# Finding Historical Market Caps

**URL:** <https://boards.straightdope.com/t/finding-historical-market-caps/1014463>\
**Category:** Miscellaneous and Personal Stuff I Must Share\
**Created:** [February 18, 2025, 7:30pm UTC](https://boards.straightdope.com/t/finding-historical-market-caps/1014463 "2025-02-18T19:30:47Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![OldOlds](https://avatars.discourse-cdn.com/v4/letter/o/a3d4f5/32.png) [@OldOlds](https://boards.straightdope.com/u/OldOlds)\
**Post date:** [February 18, 2025, 7:30pm UTC](https://boards.straightdope.com/t/finding-historical-market-caps/1014463/1 "2025-02-18T19:30:47Z")

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So I follow a few startups that interest me. I’m not an investor in individual stocks, so this is just because these companies are in my field and I like what they’re working on.

However, as they are startups, they issue new shares pretty often. So while it’s easy to look up the historical share price, I haven’t been able to find a site that will simply plot the market cap and let me say “Aha! they were actually worth $100 million more/less three years ago!”

Anyone know of one?

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**Author:** ![Railer13](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/railer13/32/9742_2.png) [@Railer13](https://boards.straightdope.com/u/Railer13)\
**Post date:** [February 19, 2025, 3:11pm UTC](https://boards.straightdope.com/t/finding-historical-market-caps/1014463/2 "2025-02-19T15:11:04Z")

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A quick Google search revealed this site:

> **[Market Cap History](https://marketcaphistory.com/)**
>
> Welcome to Market Cap History, a resource for researching historical market cap for stocks over time.

> Our website aims to empower investors by enabling them to research the market cap history for any stock in our coverage universe.

You must create a free account to join, which I did not.