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Trading JournalJournal Basics

Understanding Trade Types

Long vs. short, and how to handle multi-leg strategies cleanly.

Key takeaways

  • Direction (long or short) controls how the whole trade's P&L is calculated.
  • Long: buys are entries, sells are exits - profit when price rises.
  • Short: sells open the position, buys cover it - profit when price falls.
  • Multi-leg strategies (option spreads, futures rolls) should be logged as separate trades grouped by a shared Flag.
  • Pick direction at creation; flipping it later recomputes P&L and confuses historical reports.

Direction controls how P&L is calculated for the trade as a whole.

  • Long - buys are entries, sells are exits. Profit when price rises.
  • Short - sells are entries (opening the short), buys are exits (covering). Profit when price falls.

For multi-leg or complex strategies (option spreads, futures rolls), record each leg as its own trade and use Flags to group them - e.g. tag both legs of a calendar spread with #calendar-2024-09 and the per-flag report shows the combined picture.

Choose the right direction at creation; flipping it later recomputes P&L and can confuse historical reports.

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