Andreessen Horowitz

Andreessen Horowitz (a16z) is one of Silicon Valley's most prominent venture capital firms, with major investment positions across AI, crypto, and enterprise software, and — since May 2026 — a defining stake in the defence-technology sector. In the 2026 midterms it has emerged as a significant political actor, contributing to Fairshake (the dominant crypto Super PAC) and backing Leading the Future, the AI Super PAC opposing federal AI regulation that has committed over $100 million to the cycle alongside Greg Brockman and Joe Lonsdale.

In the defence-technology cycle, Andreessen Horowitz co-led Anduril's $5 billion Series H round in May 2026 alongside Thrive Capital, at a $61 billion valuation, against 2025 revenue of $2.2 billion (doubling year-on-year). a16z's Anduril stake gives it a direct financial interest in counter-drone procurement decisions, the US Golden Dome architecture, and the legislative environment governing autonomous weapons systems — all areas where its political spending simultaneously attempts to shape outcomes.

The Firm's political posture reflects its portfolio interests: substantial stakes in both crypto and AI companies that would be affected by the legislation its PAC spending tries to shape. a16z backs the anti-regulatory wing of the AI industry's electoral strategy, in direct competition with Anthropic-backed Public First Action, which favours federal AI oversight. The gap between the two camps is not merely tactical: it reflects a genuine disagreement over whether the AI companies most likely to benefit from permissive policy are the ones best positioned to self-regulate responsibly.