Investor profile
Coelius Capital
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Coelius Capital is a solo GP venture fund managed by Zach Coelius, a five-time entrepreneur turned investor, built around the philosophy that "Ideas are meaningless. Validated ideas are priceless." The fund invests in differentiated B2B and B2B2C software companies with real product-market fit — specifically seeking founders who can cold-call a customer at 9 PM and get them excited in one sentence. Coelius actively seeks "weird ideas" that create new categories and are tackling novel problems that don't fit existing buckets, before traditional VCs can easily evaluate them. The fund focuses on Enterprise Software, Developer Tools & Infrastructure, FinTech & Payments, and Marketing Technology & Data. It explicitly excludes crypto, Web3, biotech, security, and semiconductor hardware. Zach operates with a minimal-interference philosophy — "I believe that most investors get in the way more than they help" — and uses a 3,000+ AngelList backer community as a diligence engine. With ~$100M deployed across ~80 companies over 10 years, the portfolio includes three unicorns (Mercury, Fireflies, Branch) and notable exits including Cruise Automation (acquired by GM for $1B+).
Notable quotes
“Ideas are meaningless. Validated ideas are priceless.”
“I believe that most investors get in the way more than they help. Having been a founder multiple times and dealt with many investors, my goal is to do no harm.”
“Every good entrepreneur has a great idea. Your idea is worthless. What you want is a validated idea — that means an idea that you've proved works. A good idea with traction can suddenly be very, very interesting.”
Recent investments
| Company | Round | Size | Date |
|---|---|---|---|
| Known (Dating) | Seed | $10m | 2025-11-13 |
| Metaview | Series B | — | 2025-06-25 |
| Smart Access | Series A | $12m | 2026-03-01 |
| Mercury | Seed | — | — |
| Cruise Automation | Seed | — | — |
| Branch Metrics | Seed | — | — |
| Fireflies | Seed | — | — |
| OneSignal | Seed | — | — |
| mParticle | Seed | — | — |
| Booksy | Seed | — | — |
Frequent co-investors
| VC firm | Deals together |
|---|---|
| Y Combinator | 5 |
| Sequoia Capital | 4 |
| Andreessen Horowitz (a16z) | 3 |
| Founders Fund | 3 |
| Tribe Capital | 2 |
| SV Angel | 2 |
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