Jan Hammer is an investor at Index Ventures focused on data and financial services, with early investments in Adyen, Robinhood, and Wise. He joined Index in 2010 after roles at General Atlantic and Morgan Stanley.
What Jan can write
Index Ventures writes $10M to $30M+ checks, larger than 97% of firms in the atlas.
Bars: how many firms report each check band. Highlighted: Index Ventures.Career
- Morgan Stanley · investment banker
- General Atlantic · investor
- IndexNow
- Index Ventures · PartnerNow
Investments named in public bios
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Education
Also at Index Ventures
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At firms with a similar stage, sector and check size.
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One email when Jan's firm raises a fund, adds a partner or shows new activity.
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Raising a pre-seed or seed round? We write $1M to $5M first checks and help founders with distribution. A partner reads every deck.
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Who is Jan Hammer?
Jan Hammer is an investor at Index Ventures focused on data and financial services, with early investments in Adyen, Robinhood, and Wise. He joined Index in 2010 after roles at General Atlantic and Morgan Stanley.
How much does Jan Hammer invest?
Jan Hammer invests through Index Ventures, which writes checks of $10M to $30M+ at seed, series a, series b.
How do I pitch Jan Hammer?
Email [email protected], the firm's inbox for founders, and name Jan in the subject. A warm intro from a founder Index Ventures backed works better.
What did Jan Hammer do before Index Ventures?
investment banker at Morgan Stanley; investor at General Atlantic.
Last updated 2026-10-15. Is this you? Ask for a correction.