How fills become trades
Partial fills, scaling in and out, flips and open positions — how Ink builds round-trip trades and their P&L.
Your broker records fills — every buy and sell. Ink turns them into trades: one trade runs from flat, through every fill, back to flat.
The rules
- Scaling in or out is one trade. Buy 1, buy 1 more, sell 2: one trade of 2 contracts. Buy 2, sell 1, sell 1: also one trade.
- A flip closes one trade and opens the next. Long 2 and sell 4: the first 2 close the long trade, the other 2 open a short.
- An open position isn't a trade yet. Its fills wait until the position is flat again — then the trade appears.
- Each instrument and account is separate. MNQ and ES fills never mix, and neither do two accounts.
How the P&L is worked out
Ink counts the price move in ticks and multiplies by the contract's tick value — so a point on MNQ and a point on NQ are worth what they really are. Fees are subtracted to get the net P&L. Your broker's own P&L figure is never copied in; Ink computes it and, for Tradovate Performance and TopstepX files, checks it against the broker's.
On a trade, Avg entry and Avg exit are the quantity-weighted prices of the entries and exits, and Points is the move per contract.
Changing an instrument later
The P&L is calculated when the trade is saved. If an instrument's tick value were ever corrected, trades you already have keep the P&L they were saved with.