$219.84

Over5 traders

Total Value$24.5K

Total Shares49,023

Combined PnL+$92.71

Under — 38%Over — 62%

Signal Intelligence

Momentum

Flat

+0 pts consensus

Breadth

2 traders

Top 2 hold 100%

Freshness

Fresh

0h old

Flip Quality

Clean

0 consensus flips

Breadth vs concentrationCrowded

40% of non-arb traders are on Under. Concentration is driven by the top two positions owning 100% of that side's value.

Cohort consensusHand-picked vs top 1000 · whales, sharps, snipers, contrarians

whaleUnder 100% · 1

Aligned

ctrOver 75% · 4

Diverging

Top 1000Over 60% · 5

Diverging

Trader	Position	Invested	Value	PnL	Record
MO monkeymashingkeyboardCTR	Underavg 50¢	$42.5K	$42.5K	+$0	54% 568-482 (1050)
IA ianf2026	Overavg 49.8¢	$13.6K	$13.6K	+$52.5	47% 83-93 (176)
HO HomeRunHazardARB<$100	Underavg 51.2¢	$11.0K	$11.0K	-$73.34	54% 16738-14040 (30778)
└ Under leg	Underavg 51.2¢	$6.0K	$5.9K	-$136.17
└ Over leg	Overavg 49.4¢	$5.0K	$5.1K	+$62.83
FO Forecastication2	Overavg 50¢	$6.0K	$6.0K	+$0.21	50% 6745-6752 (13497)
IC ic4creamCTR	Underavg 51¢	$5.4K	$5.3K	-$159.84	59% 2599-1830 (4429)
FF ff3364	Overavg 50¢	$2.9K	$2.9K	+$0	50% 782-783 (1565)
0X 0xAbF543512f33E2D754ada028a689610139Cccfeb-1760974401494CTR	Underavg 51¢	$2.0K	$2.0K	-$60	54% 1249-1053 (2302)
PP ppku6298	Overavg 49¢	$1.5K	$1.5K	+$30	42% 65-91 (156)
RN1ARB<$100	Underavg 49.8¢	$870	$875	+$5	54% 55318-47360 (102678)
└ Under leg	Underavg 49.8¢	$497.5	$500	+$2.5
└ Over leg	Overavg 49.7¢	$372.5	$375	+$2.5
0X 0x443BCCe588E26763987e9Ae44b6b7845F09Fe8bB-1769536380439	Overavg 49.1¢	$543.5	$553.5	+$10	48% 336-359 (695)
LE LeLynxMalynxARB<$100	Underavg 51¢	$101.19	$101.51	+$0.32	58% 27869-20504 (48373)
└ Under leg	Underavg 51¢	$59.17	$58	-$1.17
└ Over leg	Overavg 48.3¢	$42.02	$43.51	+$1.49

monkeymashingkeyboardCTR

Under

Invested

$42,500

Value

$42.5K

PnL

+$0

Record

54%

568-482 (1050)

ianf2026

Over

Invested

$13,550.99

Value

$13.6K

PnL

+$52.5

Record

47%

83-93 (176)

HomeRunHazardARB<$100

Under

Invested

$11,041.68

Value

$11.0K

PnL

-$73.34

Record

54%

16738-14040 (30778)

Both legs:

Under$6,025.1851.2¢-$136.17

Over$5,016.5149.4¢+$62.83

Forecastication2

Over

Invested

$6,003.29

Value

$6.0K

PnL

+$0.21

Record

50%

6745-6752 (13497)

ic4creamCTR

Under

Invested

$5,434.56

Value

$5.3K

PnL

-$159.84

Record

59%

2599-1830 (4429)

ff3364

Over

Invested

$2,851

Value

$2.9K

PnL

+$0

Record

50%

782-783 (1565)

0xAbF543512f33E2D754ada028a689610139Cccfeb-1760974401494CTR

Under

Invested

$2,039.99

Value

$2.0K

PnL

-$60

Record

54%

1249-1053 (2302)

ppku6298

Over

Invested

$1,470

Value

$1.5K

PnL

+$30

Record

42%

65-91 (156)

RN1ARB<$100

Under

Invested

$870

Value

$875

PnL

+$5

Record

54%

55318-47360 (102678)

Both legs:

Under$497.549.8¢+$2.5

Over$372.549.7¢+$2.5

0x443BCCe588E26763987e9Ae44b6b7845F09Fe8bB-1769536380439

Over

Invested

$543.5

Value

$553.5

PnL

+$10

Record

48%

336-359 (695)

LeLynxMalynxARB<$100

Under

Invested

$101.19

Value

$101.51

PnL

+$0.32

Record

58%

27869-20504 (48373)

Both legs:

Under$59.1751¢-$1.17

Over$42.0248.3¢+$1.49

Research grade

AvoidUnder at 50%

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.
Consensus under 60 %Every backtest started at 60 %+ of the holders; below that 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

3 of 8 top traders (38%)Underdog side (market favors Over 51%)3 arbitrage traders dimmed3 hold an outcome priced under 50%

Signal Intelligence

Momentum

Flat

+0 pts consensus

Breadth

2 traders

Top 2 hold 100%

Freshness

Fresh

0h old

Flip Quality

Clean

0 consensus flips

Breadth vs concentrationCrowded

40% of non-arb traders are on Under. Concentration is driven by the top two positions owning 100% of that side's value.

Cohort consensusHand-picked vs top 1000 · whales, sharps, snipers, contrarians

whaleUnder 100% · 1

Aligned

ctrOver 75% · 4

Diverging

Top 1000Over 60% · 5

Diverging

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 chance51.7%

49.5¢ 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

+$93.24

Max Loss

-$100.00

193.2

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.