Joe Horowitz is the Managing General Partner and founder of Icon Ventures. See sector focus and contact routes.
Joe Horowitz is the Managing General Partner and founder of Icon Ventures, a Palo Alto-based venture capital firm he established in 2003 that has grown from $100 million to $1.4 billion in assets under management. He previously spent 10 years at U.S. Venture Partners, where his first deal was the seed financing of Sun Microsystems. Horowitz leads Series B and C financings primarily in enterprise technology, cybersecurity, digital health, and AI, with a focus on Silicon Valley geographies. While specific check sizes are not publicly detailed, he typically leads these mid-stage rounds rather than following. His notable portfolio includes publicly traded companies such as FireEye, Palo Alto Networks, and Proofpoint, alongside current board involvement at Playstudios and Synack. Horowitz is an active member of the National Venture Capital Association Alumni Council and posts on Twitter as @JoetheVC, though no distinctive public writing or unique investment thesis beyond his sector focus has been documented.
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