United States · 
Who invested in Highstock?
Highstock's investors include Greylock, Andreessen Horowitz, Abstract Ventures, Lenny Rachitsky and Max Mullen, and 2 more on record. Andreessen Horowitz led its latest round.
20252026
$5.5MSeed$30MSeries A
United States · Series A startup
Who invested in Highstock
2 rounds we have observed, with the 7 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.
Raised 2 months ago
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Funding summaryUpdated 5 Nov 2026
$36Mraised across 2 rounds since 2025, from 2 sources
$5.5MSeed$30MSeries A
- Latest round
- Series A, $30MSept 2026
- Led by
- Andreessen Horowitz
- Step-upi
- 5.5×
- Investors
- 7 (1 led)
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Seed, $5.5M Feb 2025
- Biggest round
- $30M Series A · Sept 2026
- Between rounds
- 19 months from the last two
The rounds
- Sept 2026Series A$30M6 new1 returning
Reported by AlleyWatch
- Feb 2025
Who was in which round
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
Everyone who backed them
JJ ZhuangVC firm1round
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Quick answers about Highstock
How much has Highstock raised?
Highstock has raised $36M across 2 rounds since 2025.
When did Highstock last raise?
Highstock's most recent round was a Series A of $30M in Sept 2026, led by Andreessen Horowitz.
What was Highstock's biggest round?
Its most recent round, $30M in Sept 2026, is also its largest on record.
Who backed Highstock first?
Highstock's first round on record, in Feb 2025, was backed by Greylock.
What stage is Highstock at?
Highstock's latest named round is a Series A, in Sept 2026.
Where is Highstock based?
Highstock is based in the United States.
Who led Highstock's rounds?
Andreessen Horowitz led the Series A in 2026.
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