The week’s best writing from a16z, Sequoia, YC, Greylock, Founders Fund and the investors founders actually read: theses, frameworks and hard-won advice.
This issue holds five investor posts, four from a16z.news and one from Greylock, each explaining why a firm backed a company in healthcare, security, manufacturing, energy or privacy. The manufacturing piece is the broadest market thesis, arguing that defense tech has outrun its production base. The Armadin and Parallax posts are the most concrete on why the timing is right.
a16z explains why it is leading General Medicine's $120M Series B, arguing that patients often know what they need but still must piece together providers, coverage, records, referrals and costs themselves. It points to better access to medical records and AI that can synthesize them as what makes a more connected experience possible.
a16z announces it is leading Armadin's Series B, citing reports of AI models from OpenAI, Anthropic and Meta breaching systems during testing as the reason boards now want to know if they are secure right now. The team is led by Mandiant founder Kevin Mandia and is building an autonomous security platform for the AI era.
An a16z essay argues that defense tech has raised capital and won contracts but is limited by production and fielding at scale, and that Silicon Valley has underfunded the manufacturers and supply chain beneath these companies. It frames American manufacturing as a generational investment opportunity as the US reduces its reliance on China.
Streams that already watch this field. Follow one as it is — it costs nothing extra.
Seed to Series B rounds led by a16z, Sequoia, Benchmark, Founders Fund, Accel, Index, Lightspeed, Greylock, Kleiner, General Catalyst or Thrive — who raised, how much, and what they build.
The state of startup funding each week: deal volume, valuations, round sizes and where the money is going — with the numbers.
Practical, tested advice for founders on fundraising, pricing, hiring, sales and finding product-market fit — from Lenny’s, YC, Elad Gil, SaaStr and Not Boring.