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Build a total-return measurement boundary

A return calculation needs a defined starting capital base, ending value, income treatment and transfer timing.

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Write what the values include

Suppose a security starts at 100, ends at 103 and pays 4 in income at the end. The price gain is 3, while total gain including that distribution is 7. If the ending account value already contains the income as cash, adding 4 again would count the same income twice.

Separate a receipt from added capital

A dividend generated by the investment and a deposit supplied by its owner can both appear as cash credits. They play different roles in a performance calculation. Classify the transaction from its economic source instead of identifying every positive ledger entry as investment income.

Original measurement boundary
RecordQuestion
Starting valueWhich assets and cash belong to the base?
Ending valueIs distributed income already included?
External transfersWhen did the owner add or remove capital?
CostsWhich charges are included in the value?

Retain actual dates

An endpoint change over three months is a holding-period return. Converting it to an annual rate changes the rate description, not the observed holding period. Missing dates can therefore prevent a meaningful annualization even when endpoint values are known.

Report the chosen result

A useful statement names total or price return, the period, the external-flow method and the currency. It does not imply tax treatment or future repeatability. These original cases deliberately use supplied fictional data rather than a market performance claim.

Further references