The Fund That Only Swings at the Ones It Can Hit

In 1941, Ted Williams walked into the final day of the baseball season with his average sitting just above .400. He could have sat the doubleheader out and rounded up. He played both games, went six-for-eight, and finished at .406 - a number no Major League hitter has matched in more than eighty years. Six decades later, three Boston operators-turned-investors decided that was the right idea to name a venture firm after.

.406 Ventures, founded in 2005, is an early-stage venture capital firm that leads and co-leads seed and Series A rounds in three sectors it claims to understand better than most: cybersecurity, healthcare, and data + AI. The baseball reference is not decoration. Williams was famous for his discipline at the plate - he refused to swing at pitches outside his zone, even with two strikes. The firm reads that as an investing philosophy: only swing at deals where you have a genuine, unfair advantage, and let the rest go by.

What the firm actually does

At its core, .406 is a traditional venture fund. It raises capital from institutional limited partners, deploys it as early-stage equity, and aims to return multiples through acquisitions and public listings. What separates it from a generalist fund is the narrowness of its aim. Rather than spreading bets across every category that's hot in a given year, it has spent nearly two decades concentrating on the same three lanes - and, importantly, on the seams between them, like AI applied to security or data infrastructure applied to healthcare.

Checks generally run from a few million dollars up to the high teens, sized for seed and Series A companies. When a portfolio company breaks out, the firm reaches into a second toolbox: three dedicated opportunity funds that exist to double down with follow-on capital on its highest-conviction winners. It is a structure built to lean into success rather than diversify away from it.

Who its customers are

A venture firm has two sets of customers, and .406 serves both. On one side are the limited partners whose capital fills the funds. On the other - the side the firm talks about most - are the founders. These are early-stage entrepreneurs building in security, health, and data, and the firm positions itself as an extension of their leadership team rather than a name on the cap table.

The clearest proof that founders value the relationship is that they keep coming back. By the firm's own account, roughly a third of its fourth fund went to founders it had already backed once before. In a business where most relationships end when a company is sold, repeat founders are the highest compliment an investor can be paid.

The scoreboard

• Carbon Black Endpoint security · acquired by VMware
• Veracode Application security · acquired by CA Technologies
• CloudHealth Cloud management · acquired by VMware
• Iora Health Primary care · One Medical / Amazon
• AbleTo Behavioral health · acquired by Optum
• Corvus Cyber insurance · acquired by Travelers

The problems it solves

For a founder, raising a first institutional round is only partly about money. The harder problems are hiring an early team, landing the first reference customers in a conservative enterprise buyer base, and figuring out which metrics actually matter. .406 tries to compress that curve. It keeps a standing council of more than 100 Fortune 500 C-suite operators - the kind of people who sign the checks portfolio companies are trying to win - and puts them in front of founders for advice, introductions, and blunt feedback.

The firm also frames part of its job as seeing around corners. In cybersecurity in particular, it describes trying to anticipate the vulnerabilities that will matter three to five years out, then finding the founder already building for that future. It is pattern recognition as a business model: fund the category before the category has a name.

How it's different

The obvious contrast is with generalist funds that pride themselves on being everywhere. .406's pitch is the opposite: depth over breadth, and a willingness to pass on a good company outside its zone rather than stretch. That focus is easy to claim and hard to sustain across two decades and five funds, which is part of what makes the track record - Carbon Black, Veracode, CloudHealth on the security side; Iora, AbleTo and others in health - a meaningful signal rather than a lucky streak.

The second difference is temperament. The firm talks about long-term partnership more than deal velocity, and its opportunity funds are a structural bet on staying with winners rather than recycling capital into the next new thing. Named after the last man to hit .400, it treats a well-timed "no" as part of the average, not a missed opportunity.

Assets under management, by the firm's account

The people and the market

The firm was co-founded by Liam Donohue, who had earlier started Boston venture firm Arcadia Partners; Maria Cirino, co-founder of the managed-security company Guardent; and Larry Begley, a former Razorfish CFO. That founding mix - one investor and two operators, one of them out of security - reads directly onto the strategy. Today the partnership includes investors such as Graham Brooks, Payal Agrawal Divakaran, and Greg Dracon, alongside an operating team that handles finance, legal, marketing, and portfolio operations.

Within the broader market, .406 sits in a crowded field of sector-focused and generalist early-stage firms competing for the same security, health, and AI founders - names like Ten Eleven Ventures, Bessemer, General Catalyst, and Accomplice. Its wedge is being small enough to be selective and old enough to have proof. In February 2024 it closed a $265 million fifth fund to keep swinging at the same three pitches, with early investments including the research platform Portrait Analytics.

Two decades in, the swing has not really changed. Cybersecurity, healthcare, data + AI - and the discipline, borrowed from a hitter, to let the wrong pitches go by.