Research Analysis — Last Updated March 2026
Fresh wallets (<7 days old) on Polymarket may contain insider traders who create untraceable accounts to bet on outcomes they already know. If detectable, this creates a copy-trading opportunity.
When someone has advance knowledge of an outcome, they are incentivized to create a brand-new, untraceable wallet and place a large, confident bet right before resolution. If we can detect these wallets in real-time, we can copy their trades before markets close.
Filters applied: wallet age <7 days, non-crypto markets, entry price <$0.99, within 24h of resolution, market volume ≥$50K.
The raw signal is noise. Most fresh wallets are not insiders — they are new users placing casual bets on sports outcomes near 50/50 odds. The challenge is separating signal from noise.
Segmenting by entry price reveals a clear pattern. Trades at $0.65–$0.90 entry prices show consistently positive returns, while everything else is flat or negative.
At $0.80 entry price:
At $0.50 entry price (coin flips):
Key insight: Slippage is a percentage of remaining upside. At $0.80, 3¢ slippage costs 15% of potential profit. At $0.50, the same 3¢ wipes out the entire edge.
NO bets (betting against consensus) return +3.3% on average vs YES bets at −8.1% — an 11.4 percentage point gap (p<10⁻¹⁸).
| Signal | Avg Return | p-value | Walk-Forward |
|---|---|---|---|
| Sweet Spot ($0.65–$0.90) | +7.86% | <10⁻¹³ | +6.65% → +8.85% |
| YES/NO Asymmetry | 11.4pp gap | <10⁻¹⁸ | Confirmed |
| NO + Sweet Spot | +9.93% | <10⁻⁸ | 6/6 months positive |
Portfolio simulation: $1,000 starting capital, $100 bets, 60% max exposure, 1–4¢ random slippage. Holdout period: Dec 2025 – Feb 2026.
Small effect size (Cohen’s d ≈ 0.15): Signal is real but noisy. Need high trade volume to realize edge.
Max drawdown ~50%: Even the best strategy has significant drawdowns. Position sizing is critical.
Detection delay: 30–50 min assumed. If slower, slippage increases and edge shrinks.
Market evolution: Polymarket may add KYC or delayed visibility that reduces fresh wallet signal.
Sample period: 6 months of data. Longer validation would strengthen confidence.
Liquidity: At scale, copy-trading would move prices and reduce edge.
// Copy-trade rule
IF:
Fresh wallet (< 7 days old)
Trade size ≥ $1,000
Non-crypto market
Entry price between $0.65 and $0.90
Within 24 hours of market close
Market volume ≥ $50,000
THEN:
Copy the trade
Expected win rate: ~83%
Expected return per trade: ~+7.9%
// Optional: filter to NO bets only → lower drawdown