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Stock maximum drawdown calculator

Measure the deepest historical fall from a previous closing high for any covered US stock or ETF. The calculator identifies the peak, trough, recovery date, and total time spent below the old high.

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How this is calculated

Measured on split-adjusted closing prices, so a split is not mistaken for a crash. Depth is the largest fall from a running high-water mark to a subsequent low; recovery is the first session that closes at or above that old high. Closing prices only: intraday lows contain bad ticks — the 2010 flash crash printed some stocks at a cent — which would produce a fictional -99% decline. Every figure is computed on the full daily series, never on the downsampled curve that is drawn.

The heaviest horizontal line on the chart marks the previous all-time high.

What this calculator shows

Peak-to-trough depth
Drawdown is measured from each running high to the lowest later close.
Recovery time
Recovery is the first later session that closes at or above the previous high.
Split-aware history
Prices are adjusted for splits before measuring declines, so a split is not treated as a crash.