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In backtest, only 28% of 0xa8ef…1f28's buys could be fully copied at a 5-minute delay

Crypto 0xa8ef80916dff40231cdc0a021ed3aac9df031f28 Profile on Polymarket

Only 28% of this trader's buys could be fully copied at a 5-minute delay, and another 22% only partly; the +$126.21 comes from the part you could copy. A copier who mirrored 0xa8ef…1f28's 74 buys across 25 markets with a 5-minute delay and $100 per trade would have ended at +$126.21. The leader lost $1,358 at the same size, so there were no returns to keep; the copier only came out ahead because later prices happened to be better: the delay helped by +$1,476, slippage helped by +$111.01 and fees $102.77. In the backtest, this simulated copy would have tied up to $1,180 at once across 37 positions.

Copy delay

Each time the trader buys, the simulation copies this much. Not a total budget.

Key numbers

Follower PnL
+$126.21
Incl. estimates −$247.52
Max drawdown −$695.72
ROI +5.0% on total cost
Returns kept
n/a (The leader lost money at this size, so there were no returns to keep)
Leader, same size −$1,358
leader lost money
Peak capital in use
$1,180
Incl. estimates $2,196
74 copied buys · $2,538 total cost
Fill rate
28%
Most buys couldn't be fully copied
Incl. estimates 74%
21 filled · 16 partial · 37 no buyers
Backtest score
19/100
74 buys · 25 markets

The headline numbers only count what real trades in the 10 minutes after the delay prove. “Including estimates” also counts the unproven part of a buy when order-book or trading-volume evidence says it was fillable, at an estimated price. Treat it as an upper view, not a promise. 41 estimated: 1 high · 33 medium · 7 low · 9 thin How we estimate

Cumulative PnL across all copied positions

X axis
Max drawdown −$696

Final values: 0 min: +$57.48; 1 min: −$75.62; 5 min: +$126.21; 30 min: −$660.37. Max drawdown −$695.72 (5 min, Sep 21). Hover or use the arrow keys to read values.

Chart data by day
Day (UTC)0 min1 min5 min30 min
Sep 21−$456.34−$419.70−$402.45−$186.45
Sep 22−$15.94+$40.16+$252.53−$113.79
Sep 23−$144.71−$89.23+$136.25−$286.75
Sep 24−$248.27−$300.46−$73.66−$380.79
Sep 25+$185.33+$133.15+$317.77−$432.60
Sep 26+$146.41+$102.10+$313.66−$638.52
Sep 27+$93.14+$48.82+$260.38−$645.09
Sep 28+$93.14+$48.82+$260.38−$645.09
Sep 29+$93.14+$48.82+$260.38−$645.09
Sep 30+$93.14+$48.82+$260.38−$645.09
Oct 1+$93.14+$48.82+$260.38−$645.09
Oct 2−$8.96−$53.41+$158.14−$659.58
Oct 3−$8.96−$53.41+$158.14−$659.58
Oct 4−$8.96−$53.41+$158.14−$659.58
Oct 5−$8.96−$53.41+$158.14−$659.58
Oct 6−$8.96−$53.41+$158.14−$659.58
Oct 7−$8.96−$53.41+$158.14−$659.58
Oct 8−$8.96−$53.41+$158.14−$659.58
Oct 9−$8.96−$53.41+$158.14−$659.58
Oct 10−$8.96−$53.41+$158.14−$659.58
Oct 11−$8.96−$53.41+$158.14−$659.58
Oct 12−$8.96−$53.41+$158.14−$659.58
Oct 13−$8.96−$53.41+$158.14−$659.58
Oct 14−$8.96−$53.41+$158.14−$659.58
Oct 15+$57.48−$75.62+$126.21−$660.37

Every delay side by side

DelayFollower PnLKeptFilled
0 min+$57.48n/a (The leader lost money at this size, so there were no returns to keep)24%
1 min−$75.62n/a (The leader lost money at this size, so there were no returns to keep)28%
5 min (selected)+$126.21n/a (The leader lost money at this size, so there were no returns to keep)28%
30 min−$660.37n/a (The leader lost money at this size, so there were no returns to keep)28%

Where the returns go

  1. Leader PnL at your size−$1,358
  2. Delay helped+$1,476
  3. Slippage helped+$111.01
  4. Fees (buys $99.06 · sells $3.71)−$102.77
  5. Follower PnL+$126.21

Leader PnL is scaled to your per-trade size. Delay cost is the price move between the leader's fill and yours; slippage is walking the book to fill your size; fees use the 2026 fee schedule. Methodology.

By category

CategoryTradesFollower PnLROI
Crypto74+$126.21+5.0%

Data version 12089 · computed Oct 26, 2026 · 0 unsettled positions marked at the last traded price.

Trades

Each leader buy and the copy we simulated at the selected delay. Open “Details” to see the market fills behind the copy price.

How fills are simulated: a copy can only fill against real taker buys of the same outcome within 10 minutes after the delay, so the headline numbers are conservative. Fill basis adds a second opinion: where no trade proved a fill, order-book or volume evidence may say the size was still fillable (an estimate, never in the headline). Methodology.

Filled whole order · Partial (NN%) part of it · No buyers nobody bought in the window — not counted · Data not in yet too recent to evaluate

Show
Order
Date Market Leader price Copy price Fill Fill basis Follower PnL Details
Trades load from the live API when this section is visible.
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More Crypto traders

See the full Crypto copyability board, read the methodology, or learn how slippage and fees eat into copied returns.

This is a simulation built from historical on-chain fills; it is not a record of real copy trades. Past results don't predict future results. Only the wallet address and its public Polymarket name are shown.