How this is worked out
Portfolio check
Type what you hold. See how each piece behaves, how much the whole mix moves, and what it would have done in the bad stretches.
Or paste a list, one holding per line. A ticker, then the amount in US$. Same ticker twice: the amounts are added. Nothing you type leaves this page.
Your age (optional). Only used to show the common mixes at your age. It stays on this page.
Cash. Money in bank accounts and cash. It counts as no change in the bad stretches and has no swing level.
Your answer in words. Add what you hold: a ticker and an amount in US$ on each line. Nothing you type leaves this page.
Some choices came from your profile.
US inflation 3.4% (August 2026, US Bureau of Labor Statistics)
How every calculator on the site is built, and what changed and when, is on How it works.