Backtests
What if you'd copied them?
Interactive backtests of the world's best investors. Drag a year, drop in a dollar amount, see what would have happened.
1999-2025
Warren Buffett
Berkshire Hathaway
The Oracle of Omaha. Compound interest's loudest fan.
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2014-2025
Bill Ackman
Pershing Square
Concentrated, activist, sometimes brilliant, sometimes humbling.
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2010-2025
Stanley Druckenmiller
Duquesne Family Office
30+ years without a losing year.
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2010-2025
Seth Klarman
Baupost Group
Margin of safety. 30% cash positions.
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2013-2025
Michael Burry
Scion Asset Management
The Big Short. Volatile contrarian swings.
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Deep dive
Reading for your research
Optional background reading on interpreting company disclosures and investing methods. These books do not validate a signal or predict returns.
Amazon affiliate links — as an Amazon Associate, HoldLens earns from qualifying purchases and membership trials at no extra cost to you. These are books we genuinely recommend. Not investment advice; always do your own research.
Benjamin Graham
The Intelligent Investor
The foundational text. Buffett calls it 'by far the best book about investing ever written.'
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Benjamin Graham & David Dodd
Security Analysis
The deep dive behind The Intelligent Investor — how to actually read a filing and value a business.
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See the full investing reading list
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