
Celtics vs. Bucks: O/U 218.5
10 of 13 top Polymarket traders hold Under (77%) · Under at 72¢ · $8K held · ends Nov 9
⚠️
Avoid
Under
13
Under 77%
2 arb excluded
$7.5K
$827.91
52¢ → 72¢
+39% since entry · 10 traders
Research grade
AvoidUnder at 72%
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.
- 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
10 of 13 top traders (77%)2 arbitrage traders dimmed3 hold an outcome priced under 50%8 small positions dimmed (<$100 invested)
Outcome Probabilities
Smart Money Breakdown by Outcome
| Trader | Position | Invested | Value | PnL | Record |
|---|---|---|---|---|---|
KE keeptheblueflagflyinghigh | Underavg 52¢ | $3.6K | $4.9K | +$1.3K | 46% 2028-2381 (4409) |
PL plustiCTR | Overavg 48¢ | $1.5K | $890.62 | -$609.38 | 47% 17-19 (36) |
FL FlaznorpARB<$100 | Overavg 49.4¢ | $614.06 | $507.97 | -$106.09 | 52% 47368-44608 (91976) |
| └ Under leg | Underavg 54.8¢ | $214.1 | $281.33 | +$67.23 | |
| └ Over leg | Overavg 49.4¢ | $399.96 | $226.63 | -$173.33 | |
0X 0x228B8d11EBa89BF1c554f8879a9293B7106DaF4c-1765442354872 | Underavg 53.9¢ | $333.95 | $420.27 | +$86.32 | 57% 17059-13038 (30097) |
![]() RN1ARB<$100 | Overavg 51.4¢ | $321.89 | $333.75 | +$11.86 | 53% 70249-61821 (132070) |
| └ Under leg | Underavg 44.8¢ | $149.33 | $239.76 | +$90.43 | |
| └ Over leg | Overavg 51.4¢ | $172.56 | $93.99 | -$78.57 | |
65 6512395314597884 | Underavg 59¢ | $142.3 | $160.8 | +$18.5 | 51% 5685-5538 (11223) |
VE Venusian | Underavg 43¢ | $107.52 | $103.68 | -$3.84 | 47% 2189-2445 (4634) |
PA Pan9X<$100 | Underavg 58.6¢ | $55.64 | $71.16 | +$15.52 | 52% 27288-24794 (52082) |
LI Limousin<$100 | Underavg 45¢ | $61.1 | $55.25 | -$5.85 | 49% 2223-2352 (4575) |
TA takeormakeCTR<$100 | Overavg 44¢ | $46.2 | $29.92 | -$16.28 | 52% 5562-5184 (10746) |
38 38791873984189CTR<$100 | Overavg 42¢ | $13.44 | $8.96 | -$4.48 | 48% 70301-75984 (146285) |
HO HomeRunHazard<$100 | Underavg 46¢ | $9.11 | $8.22 | -$0.89 | 54% 19992-16872 (36864) |
0X 0x9b11866433281ade9f2811dbde8acdefc45f5375<$100 | Underavg 71¢ | $6.98 | $7.08 | +$0.1 | 50% 5216-5115 (10331) |
AM ameisgoat11<$100 | Underavg 42¢ | $2.13 | $2.13 | +$0 | 52% 9525-8636 (18161) |
SN SnakeBall<$100 | Underavg 40¢ | $1.87 | $1.98 | +$0.12 | 50% 48622-48197 (96819) |
Invested
$3,594.85
Value
$4.9K
PnL
+$1.3K
Record
46%
2028-2381 (4409)
Invested
$1,500
Value
$890.62
PnL
-$609.38
Record
47%
17-19 (36)
Invested
$614.06
Value
$507.97
PnL
-$106.09
Record
52%
47368-44608 (91976)
Both legs:
Invested
$333.95
Value
$420.27
PnL
+$86.32
Record
57%
17059-13038 (30097)
RN1ARB<$100Invested
$321.89
Value
$333.75
PnL
+$11.86
Record
53%
70249-61821 (132070)
Both legs:
Invested
$142.3
Value
$160.8
PnL
+$18.5
Record
51%
5685-5538 (11223)
Invested
$107.52
Value
$103.68
PnL
-$3.84
Record
47%
2189-2445 (4634)
Invested
$55.64
Value
$71.16
PnL
+$15.52
Record
52%
27288-24794 (52082)
Invested
$61.1
Value
$55.25
PnL
-$5.85
Record
49%
2223-2352 (4575)
Invested
$46.2
Value
$29.92
PnL
-$16.28
Record
52%
5562-5184 (10746)
Invested
$13.44
Value
$8.96
PnL
-$4.48
Record
48%
70301-75984 (146285)
Invested
$9.11
Value
$8.22
PnL
-$0.89
Record
54%
19992-16872 (36864)
Invested
$6.98
Value
$7.08
PnL
+$0.1
Record
50%
5216-5115 (10331)
Invested
$2.13
Value
$2.13
PnL
+$0
Record
52%
9525-8636 (18161)
Invested
$1.87
Value
$1.98
PnL
+$0.12
Record
50%
48622-48197 (96819)
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EV Calculator
Consensus % is how many tracked traders hold a side, not a win probability.
72.0¢ price + 1.0¢ spread + 1.0¢ 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
keeptheblueflagflyinghigh
Under — $4.9K
plusti
CTROver — $890.62
Flaznorp
ARBArbitrage — excluded
0x228B8d11EBa89BF1c554f8879a9293B7106DaF4c-1765442354872
Under — $420.27

RN1
ARBArbitrage — excluded
6512395314597884
Under — $160.8
Venusian
Under — $103.68
Pan9X
Under — $71.16
Limousin
Under — $55.25
takeormake
CTROver — $29.92