AI is reviving tech sectors that VCs had all but forgotten

AI isn’t just minting frontier model labs, it’s dragging forgotten venture sectors back into the game.

Healthtech, cybersecurity, biotech, and enterprise SaaS all saw a decisive pickup in early-stage activity in Q4 2025, driven by AI-native startups that look very different from the last cycle’s darlings, according to PitchBook’s latest Emerging Tech Indicator (ETI), which tracks pre-seed through Series B deals done by the top 15 VC firms globally.​

Healthtech is the clearest example of the shift. Health and wellness deals jumped to $678 million across 23 transactions in Q4, more than double the previous eight-quarter average of $332 million and 16 deals. The money is flowing into two buckets: consumer-facing “know your body” platforms and AI tools that make providers’ operations more efficient.​

Function Health, a subscription service that gives members access to a battery of lab tests and personalized insights, raised a $300 million Series B at a $2.5 billion valuation—an 11.5x step-up from its........

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