For the outliers building what comes next.

Early partners for those rearchitecting the systems behind modern enterprise — infrastructure, automation, decision-making.

Investment Thesis

Act One Ventures invests in extraordinary founders transforming how modern businesses operate and scale in the AI economy.

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Industry

We invest in companies that are building the next generation of enterprise platforms using AI-native systems with strong data leverage, deep automation, and a clear wedge into critical workflows. AI isn’t just another wave of software, it’s a new computing paradigm. Like the microprocessor or the internet, it rewrites what’s possible. The core systems that run business — infrastructure, compliance, workflows, and intelligence — are being rebuilt from the ground up.

Stage

We lead at pre-Seed and Seed. We invest with conviction — not consensus — in extraordinary, outlier founders.

Check Size

We invest $1M-$3M into an average of 7 new companies per year. That means fewer bets, deeper relationships, and alignment through the bumpy ride to finding product-market fit and scale.

By the numbers

Years in operation

Companies we've backed

60+

Capital we've raised

$148M

Number of exits

HOW we Work

We Bring Founding Experience

We approach company building as a craft, not a one-size-fits-all playbook. We offer clear, actionable advice; make the right customer introductions; and stay out of your way so you can focus on execution.

We Lead with Trust

Our role goes beyond the check. With a team of deeply experienced advisors across finance, GTM, team design, technology, and capital strategy, we help founders navigate the key decisions that matter early. When things get hard — and they always do — we want to be your first call at any hour of the day or night.

We Build Around Founder Insight

We look for founders who’ve lived the problem — people who’ve spent years in their industry and understand where legacy systems fall short. We don’t need to teach you your market. We’re here to help you build a company around your existing insight.

We Deliver an Engaged Community Eager to Help

Our advisors and many of our LPs are experienced entrepreneurs and operators who are eager to support our founders by opening doors, giving feedback, and connecting you to customers.

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our portfolio

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News

GAIL: Why We Invested

AI is reshaping industries at an unprecedented pace, and financial services is no exception. Banks and insurers are under pressure to improve efficiency, cut costs, and enhance customer experiences — all while maintaining regulatory compliance. That’s why we’re excited to announce that we led the Seed round for GAIL, a Voice AI platform redefining how financial institutions interact with their customers, particularly within debt collections.

FOUNDER TESTIMONIALS

Hear from our rising stars

The Act One team really brought a level of operational experience that was truly valuable through the stage of scaling the business as well as the financing process. They play a valuable role in helping to navigate the challenges that come with building a world-class SaaS company and also bring an incredible network of people and resources.

Daniel Kim

Co-Founder of AuditBoard

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60% of our companies

go on to raise Series B & C from the biggest firms

From Kim Stiefel, Founder of Repeat

"In a word, Act One is great. They are very supportive beyond capital — specifically, thinking through challenges and helping with introductions."

As a Latino technical founder, I hear a lot about how important diversity is in the workplace, but it is still rare to see it actually happen. Their commitment to investing in minority-created companies and putting together their own team of diverse LPs and advisors was a big part of my decision and I couldn’t be happier about having them as part of our journey.

Richie Serna

Co-Founder/CEO of Finix

Meet Our Team