March Capital is a Santa Monica–based technology growth-investment firm founded in 2014 by Jamie Montgomery, Jed Leidheiser, Sumant Mandal, and James Fitzpatrick, focused on early- and growth-stage investments across enterprise software, AI infrastructure, cybersecurity, gaming, and fintech.
The firm positions itself as hands-on with founders during the company-building phase, with a portfolio that has included CrowdStrike, KnowBe4, Robinhood, Mythical Games, ASAPP, Marqeta, Anyscale, and Snorkel AI among others, alongside continued investments into AI-native infrastructure and applied-AI category leaders. March operates as both an early-stage seed investor and a multi-stage growth firm depending on the company, and has remained anchored in Southern California even as its portfolio has gone global.