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In backtest, only 8% of 0x819d…07f1's buys could be fully copied at a 5-minute delay

Weather 0x819dfea4ffa9c4d3ef27f00e2dbac7e9e93507f1 Profile on Polymarket

Only 8% of this trader's buys could be fully copied at a 5-minute delay, and another 15% only partly; the +$4,723 comes from the part you could copy. A copier who mirrored 0x819d…07f1's 3,247 buys across 1,596 markets with a 5-minute delay and $100 per trade would have kept 81% of the leader's returns: +$4,723 against +$5,802 for the leader at the same size. In this backtest, most of the edge survived the delay, and 8% of buys could be filled within 10 minutes. The remaining gap is delay cost $59.10, slippage $253.88 and fees $765.84. In the backtest, this simulated copy would have tied up to $9,576 at once across 740 positions.

Copy delay

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

Key numbers

Follower PnL
+$4,723
Incl. estimates −$5,253
Max drawdown −$2,877
ROI +13.5% on total cost
Returns kept
81.4%
Leader, same size +$5,802
follower ÷ leader
Peak capital in use
$9,576
Incl. estimates $49,212
3,247 copied buys · $35,016 total cost
Fill rate
8%
Most buys couldn't be fully copied
Incl. estimates 39%
259 filled · 481 partial · 2,507 no buyers
Backtest score
66/100
3,247 buys · 1,596 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. 1,807 estimated: 1,145 high · 223 medium · 439 low · 1,072 thin How we estimate

Cumulative PnL across all copied positions

X axis
Max drawdown −$2.9k

Final values: 0 min: +$4,744; 1 min: +$3,886; 5 min: +$4,723; 30 min: +$10,870. Max drawdown −$2,877 (5 min, Oct 20). Hover or use the arrow keys to read values.

Chart data by day
Day (UTC)0 min1 min5 min30 min
Sep 27+$528.32+$464.32+$454.26+$210.63
Sep 28+$3,091+$2,854+$2,001+$1,572
Sep 29+$3,354+$3,108+$2,264+$1,605
Sep 30+$5,046+$4,816+$4,171+$2,436
Oct 1+$4,946+$4,730+$4,142+$2,342
Oct 2+$4,676+$4,439+$3,868+$2,198
Oct 3+$4,442+$4,240+$3,733+$2,192
Oct 4+$6,104+$5,871+$4,723+$4,000
Oct 5+$5,851+$5,627+$4,854+$3,956
Oct 6+$5,802+$5,575+$5,004+$3,861
Oct 7+$7,869+$7,552+$6,300+$12,543
Oct 8+$7,531+$7,228+$6,081+$12,302
Oct 9+$7,684+$7,334+$5,930+$12,358
Oct 10+$8,048+$7,409+$6,193+$13,194
Oct 11+$8,186+$7,392+$6,716+$13,215
Oct 12+$8,191+$7,050+$6,845+$13,321
Oct 13+$8,568+$7,275+$7,033+$13,266
Oct 14+$8,649+$7,675+$7,336+$13,448
Oct 15+$8,454+$7,433+$7,252+$13,314
Oct 16+$8,339+$7,316+$7,299+$13,260
Oct 17+$8,448+$7,355+$7,170+$13,147
Oct 18+$8,286+$7,239+$7,314+$13,043
Oct 19+$5,251+$4,387+$4,486+$10,895
Oct 20+$5,106+$4,309+$4,484+$10,828
Oct 21+$5,097+$4,302+$4,483+$10,828
Oct 22+$5,496+$4,706+$4,851+$10,818
Oct 23+$5,809+$4,993+$5,271+$11,060
Oct 24+$4,624+$3,765+$4,907+$10,780
Oct 25+$4,101+$3,289+$5,215+$10,587
Oct 26+$4,744+$3,886+$4,723+$10,870

Every delay side by side

DelayFollower PnLKeptFilled
0 min+$4,74481.8%11%
1 min+$3,88667.0%10%
5 min (selected)+$4,72381.4%8%
30 min+$10,870100%+ (Exactly 187.3%: the simulated copy did better than the leader)7%

Where the returns go

  1. Leader PnL at your size+$5,802
  2. Delay cost−$59.10
  3. Slippage−$253.88
  4. Fees (buys $713.21 · sells $52.63)−$765.84
  5. Follower PnL+$4,723

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
Weather2,442+$1,020+11.5%
Politics491+$149.06+1.0%
Sports150+$1,390+15.4%
Tech94+$1,766+146%
Geopolitics40+$242.14+18.8%
Culture29+$156.59+56.3%
Economy1$0.000.0%

Data version 12091 · computed Oct 26, 2026 · 322 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 Weather traders

See the full list of backtested wallets, 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.