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.

Granite Alpha employs a concentrated long/short equity strategy focused on event-driven and special-situations catalysts. The firm targets mergers and acquisitions, spin-offs, balance-sheet restructurings, activist campaigns, and management changes that it believes will unlock value. Portfolio construction emphasizes high conviction, with a likely position count between 15 and 35 names to ensure each investment benefits from deep fundamental research.

Granite Alpha's concentrated mandate and capacity-constrained model allow it to pursue smaller event-driven situations that would be immaterial to larger platforms like its founder's former firm, Farallon. Mid-cap merger arbitrage spreads, small-cap distressed exchanges, and carve-out situations often have position-size limits that penalize multibillion-dollar funds. Granite Alpha's smaller capital base means these opportunities can meaningfully impact returns, and its single-manager structure concentrates research and decision-making on the most complex catalyst situations.

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.

Granite Alpha is structured as a hedge fund manager, not a single-family office. It is registered as an investment adviser with the State of California and operates as a limited partnership managing external investor capital. While its concentrated, conviction-heavy portfolio construction shares some characteristics with sophisticated family offices, the firm's regulatory posture, fee model, and external capital base confirm its status as an independent investment manager.