Arianna Simpson

General Partner, a16z
Arianna Simpson put her savings into Bitcoin after witnessing Zimbabwe hyperinflation, self‑taught from the white paper, turned a multisig blog into a BitGo role, and spent a decade building crypto.
How to contact Arianna Simpson
Stages their fund invests in
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Sectors their fund invests in
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Avg Check
$500K - $100M
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Does their fund Lead?
Yes
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Geos their fund invests in
Asia-Pacific, USA
Arianna Simpson
Stages their fund invests in
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Sectors their fund invests in
AI
Defense
Biotech
Consumer
Web3 / Crypto
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$500K - $100M
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Leads?
Yes
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About Arianna Simpson

Arianna Simpson put essentially all of her savings into Bitcoin at age 22 after witnessing hyperinflation in Zimbabwe, then taught herself from the Bitcoin white paper and moved into crypto full-time, spending over a decade focused solely on the space through multiple boom-and-bust cycles. She founded Autonomous Partners, an early dedicated crypto fund, after being among the first employees at BitGo (employee #3) when her technical blog post on multisignature wallets caught the founders' attention, showing a pattern of creating new roles at the frontier of emerging categories rather than joining existing platforms.

Arianna Simpson's Interests

What they've been talking about across their social media accounts
  • Strong belief in the practical utility of stablecoins and the modernization of global money. She cites personal experiences traveling through Zimbabwe, where she witnessed inflation destroying savings, as a primary motivation for backing technologies that make currencies accessible and functional, calling the current market environment a stablecoin supercycle.
  • Interest in the intersection of artificial intelligence and human curation. She suggests that in a future where AI generates infinite content, having excellent taste becomes the key differentiator for success, and she is actively seeking developers building autonomous agents that can use crypto to purchase goods and services on a user's behalf.
  • Emphasis on product design and user experience as competitive moats. She praises teams like the creators of the Phantom wallet for their obsession with detail and ability to build clean, seamless interfaces that stand out in a crowded, noisy industry.
  • Operational guidance regarding the dangers of premature scaling. She warns founders against the fallacy that adding more people automatically results in higher velocity, arguing that increased headcount often causes communication breakdowns that actually slow a company down.
  • Appreciation for founders who demonstrate high intelligence combined with low ego. She looks for entrepreneurs with raw horsepower who are obsessed with their specific market, highlighting how impressive it is when founders can evolve a company from a simple pitch deck into a robust institutional powerhouse like Talos.

About their Fund

Sectors
AI, Defense, Biotech, Consumer, Web3 / Crypto
Rounds
Seed - Series B+
Avg Check Size
$500K - $100M

Andreessen Horowitz built a 150+ person operating platform providing recruiting, marketing, and technical support to portfolio companies, and transitioned from a traditional venture fund to a Registered Investment Advisor to make aggressive crypto investments and buy illiquid assets. The firm explicitly positions itself as "a media company now" that produces podcasts and research to capture founder mindshare, while using unusually large fund sizes to lead mega-rounds backing controversial, highly ambitious visions in frontier technology.

Other partners at the fund
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