Guides

Plain explanations of the numbers this tracker computes, and why the obvious way of reading them is usually the wrong one.

• What return did my DeGiro portfolio actually make?

  Why current value minus what you've put in is not your return, and what a real one needs once you've made more than one deposit.

• TWR vs XIRR: two different questions, two different answers

  Time-weighted and money-weighted return measure different things and can legitimately disagree — a worked example with real numbers shows why, and which one you actually want.

• DeGiro vs the S&P 500 or MSCI World: comparing fairly

  “The S&P 500 was up 18% and I was up 12%” compares two different things unless your money went into the index on the same dates it went into your account.