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Lots and cost basis

Each buy opens a lot with a date, share count, and cost. The cost-basis method is set per holding: FIFO, average cost, or specific lot. FIFO uses the oldest open lot. Average cost spreads a sale across open lots. Specific lot asks you to assign every share in the sell dialog and shows realized gain before save.

Steps

  1. Open Portfolio and choose the account.
  2. Choose the security and set Cost basis.
  3. Record a sell. For specific lot, fill every lot so the shares add up, then read the gain preview.

Open Reports → the realized-gains page for short-term and long-term rows after a sale.

If this goes wrong

If a sale is blocked, the allocation does not match the shares sold. Add the missing lot amounts. Basis stays on the lot until those shares close.

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