# FiftySix Investments

FiftySix Investments is a Private Equity based in Silicon Valley, United States.

## Overview

- **Organization type:** Private Equity
- **Headquarters:** Silicon Valley, United States
- **Region:** North America
- **Address:** Silicon Valley, CA, United States
- **Founded:** 2014
- **Assets under management:** Undisclosed
- **Website:** rayrothrock.com

## Regulatory record

- **Reports private funds:** No

## About

FiftySix Investments is a seed fund focused on cyber, energy, and climate entrepreneurs. With seed capital, Rothrock often assists these entrepreneurs with their Series A pitch, early strategy, and access to the extensive venture capital network. To date, FiftySix has seed positions in over fifty companies.

## Sectors

- Cybersecurity
- Energy Transition & Renewables
- ClimateTech

## People

- Ray Rothrock — Managing Partner

## Questions

### Who runs investment decisions at FiftySix Investments?

Ray Rothrock makes all investment decisions. He sources deals, structures seed rounds, and personally coaches founders on their Series A narratives. The firm does not employ an investment committee beyond Rothrock himself.

### How does FiftySix Investments source proprietary deal flow?

Rothrock leverages a network built over three decades: his Venrock alumni connections, his directorships at Check Point Software Technologies and Roku, and his nuclear-energy advocacy work through organizations like the Nuclear Threat Initiative and Terra Praxis. Many founders reach him through the cybersecurity and advanced-reactor policy community rather than traditional venture channels.

### What investment stages does FiftySix target?

The firm deploys at the seed stage exclusively. Rothrock's pattern is to enter early enough to influence company formation, then help the founding team refine their pitch and syndicate for a Series A round. He does not lead later-stage rounds nor participate in growth equity.

### What is Rothrock's posture on co-investments alongside external venture firms?

Rothrock actively syndicates. His biography notes he assists entrepreneurs with access to his extensive venture capital network, and his role as a venture partner at Shield Capital positions him to route follow-on capital to portfolio companies. He participates in LP advisory committees for other venture firms.

### Does FiftySix participate in fund commitments or only direct deals?

The disclosed activity shows exclusively direct seed investments. While Rothrock sits on LP advisory committees for other venture firms, FiftySix is not described as committing capital to external funds as a limited partner.

## Related profiles

- [Fifty Fifth Capital](https://altss.com/profile/fifty-fifth-capital)
- [Fifty Years](https://altss.com/profile/fifty-years)

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Last updated: 2026-08-11T15:06:42.396Z

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