The cloud security founder has quietly assembled a 19-company portfolio focused on AI and cybersecurity, with at least 10 deals in the first half of 2026 alone.
Selling your company for $32 billion tends to free up the calendar. Assaf Rappaport, the co-founder and CEO of cloud security firm Wiz, has used that newfound bandwidth to become one of the most aggressive angel investors in cybersecurity and AI, assembling a portfolio of 19 companies at a pace that would make most venture firms jealous.
Since closing the blockbuster sale of Wiz to Google Cloud, Rappaport has completed at least 10 investments in just the first six months of 2026. The deals span seed rounds to Series C, with a clear thesis: AI applications that make enterprise security smarter, faster, and harder to outmaneuver.
A portfolio taking shape at startup speed #
Rappaport’s most eye-catching move came on June 23, 2026, when he participated in a $98 million Series C round for Engram, a company building what it calls an AI “memory layer” for enterprises. Sequoia Capital and Kleiner Perkins co-led the round.
Engram’s technology tackles adaptive memory management for generative AI systems, helping large language models and other AI tools remember context across sessions and workflows.
Earlier in 2026, Rappaport backed JetStream, an AI-driven cyber defense startup, in a $34 million seed round in March.
His portfolio also includes NewCore, which raised a $50 million Series A in June 2026, and Ocean, which closed a $28 million Series B in May 2026.
From operator to investor, with a thesis #
Wiz reached a $32 billion valuation in its sale to Google Cloud, making it one of the largest cybersecurity acquisitions ever. Rappaport and his co-founders built Wiz from scratch to that valuation in roughly four years.
His investment thesis centers on AI reshaping how organizations detect and respond to threats, identity management and enterprise infrastructure as areas ripe for AI-native rebuilds, and backing these companies while incumbents have yet to copy the technology.
JetStream focuses on autonomous threat mitigation, with AI systems identifying and neutralizing cyber threats without waiting for human approval. Engram addresses the memory problem that limits AI assistants in complex enterprise environments. NewCore and Ocean fit the broader pattern of AI-enhanced security and infrastructure tooling.
What this means for investors watching AI and cybersecurity #
There is no indication of any investment by Rappaport in cryptocurrency or blockchain ventures, solidifying his focus on software-driven solutions within the cybersecurity domain.
Rappaport’s pace of 10 deals in six months signals that the AI-cybersecurity intersection is entering a hot market phase. Valuations at the seed stage are already elevated, as JetStream’s $34 million round demonstrates.
With Google now owning Wiz, the cloud security market’s dynamics have changed. Rappaport’s investments could be seen as him building the next generation of companies that will either complement or compete with his former creation, now operating under the Google Cloud umbrella.
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