About Watchtower Management Group

Watchtower Management Group, LLC is a single-family office for the Heising-Simons family and is based in San Francisco. Watchtower invests in hedge funds for the benefit of charitable and other organizations associated with the Heising-Simons family, including the Heising-Simons Foundation.

Investment Approach

Our primary objective is to build a multi-strategy portfolio of hedge funds that generates attractive risk-adjusted returns over time with limited volatility and correlation to the broader equity and debt markets, and which protects and preserves our capital in difficult markets. We take a long-term view when committing to managers.


Investment Focus

Watchtower invests globally and actively pursues investments in a range of hedge fund strategies, including:

Several key factors that we consider include:

Contact Us

Watchtower does not invest in private equity, venture capital or real estate funds. For more information regarding the Simons family’s private equity, venture capital and real estate investment program, please visit the Medley Partners LLC website.


The Heising-Simons Foundation works with its many partners to advance sustainable solutions in climate and clean energy, enable groundbreaking research in science, enhance the education of our youngest learners, and support human rights for all people. The foundation is based in Los Altos, California, and was established by Liz Simons and Mark Heising, who are joined on the board by their daughter, Caitlin Heising. To learn more, visit heisingsimons.org.