Heavybit, the leading enterprise infrastructure investor, today announces the close of its fifth flagship pre-seed and seed fund alongside its second opportunity fund. At over $180 million combined between the two funds, its largest collective raise to date, Heavybit expands on its Day-0 support for exceptional founders reshaping the modern software stack.
For over a decade, Heavybit has backed and partnered with talented technical founders behind category-defining companies like Tailscale, LaunchDarkly, and PagerDuty as well as emerging leaders like Groundcover, LocalStack, Unikraft, and Continue. With more than 80 companies in the portfolio that have raised over $5 billion in funding, Heavybit seeks to invest in teams building AI-native solutions across infrastructure, security, and enterprise software.
Heavybit invests at the earliest stages, leading pre-seed and seed rounds with checks of $500,000 to $5 million and backing start-ups around the world with a portfolio that spans 47 cities across 15 countries. Beyond capital, founders gain access to a global network of 1,000+ expert advisors, an experienced platform team, and a partnership with deep domain expertise that together provide tailored, hands-on support to accelerate their go-to-market and scale effectively.
“Heavybit was the only investor who actually understood what we were building, and they even helped us figure out the business model,” says Avery Pennarun, co-founder and CEO of networking leader Tailscale. “Turns out, they got it exactly right. Since then, they’ve kept showing up with advice that’s both strategic and industry specific. It’s rare to find folks who can zoom in and out like that and be useful at both ends.”
“Founders don’t need clichés. They need real talk from people who have done the work,” says Tom Drummond, founder and managing director at Heavybit. “We help them navigate critical inflection points with guidance that is grounded in experience and tailored to the moment.”
For startups, receiving in-depth support informed by real-world experience is more important than ever. Distribution is faster, markets are noisier, and AI is rewriting the playbook on how to run a software company in real time.
“When we run into a blocker, Heavybit doesn’t just cheer from the sidelines, they help us trudge right through the thick of it,” says Tyler Dunn, co-founder and chief product officer of rapidly growing AI startup Continue.
The Future of Software: Free, Continuous, Everywhere
As AI accelerates everything, Heavybit sees a future of software maximalism. Software is becoming increasingly pervasive, customizable, and scalable, from personal use up to the enterprise.
“We’re entering a future where software is everywhere, created faster, by more people, for more people than ever,” says Joseph Ruscio, general partner at Heavybit. “The approaching revolution will dwarf the miniaturization of the supercomputer. There will be an even greater need for new and evolving infrastructure. As high-conviction investors, we believe that the founders building tomorrow’s infrastructure will have an even greater need for more support that is strategic and customized for their startups.”
Even as the technology landscape shifts, Heavybit will seek to continue to scale up its investments in exciting, early-stage technical startups. The firm will also use its expanded opportunity fund to double down on existing portfolio companies.
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