# Granite Alpha Capital Management

Granite Alpha Capital Management is an Asset Manager based in Boston, United States.

## Overview

- **Organization type:** Asset Manager
- **Headquarters:** Boston, United States
- **Region:** North America
- **Address:** San Francisco, CA, United States
- **Founded:** 2016
- **Assets under management:** Undisclosed
- **Website:** granitealphacapital.com

## Regulatory record

- **CRD number:** 326314
- **SEC file number:** 802-128008
- **Registration status:** Registered
- **Reports private funds:** Yes
- **IAPD record:** https://adviserinfo.sec.gov/firm/summary/326314

## About

Granite Alpha Capital Management, LP is an exempt reporting adviser in Boston, MA. It is a limited partnership.

## Sectors

- Hedge Funds
- Event-Driven & Special Situations

## People

- Katherine O'Brien — Managing Partner & Chief Investment Officer

## Questions

### Who runs investment decisions at Granite Alpha Capital Management?

Katherine O'Brien serves as Managing Partner and Chief Investment Officer and is responsible for all portfolio decisions. She previously worked at Farallon Capital Management, the $40 billion multi-strategy hedge fund, where she specialized in event-driven equity strategies before launching Granite Alpha in 2016. The firm operates as a single-manager investment adviser with a concentrated decision-making process.

### What is Granite Alpha's known posture on co-investments alongside external managers?

Granite Alpha operates as an independent hedge fund manager rather than a co-investment club or platform, and its concentrated strategy is built around proprietary idea generation and execution. There is no public indication that the firm participates in co-investment arrangements alongside external general partners. The firm's focus remains on building high-conviction public-equity positions where its catalyst-driven framework provides an analytical edge independent of co-investor alignment.

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Last updated: 2026-08-14T12:30:00.000Z

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