Portfolio

Each trading day's values are calculated using historical closing prices from Alpaca:

Portfolio Value

Sum of (shares held × closing price) for each position on that date

Cost Basis

Total purchase cost of all shares held on that date (using actual buy prices)

Unrealized P/L

Portfolio Value − Cost Basis (paper gains/losses on open positions)

Realized P/L

Cumulative gains/losses from all sales completed up to that date

Net Gain

Unrealized + Realized (total profit/loss as of that date)

The row marked with ★ PEAK shows the day with the highest Net Gain, used for performance fee calculation (30% of peak).