Observed arrival · 2026-09-30
Underfolio’s market-history lab—and its stock graveyard
A market-history tool for exploring past market situations and stock performance, with a daily blind test using historical prices.
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✦Pretty
●Pro
◎Niche
◉Human
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ƒJS
- For
- People exploring market history and historical stock performance
- Worth noticing
- The Graveyard names 5,000 of the biggest U.S. stocks that stopped trading; broader chart coverage says about 28,000.
Field notes
The homepage links to separate Market Lab and chart lab sections, a daily blind test, and an explanation of how the numbers are made. It describes coverage of U.S.-listed stocks from 1968 onward, with some histories reaching back to 1962, and says the broader dataset includes about 28,000 stocks that stopped trading. Those coverage figures are presented by the site and are not independently verifiable from this extract.
Observed signals
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
$PaidCommerce or pricing visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
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