United States · 
What does Triatomic Capital invest in?
Triatomic Capital invests most often at Series B and Series C (100% of the rounds on record), in sectors such as Med Device, Diagnostics and Therapy.
Triatomic Capital highlights
- 01
2 cheques in the last 12 months
- 02
Mostly Series B and Series C: 100% of its rounds
- 03
Led 1 rounds
What they do
Triatomic Capital is a research-driven venture firm that invests in transformative technology companies from their earliest stages.From their own website
- Type
- Private equity (from a list, unverified)
- Cheque size
- $250K – $25M as they say
- Stages
- SeedSeries ASeries B
- Sectors
- Med DeviceDiagnosticsTherapy
- Based in
- Palo Alto, United States
- Cold pitches
- Not stated
The record
Every round we can evidence, newest first2 appearances
- 2026
1 round
- Sept
- 2025
1 round
- Nov
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.
The team
Named by the firm itself, on a filing, its Form ADV or its company registration5 named
JMJeffrey Mason SauerhoffChief Financial OfficeriForm ADV
JTJeffrey Terrence HuberManaging PartneriForm ADV
NBNicholas BourqueChief Compliance OfficeriForm ADV
SISteven I (mio) HochbergManaging PartneriForm ADV
X(Xiaotong (Peter) ZhouChief Executive Officer / Limited PartneriForm ADV
We also hold 5 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.
What the register says
From the firm's own filings with the SEC, which it must file accurately by law
$346Massets it managesOct 2026
Registeredinvestment adviserfull reporting to the SEC
- Legal name
- Triatomic Management LP
- SEC number
- CRD 312408
Funds on its Form ADV
7 private funds, $182M in gross assets · filed Nov 2024
Special purpose vehicle 5Private equity 1Hedge 1
- Triatomic Capital Private I L.P.Private equity40 investors$131M
- Triatomic Capital Hybrid Master L.P.Hedge2 investors$38M
- Triatomic Opportunity Fund I L.P.Special purpose vehicle10 investors$4.2M
- Hongkou Opportunity Fund II L.P.Special purpose vehicle22 investors$4.0M
- Triatomic Opportunity Fund III L.P.Special purpose vehicle6 investors$2.0M
- Hongkou Opportunity Fund III L.P.Special purpose vehicle6 investors$1.4M
- Hongkou Opportunity Fund V L.P.Special purpose vehicle6 investors$800K
What they claim to have backed
From their own portfolio page (on their website)
9 of 14 we have independently watched raise
01 Atum Works03 Chalk04 Chemify06 d-Matrix07 Edison Scientific10 Gimlet Labs11 iPronics12 Lyten15 Radical Numerics02 Axiom05 Coworker09 Elegen13 ManifoldEfficient
Weaker than a round we watched, stronger than a list somebody sold us. A firm is far less willing to put a company on its own site that it never funded.