Gain is current value minus what the whole holding cost. It is shown only when both are known and in the same currency.
No gain is shown when:
- No price paid was recorded — add one with Edit.
- Some of the holding was added without a price (Partial cost). Enter what everything held cost in total. See Buying more, selling, and fixing counts.
- The value and cost are in different currencies.
The overview's gain covers only items whose whole cost is known, and says over how many.