# Close Positions ## PnL calculation The frontend surfaces a simulated PnL based on the entry price, current price, leverage ratio, accrued interest and the fees. There can be slight mismatch for realized PnL at position closing, since there can be price impact, which is slippage protected. ## Residual Due to the nature of AMM math, the exact resulting price point after the swap can be diffuclt to track. As a result, at the position closing, there may be a small residual of the position token left (e.g., WETH, if the trader is using USDC to long WETH). Such residual is returned to the trader wallet at position closing. The trader may choose to swap into the source token (e.g., USDC) afterwards. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.particle.trade/trading/close-positions.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.