# Starbloom Capital

Starbloom Capital is an Asset Manager based in San Francisco, United States.

## Overview

- **Organization type:** Asset Manager
- **Headquarters:** San Francisco, United States
- **Region:** North America
- **Address:** San Francisco, CA, United States
- **Founded:** 2021
- **Assets under management:** Undisclosed
- **Website:** starbloom.capital
- **LinkedIn:** https://www.linkedin.com/company/starbloom-capital

## Regulatory record

- **Reports private funds:** No

## About

Starbloom Capital is an investment firm founded in 2021 in New York, New York. It focuses on deep tech innovations across various sectors, primarily serving the deep tech industry. The company has made 14 investments, including a Seed VC in 0xbow on November 18, 2025.

## Sectors

- Blockchain & Digital Assets
- AI/ML
- Longevity Science
- Enterprise Software

## Offices

- Austin, TX, United States

## People

- James Fickel — Founder and Managing Director

## Questions

### How did James Fickel generate the capital for Starbloom Capital?

Fickel's capital base was generated through early and substantial accumulation of Ethereum during the asset's formative years. While the exact basis and holding period are not publicly disclosed, on-chain records and industry reporting consistently identify Fickel as one of the earliest and largest individual Ethereum holders, and that position forms the permanent capital backing Starbloom's venture activities.

### What is the relationship between Starbloom Capital and the Amaranth Foundation?

Both are vehicles of James Fickel. Starbloom Capital is the for-profit investment arm, while the Amaranth Foundation is a philanthropic entity that funds high-risk scientific research, notably at Harvard geneticist George Church's lab. The foundation does not invest for financial return; it makes grants. However, the entities operate with overlapping intellectual interests, and startups emerging from Church's lab have occasionally entered Starbloom's venture portfolio.

### Who co-invests alongside Starbloom Capital?

Vitalik Buterin has co-invested with Starbloom in at least one known deal: privacy infrastructure startup 0xbow. Other co-investors have not been systematically disclosed. The firm's network is concentrated in the Ethereum developer community and the Church lab biotech ecosystem, and those relationships serve as sourcing and syndication channels.

### How does the Austin office fit into Starbloom's strategy?

The Austin office at 100 Congress Avenue reflects the broader migration of technical talent and family office capital toward Texas during the early 2020s. It provides a secondary base outside San Francisco and positions the firm closer to the growing Texas crypto and biotech clusters, though the specific operational split between the two offices has not been publicly detailed.

## Related profiles

- [Star Accelerator Fund](https://altss.com/profile/star-accelerator-fund)
- [Starboard Star Venture Capital](https://altss.com/profile/starboard-star-venture-capital)

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Last updated: 2026-06-03T20:00:00.000Z

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