But what was *my* return?

Time-Weighted Return ?
Measures the investment's performance without considering the impact of cashflows. This is the pure market return.
Simple Return ?
Calculates the percentage change from your total contributions to final value.
Money-Weighted (XIRR) ?
Calculates the internal rate of return that accounts for the timing and size of all cashflows. This is your actual realized return and is affected by when you add or remove money from the investment.
Cumulative -- -- --
Annualized -- -- --

Add Cashflows