Methodology and formula notes
Cash-flow-adjusted statement change = ending value + total distributions − additional premium − beginning value. For this example: $258,000 + $10,000 − $0 − $250,000 = +$18,000.
The percentage divides that change by beginning value. It is not time-weighted or dollar-weighted performance. Income received is already a subset of total distributions and is not added twice. Disclosed charges are shown as user-reported context and are not added back because statement values are treated as net.