What does Pioneer Fund invest in?
Pioneer Fund invests most often at Series A and Pre-seed (100% of the rounds on record), in sectors such as AI & Machine Learning, Artificial Intelligence & Machine Learning (AI/ML) and Construction Tech.

United States · Investor
Last cheque observed Jul 2026; 4 cheques on record.
VC firmDeploying nowNew fund $5.8M, Jul 2026
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2 cheques in the last 12 months
Mostly Series A and Pre-seed: 100% of its rounds
Every round we can evidence, newest first4 appearances
2 rounds
1 round
1 round
An announcement gives the size of the round, not the size of this investor's cheque: the only rounds that imply a cheque are those where they were the sole named investor.
Named by the firm itself, on a filing, its Form ADV or its company registration3 named
We also hold 158 people at this firm from the lists this database was built from: a weaker source than the filings, since a list does not say when a title ended. Login to see them.
From the firm's own filings with the SEC, which it must file accurately by law
The investors most often in the same rounds as Pioneer Fund. A count of rooms they were both in, not a relationship either has claimed.
The latest companies Pioneer Fund put money into.
Pioneer Fund invests most often at Series A and Pre-seed (100% of the rounds on record), in sectors such as AI & Machine Learning, Artificial Intelligence & Machine Learning (AI/ML) and Construction Tech.
4 investments on record, 2 of them in the last 12 months. The most recent was in Jul 2026.
Its most recent investments on record: Henry AI (Series A, Jul 2026), Fazeshift (Series A, May 2026) and Human.org (Pre-seed, Feb 2025).
The median round it joins is $12M.
Yes: it is actively investing, with 2 investments in the last 12 months.
Most often Y Combinator (2 rounds together).
Pioneer Fund is a VC firm based in Mill Valley, United States.
About $351M, as gross assets of its private funds (Oct 2026).
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Built from the rounds we watched, its filings and its own website, refreshed every night. How we count · Report a correction · Is this your firm? Claim it