
Mavericks vs. Celtics: O/U 218.5
6 of 14 top Polymarket traders hold Over (43%) · Over at 52¢ · $17K held · ended Nov 15
⚠️
Avoid
Over
14
Over 43%
3 arb excluded
$17.4K
-$745.23
48.2¢ → 51.5¢
+7% since entry · 6 traders
Research grade
AvoidOver at 52%
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 50–60¢Full year, out of sample: 0.50–0.70 lost −2.9 % a trade (n 23,546, 95 % CI −3.9 to −1.9).
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
6 of 14 top traders (43%)3 arbitrage traders dimmed8 hold an outcome priced under 50%9 small positions dimmed (<$100 invested)
Outcome Probabilities
Smart Money Breakdown by Outcome
| Trader | Position | Invested | Value | PnL | Record |
|---|---|---|---|---|---|
QI qinlaobanCTR | Underavg 52¢ | $4.2K | $4.0K | -$120 | 6% 12-175 (187) |
JO JoeyAroyyOO | Overavg 48¢ | $4.6K | $3.9K | -$672.06 | 49% 136-144 (280) |
![]() nigiri99 | Overavg 48.6¢ | $2.4K | $2.5K | +$72.35 | 51% 793-768 (1561) |
HO HomeRunHazardARB<$100 | Overavg 48¢ | $2.2K | $2.2K | -$1.64 | 56% 3959-3128 (7087) |
| └ Over leg | Overavg 48¢ | $1.1K | $1.1K | -$11.64 | |
| └ Under leg | Underavg 52¢ | $1.0K | $1.1K | +$10 | |
FL FlaznorpARB<$100 | Underavg 52.7¢ | $2.4K | $1.8K | +$0.94 | 48% 4844-5167 (10011) |
| └ Under leg | Underavg 52.7¢ | $1.1K | $1.0K | -$78.98 | |
| └ Over leg | Overavg 46.3¢ | $646.51 | $726.43 | +$79.92 | |
0X 0x228B8d11EBa89BF1c554f8879a9293B7106DaF4c-1765442354872ARB<$100 | Overavg 47.6¢ | $1.6K | $1.5K | -$56.76 | 54% 2084-1743 (3827) |
| └ Over leg | Overavg 47.6¢ | $884.21 | $798.51 | -$85.7 | |
| └ Under leg | Underavg 54.6¢ | $668.39 | $697.33 | +$28.94 | |
![]() VeryLucky888CTR | Underavg 51.9¢ | $1.1K | $1.1K | -$30.05 | 54% 2045-1764 (3809) |
OV overtimemarkets.xyz-singlesCTR | Underavg 50¢ | $400 | $200 | +$0 | 63% 152-88 (240) |
![]() RN1<$100 | Overavg 52¢ | $71.59 | $75.03 | +$3.44 | 54% 6165-5274 (11439) |
VE VenusianCTR<$100 | Underavg 48¢ | $66.08 | $68.83 | +$2.75 | 38% 1462-2368 (3830) |
LI Limousin<$100 | Overavg 48¢ | $28.8 | $29.7 | +$0.9 | 38% 1433-2333 (3766) |
FE ferdinand2CTR<$100 | Underavg 56.3¢ | $29.7 | $18.34 | -$0.26 | 48% 2668-2892 (5560) |
SU suntori<$100 | Overavg 50¢ | $19.99 | $16.39 | -$3.6 | 46% 3434-3964 (7398) |
KE keeptheblueflagflyinghighCTR<$100 | Underavg 46¢ | $10.98 | $12.24 | +$1.26 | 49% 2930-3029 (5959) |
NO NotJump<$100 | Overavg 50¢ | $10 | $10.1 | +$0.1 | 49% 1261-1304 (2565) |
MA MadridTimeCTR<$100 | Underavg 50¢ | $5 | $4.8 | -$0.2 | 38% 1445-2329 (3774) |
TO topdogbigboiCTR<$100 | Underavg 54¢ | $1.17 | $1.29 | +$0.12 | 39% 1738-2713 (4451) |
Invested
$4,160
Value
$4.0K
PnL
-$120
Record
6%
12-175 (187)
Invested
$4,613.8
Value
$3.9K
PnL
-$672.06
Record
49%
136-144 (280)
nigiri99Invested
$2,427.65
Value
$2.5K
PnL
+$72.35
Record
51%
793-768 (1561)
Invested
$2,157.52
Value
$2.2K
PnL
-$1.64
Record
56%
3959-3128 (7087)
Both legs:
Invested
$2,443.04
Value
$1.8K
PnL
+$0.94
Record
48%
4844-5167 (10011)
Both legs:
Invested
$1,552.6
Value
$1.5K
PnL
-$56.76
Record
54%
2084-1743 (3827)
Both legs:
VeryLucky888CTRInvested
$1,084.99
Value
$1.1K
PnL
-$30.05
Record
54%
2045-1764 (3809)
Invested
$400
Value
$200
PnL
+$0
Record
63%
152-88 (240)
RN1<$100Invested
$71.59
Value
$75.03
PnL
+$3.44
Record
54%
6165-5274 (11439)
Invested
$66.08
Value
$68.83
PnL
+$2.75
Record
38%
1462-2368 (3830)
Invested
$28.8
Value
$29.7
PnL
+$0.9
Record
38%
1433-2333 (3766)
Invested
$29.7
Value
$18.34
PnL
-$0.26
Record
48%
2668-2892 (5560)
Invested
$19.99
Value
$16.39
PnL
-$3.6
Record
46%
3434-3964 (7398)
Invested
$10.98
Value
$12.24
PnL
+$1.26
Record
49%
2930-3029 (5959)
Invested
$10
Value
$10.1
PnL
+$0.1
Record
49%
1261-1304 (2565)
Invested
$5
Value
$4.8
PnL
-$0.2
Record
38%
1445-2329 (3774)
Invested
$1.17
Value
$1.29
PnL
+$0.12
Record
39%
1738-2713 (4451)
Chat
EV Calculator
Consensus % is how many tracked traders hold a side, not a win probability.
51.5¢ 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
qinlaoban
CTRUnder — $4.0K
JoeyAroyyOO
Over — $3.9K

nigiri99
Over — $2.5K
HomeRunHazard
ARBArbitrage — excluded
Flaznorp
ARBArbitrage — excluded
0x228B8d11EBa89BF1c554f8879a9293B7106DaF4c-1765442354872
ARBArbitrage — excluded

VeryLucky888
CTRUnder — $1.1K
overtimemarkets.xyz-singles
CTRUnder — $200

RN1
Over — $75.03
Venusian
CTRUnder — $68.83