portfolio

Investing in Poseidon

The first generation of AI foundation models were trained on what seemed to be an effectively unlimited resource: data. Today, the most accessible resources such as books and websites have mostly been exhausted, and data has become a limiting factor in AI progress. Much of the data that remains now is either lower quality or...

Investing in Catena Labs

We’re at the beginning of a new era in computing. AI agents are becoming more than just tools that analyze data or generate content — they’re turning into autonomous software actors. These agents can log into services, move money, hire experts, and negotiate contracts. But there’s a problem: our current financial infrastructure wasn’t built for...

Investing in Halliday

The experience of building on blockchains is often more comparable to designing hardware than writing software. Developers spend months building meticulously auditing before “taping out” a smart contract etched in stone. Upgrades demand large-scale coordination and manual migrations, leading to slow iteration cycles and minimal flexibility to swap in new components on the fly. Halliday...

Any investments or portfolio companies mentioned, referred to, or described on this page are not representative of all investments in vehicles managed by a16z and there can be no assurance that the investments will be profitable or that other investments made in the future will have similar characteristics or results. Exits include current and former a16z portfolio companies which have been acquired as well as companies which have undergone an initial public offering or direct public offering of shares. Certain publicly traded companies on this list may still be held in Andreessen Horowitz funds. A list of investments made by funds managed by a16z is available here: https://a16z.com/investment-list/. Additionally investments that have participated in a16z accelerator programs can also be found https://speedrun.a16z.com/companies/. Excluded from this list are investments for which the issuer has not provided permission for a16z to disclose publicly as well as unannounced investments in publicly traded digital assets. Further, the list of investments is updated monthly and as such may not reflect most recent a16z investments. Past results of Andreessen Horowitz’s investments, pooled investment vehicles, or investment strategies are not necessarily indicative of future results.