
Spurs vs. Bulls: O/U 251.5
5 of 9 top Polymarket traders hold Under (56%) · Under at 60¢ · $919 held · ended Nov 12
⚠️
Avoid
Under
9
Under 56%
2 arb excluded
$919.36
$31.7
78.7¢ → 60¢
-24% since entry · 5 traders
Research grade
AvoidUnder at 60%
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.
- Favourite (60–95¢)Full year, out of sample: 0.70–0.90 lost −0.9 % a trade (n 26,050, 95 % CI −1.5 to −0.3): the least bad band, still a loss. The Oct 22 backtest's +0.4 % (n 4,327) was not confirmed.
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
5 of 9 top traders (56%)2 arbitrage traders dimmed4 hold an outcome priced under 50%6 small positions dimmed (<$100 invested)
Outcome Probabilities
Smart Money Breakdown by Outcome
Signal Intelligence
Momentum
Flat
+0 pts consensus
Breadth
4 traders
Top 2 hold 90%
Freshness
Fresh
0h old
Flip Quality
Clean
0 consensus flips
50% of non-arb traders are on Under. Concentration is driven by the top two positions owning 90% of that side's value.
| Trader | Position | Invested | Value | PnL | Record |
|---|---|---|---|---|---|
FL FlaznorpARB<$100 | Underavg 62.5¢ | $304.04 | $318.05 | +$32.83 | 51% 1925-1866 (3791) |
| └ Over leg | Overavg 31.4¢ | $110.96 | $164.15 | +$58.86 | |
| └ Under leg | Underavg 62.5¢ | $179.94 | $153.91 | -$26.03 | |
38 38791873984189 | Underavg 80¢ | $226.4 | $183.37 | -$39.52 | 48% 1430-1573 (3003) |
MA MadridTimeCTR | Overavg 20¢ | $76.87 | $153.74 | +$76.87 | 31% 412-897 (1309) |
![]() RN1ARB<$100 | Overavg 42.9¢ | $213.87 | $87.2 | -$39.46 | 57% 4059-3079 (7138) |
| └ Over leg | Overavg 42.9¢ | $74.19 | $60.55 | -$13.64 | |
| └ Under leg | Underavg 72¢ | $29.52 | $26.65 | -$25.82 | |
PA Pan9X | Underavg 80.4¢ | $102.08 | $82.52 | -$19.56 | 49% 693-734 (1427) |
0X 0x228B8d11EBa89BF1c554f8879a9293B7106DaF4c-1765442354872CTR<$100 | Overavg 41.6¢ | $29.88 | $32.86 | +$2.99 | 55% 719-584 (1303) |
LI LightParadoxCTR<$100 | Overavg 19¢ | $14.88 | $25.06 | +$10.18 | 31% 412-920 (1332) |
GH ghorrock<$100 | Underavg 69.6¢ | $20.19 | $18.85 | -$1.34 | 55% 683-554 (1237) |
65 6512395314597884<$100 | Underavg 59.2¢ | $11.03 | $12.72 | +$1.68 | 50% 3301-3258 (6559) |
E5 0xe550...be3f<$100 | Underavg 55¢ | $2.75 | $2.68 | -$0.07 | — |
0X 0x1bc32be106439240f59aa25668e613831a5cdc6eCTR<$100 | Overavg 37¢ | $1.85 | $2.33 | +$0.48 | 60% 2617-1724 (4341) |
Invested
$304.04
Value
$318.05
PnL
+$32.83
Record
51%
1925-1866 (3791)
Both legs:
Invested
$226.4
Value
$183.37
PnL
-$39.52
Record
48%
1430-1573 (3003)
Invested
$76.87
Value
$153.74
PnL
+$76.87
Record
31%
412-897 (1309)
RN1ARB<$100Invested
$213.87
Value
$87.2
PnL
-$39.46
Record
57%
4059-3079 (7138)
Both legs:
Invested
$102.08
Value
$82.52
PnL
-$19.56
Record
49%
693-734 (1427)
Invested
$29.88
Value
$32.86
PnL
+$2.99
Record
55%
719-584 (1303)
Invested
$14.88
Value
$25.06
PnL
+$10.18
Record
31%
412-920 (1332)
Invested
$20.19
Value
$18.85
PnL
-$1.34
Record
55%
683-554 (1237)
Invested
$11.03
Value
$12.72
PnL
+$1.68
Record
50%
3301-3258 (6559)
Invested
$2.75
Value
$2.68
PnL
-$0.07
Record
—
Invested
$1.85
Value
$2.33
PnL
+$0.48
Record
60%
2617-1724 (4341)
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EV Calculator
Consensus % is how many tracked traders hold a side, not a win probability.
60.0¢ price + 1.0¢ spread + 1.2¢ fee (Sports 5%). Win more often than this and the bet pays.
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
Traders in this Market
Flaznorp
ARBArbitrage — excluded
38791873984189
Under — $183.37
MadridTime
CTROver — $153.74

RN1
ARBArbitrage — excluded
Pan9X
Under — $82.52
0x228B8d11EBa89BF1c554f8879a9293B7106DaF4c-1765442354872
CTROver — $32.86
LightParadox
CTROver — $25.06
ghorrock
Under — $18.85
6512395314597884
Under — $12.72
0xe550...be3f
Under — $2.68