
Lakers vs. Pistons: O/U 218.5
5 of 12 top Polymarket traders hold Under (42%) · Under at 61¢ · $9K held · ended Nov 8
⚠️
Avoid
Under
12
Under 42%
2 arb excluded
$8.6K
-$18.23
54.4¢ → 61¢
+12% since entry · 5 traders
Research grade
AvoidUnder at 61%
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 12 top traders (42%)2 arbitrage traders dimmed7 hold an outcome priced under 50%5 small positions dimmed (<$100 invested)
Outcome Probabilities
Smart Money Breakdown by Outcome
| Trader | Position | Invested | Value | PnL | Record |
|---|---|---|---|---|---|
FE ferrariChampions2026 | Underavg 53¢ | $6.9K | $3.7K | +$34.46 | 46% 33417-38911 (72328) |
AY ay118CTR | Overavg 47.5¢ | $3.4K | $3.3K | -$71.97 | 41% 58-82 (140) |
FL Flaznorp | Underavg 64.4¢ | $637.09 | $629.33 | -$7.76 | 52% 47368-44608 (91976) |
![]() RN1ARB<$100 | Underavg 68¢ | $275.92 | $261.16 | -$14.76 | 53% 70249-61821 (132070) |
| └ Under leg | Underavg 68¢ | $170 | $172.5 | +$2.5 | |
| └ Over leg | Overavg 37¢ | $105.92 | $88.66 | -$17.26 | |
38 38791873984189ARB<$100 | Overavg 31.3¢ | $139.25 | $174.83 | +$35.58 | 48% 70301-75984 (146285) |
| └ Over leg | Overavg 31.3¢ | $108.02 | $136.28 | +$28.25 | |
| └ Under leg | Underavg 49¢ | $31.23 | $38.56 | +$7.33 | |
NM NM-PCTR | Overavg 46¢ | $299 | $139.04 | +$1.5 | 58% 22573-16672 (39245) |
GC GC-PCTR | Overavg 46¢ | $106.48 | $107.64 | +$1.16 | 57% 22246-16603 (38849) |
AN Anon455 | Underavg 54.1¢ | $78.4 | $100.01 | +$21.61 | 54% 4009-3371 (7380) |
JU justaluckydudeCTR | Overavg 45.5¢ | $101.46 | $90.32 | -$11.14 | 53% 13686-12064 (25750) |
PA Pan9XCTR<$100 | Overavg 31.4¢ | $39.97 | $49.49 | +$9.53 | 52% 27288-24794 (52082) |
MU Multicoloured-SerfCTR<$100 | Overavg 47¢ | $29.86 | $33.63 | +$3.77 | 48% 521-567 (1088) |
0X 0x9b11866433281ade9f2811dbde8acdefc45f5375<$100 | Underavg 60¢ | $6 | $7.9 | +$1.9 | 50% 5216-5115 (10331) |
GH ghorrock<$100 | Underavg 73¢ | $7.31 | $6.11 | -$1.2 | 57% 24691-18283 (42974) |
AM ameisgoat11CTR<$100 | Overavg 48¢ | $5 | $2.33 | -$0.08 | 52% 9525-8636 (18161) |
Invested
$6,891
Value
$3.7K
PnL
+$34.46
Record
46%
33417-38911 (72328)
Invested
$3,417.64
Value
$3.3K
PnL
-$71.97
Record
41%
58-82 (140)
Invested
$637.09
Value
$629.33
PnL
-$7.76
Record
52%
47368-44608 (91976)
RN1ARB<$100Invested
$275.92
Value
$261.16
PnL
-$14.76
Record
53%
70249-61821 (132070)
Both legs:
Invested
$139.25
Value
$174.83
PnL
+$35.58
Record
48%
70301-75984 (146285)
Both legs:
Invested
$299
Value
$139.04
PnL
+$1.5
Record
58%
22573-16672 (39245)
Invested
$106.48
Value
$107.64
PnL
+$1.16
Record
57%
22246-16603 (38849)
Invested
$78.4
Value
$100.01
PnL
+$21.61
Record
54%
4009-3371 (7380)
Invested
$101.46
Value
$90.32
PnL
-$11.14
Record
53%
13686-12064 (25750)
Invested
$39.97
Value
$49.49
PnL
+$9.53
Record
52%
27288-24794 (52082)
Invested
$29.86
Value
$33.63
PnL
+$3.77
Record
48%
521-567 (1088)
Invested
$6
Value
$7.9
PnL
+$1.9
Record
50%
5216-5115 (10331)
Invested
$7.31
Value
$6.11
PnL
-$1.2
Record
57%
24691-18283 (42974)
Invested
$5
Value
$2.33
PnL
-$0.08
Record
52%
9525-8636 (18161)
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EV Calculator
Consensus % is how many tracked traders hold a side, not a win probability.
61.0¢ 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
ferrariChampions2026
Under — $3.7K
ay118
CTROver — $3.3K
Flaznorp
Under — $629.33

RN1
ARBArbitrage — excluded
38791873984189
ARBArbitrage — excluded
NM-P
CTROver — $139.04
GC-P
CTROver — $107.64
Anon455
Under — $100.01
justaluckydude
CTROver — $90.32
Pan9X
CTROver — $49.49