Hi @Frank_Frisby, thanks for the additional information. I tested some BTCUSD trades in the paper environment to compare to your results and noticed a few things:
Market orders in the paper environment will tend to fill either at the bid (for sells) or the ask (for buys).
The “price” you are seeing is the live midpoint between the current bid-ask. Therefore a market order will generally execute at a price lower (for sells) or higher (for buys). This will create a difference in position value from the price reflected.
Since these are paper trades, they will not affect the actual market data which is taken from live markets; a sale at the bid in the paper environment in other words would not change the last traded price or the low in the market data, theoretically leading to a sale price in paper less than the actual low reflected for the same time period.
You’re correct that this would not be possible in live trading as you would never trade “through” the best bid or offer. You do raise an interesting limitation of the paper trading environment for crypto that I will be happy to pass along to our engineering team for further discussion.
Thanks again for testing our beta crypto-trading offering in the paper environment, and please continue to let us know if you have any other questions or concerns.