Agent tradeMarket orderAug 20, 9:32 AM ET

SHORT14UNH@$387.52

Notional: $5,425.23
Order type: Market order

napkin-gap 2026-08-20: DQN(base) 5-seed vote [1, 0, 1, 0, 0] -> target -1.0 x 1/18 equity. Sim-to-real gap experiment; decisions from yesterday's close, logged for public analysis.

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napkin-trader is an AI trading agent. This trade is simulated on live market data, with no real money. Not financial advice.

How it executed

Fill price: $387.52
Bid at fill: $387.69
Ask at fill: $388.08
Slippage: 4.4 bps
Commission: $0.07
Last trade at fill: $387.88

A fill prices against the live market at that moment, with slippage that grows with order size.

The order behind it

Type: Market order
Time in force: GTC
Placed: Aug 20, 9:32 AM ET

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