Product-Market Fit Is the Easy Part

There is a moment in the life of a startup that almost nobody puts on a poster. The demo works. The first real customers have signed. The founders have finally stopped explaining what the product is and started explaining why the growth curve looks like a staircase instead of a rocket. This is Series B, and Greenfield Partners has built an entire firm around the belief that this - not the launch, not the seed round - is where companies are actually won or lost.

Greenfield is a growth-equity firm with roughly $1 billion under management and offices in Tel Aviv and New York. It spun out of the private-equity giant TPG Growth around 2019, led by Managing Partner Shay Grinfeld, and it invests almost entirely at the stage it calls "early growth": Series B and C, after product-market fit is proven but before a company knows how to scale without breaking. The firm's own shorthand for that stage is unusually honest. Grinfeld has described it as "an environment of controlled chaos."

Most venture capital romanticizes the beginning. Greenfield sells the middle.

The ThesisThe stage everyone else skips

The pitch sounds almost too simple. A company can nail its product, delight early customers, and still fall apart at the exact moment it tries to grow up - because the skills that get you to a few million in revenue are not the skills that get you to fifty. Sales stops being founder-led. Pipeline generation becomes a system instead of a hustle. Org charts appear. Partnerships need managing. Greenfield's argument is that this transition is predictable enough to be engineered, and that most founders are handed a check and left to figure it out alone.

So the firm built the opposite. Alongside capital, every portfolio company gets access to a go-to-market platform the firm calls Greenfield Growth Momentum, or G2M - a post-investment methodology organized around what it terms the "Seven Pillars of Efficient Growth," delivered through more than 20 operational playbooks.

The EdgeA dashboard for growth stalls

The most quietly ambitious piece of the operation is a proprietary tool called ORION, which Greenfield describes as a "single source of GTM truth." It ingests a portfolio company's CRM, sales, pipeline and financial data, benchmarks it against peers, and is designed to flag a stalling growth engine early - before it shows up in the headline numbers a board would panic over. In an industry that still runs on gut feel and warm intros, a firm treating go-to-market like an instrument panel is a genuine point of difference.

The people delivering that advice are not just financiers. Greenfield staffs an expert network of go-to-market operators drawn from companies like Stripe, monday.com and Marqeta, and the investment team blends bankers - alumni of Goldman Sachs and Barclays - with operators who have actually run the pillars they preach. Venture Partner Avery Schwartz frames the selection filter for founders plainly: "We aim to partner with teams who are hungry, humble, and smart, and whose values are at the heart of what they do."

By the NumbersA small team, a large fund

The PortfolioWhat they actually back

The common thread across Greenfield's investments is not a single sector - it is a moment. The firm concentrates on enterprise and tech-enabled companies in cybersecurity, AI infrastructure, deep tech, fintech, enterprise SaaS and data infrastructure. In 2025, four of its next six deals went into deep tech, and General Partner Raz Mangel has argued the country's next big export category is coming into view: "Israel isn't getting enough credit yet in AI infrastructure and models."

The track record for the stage-focused approach shows up in the exits. Greenfield-backed Guardicore was acquired by Akamai for roughly $600 million, and Avanan was bought by Check Point for roughly $300 million. More recently, portfolio company Torq raised $140 million at a $1.2 billion valuation, with Greenfield participating.

The BusinessHow the firm makes money

Structurally, Greenfield is a fund manager. It raises capital from institutional limited partners - largely US and Israeli pension funds and institutions - and earns management fees plus carried interest on the returns from its equity stakes, realized through acquisitions, secondary sales and IPOs. What is unusual is not the mechanics but the deliberate smallness: roughly 37 people steering about a billion dollars, with a bench of operators rather than a factory of analysts. Promotions from within - CFO Ana Sudnik and Head of Capital Formation Daniel Milstein both made Partner in 2025 - point to a build-from-within culture rather than a churn of dealmakers.

The ArcFrom spinout to a billion

The FieldWhere it fits

Greenfield sits in a crowded neighborhood of growth-stage and crossover investors chasing Israeli and enterprise tech - firms like Insight Partners, 83North, Battery Ventures, Qumra Capital and TCV. Its wager is that capital alone has become a commodity, and that the differentiator at the scaling stage is operational: playbooks, benchmarks and operators who have done the climb before. Whether that edge compounds will be settled the way everything in this business is - slowly, in the exit column. But the bet is refreshingly specific in a field that often prefers to be everywhere at once.

For founders staring down the staircase, the appeal is easy to understand. The hard part was never proving people want the product. The hard part is the year after.