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In May 2006, Mark Leonard took Constellation Software public on the Toronto Stock Exchange (TSX) with a $345 million USD market capitalization. The company had spent eleven years buying software businesses nobody else wanted – platforms for managing golf course tee times, utility billing systems, funeral home record-keeping. Businesses that generate real cash flow and will never appear on the cover of Wired.

Berkshire Hathaway had been running a different playbook for forty years by then. Subsidiaries send profits to Omaha. Warren Buffett decides where every dollar goes next. That model has compounded at roughly 20% annually since 1965, and every serious allocator in this space has studied it.

Buffett wants the cash. Leonard does not.

Since that 2006 IPO, Constellation has compounded at roughly 26% annually, growing to approximately $37 billion in market capitalization today. It has acquired more than 1,100 software businesses, manages over 800 of them currently, and generates $11.6 billion in annual revenue. The company has never required a subsidiary to send cash back to headquarters. 

Leonard's founding thesis: Vertical Market Software (VMS) businesses are unusually durable. They serve narrow industries – golf courses, transit agencies, funeral homes, utility billing operations – where customers are deeply embedded, revenue is recurring, and competition is limited. Most generate between $1 million and $20 million in annual revenue. No PE firm wants to write that check. No strategic acquirer is paying attention.

These businesses just sit there, compounding cash flow, with no natural buyer.

Constellation now closes over 100 acquisitions per year across more than 40 countries.

At Lynnfield, we acquire cash-flowing businesses in the $1M–$10M EBITDA range and offer co-investment opportunities to qualified investors. Join our investor list to receive deal flow as we evaluate new acquisitions. 

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Constellation operates through six principal groups – Volaris, Harris, Jonas, Vela, Topicus, and Lumine – each with its own management team, deal pipeline, and balance sheet. Two have since been spun off as listed public entities and remain part of the broader network.

The inversion of Berkshire runs through the entire structure. Buffett wants the cash; Leonard does not. Operating groups keep their capital. Business unit managers are trained and expected to make their own acquisitions. As Leonard wrote in his 2015 shareholder letter, the goal was to develop hundreds of capable part-time capital allocators inside the operating businesses – not source more deals from headquarters. That is how Constellation crossed 100 acquisitions per year. The machine scales not because Leonard does more, but because the network of decision-makers grows.

The hurdle rate discipline is the other structural feature worth understanding. Leonard set target Internal Rates of Return (IRR) by deal size: roughly 30% for small transactions, 25% for mid-sized, 20% for deals above $100 million. He held those rates through the zero-interest-rate decade when most acquirers were stretching their criteria. His reasoning: lowering the hurdle creates what he called "a gravitational pull toward mediocrity."

A fixed hurdle rate (the minimum required rate of return that one expects to earn from an investment to consider it viable) behaves like natural market timing without requiring anyone to call the cycle. When prices run up, you buy less. When they correct, the machine accelerates. Discipline does the work.

Strip "software" from Constellation's acquisition criteria: high revenue retention, low capital expenditure requirements, niche competitive moats, deal sizes that lock out most larger acquirers. That describes every durable Main Street business worth owning.

Constellation's individual businesses average roughly $10 million in revenue. Many are smaller. Together, 800 of them produce $11.6 billion. At a 25% hurdle rate with disciplined reinvestment, free cash flow roughly doubles every three years. The reason Constellation compounds at 26%+ is not that any single business grows fast – most grow at low single digits. Capital recycles into the next acquisition, then the next, at a sustained discount to the eventual return on capital. That engine works whether the underlying businesses are VMS platforms or irrigation contractors.

Earlier this year, we profiled Permanent Equity as proof that the permanent-hold model works at the smaller end of the market – $300 million+ in assets, no leverage, no exits, founder-aligned ownership. Constellation is the proof it holds at $37 billion. Same principles across thirty years: buy at disciplined prices, hold indefinitely, trust operators. 

The most underappreciated lesson is the decentralization, and it is what most distinguishes this profile from the Permanent Equity piece. Every capital vehicle eventually hits a ceiling where headquarters can no longer evaluate every deal because that would cause growth to slow or quality to drop. Constellation solved this by building capital allocation capability inside the businesses themselves. For Lynnfield, the long-run constraint on how much we can compound is not the deal market; it’s how many disciplined operators we develop inside the portfolio.

Then there are the letters. Leonard's shareholder letters from 2007 to 2018 functioned as a flywheel – generating deal flow, attracting operators, building the investor base. The same mechanism Permanent Equity uses now, Leonard had been running for a decade. He stopped in 2018 because the letters had become a competitive disadvantage: too many people were using them to replicate the playbook. 

If you haven't read them, Quartr has a full collection. Start from 2007.

2,345 small businesses changed hands in Q1 2026 according to BizBuySell's Q1 Insight Report. Strong, cash-flowing businesses drew multiple buyers and sold at premium prices. Flat performers sat longer or didn't close at all. Total enterprise value hit $2 billion, and 45% of brokers say lending conditions are making deals harder to complete.

What this means is that the deal market isn't slow. It's crowded, but only at the top. We're seeing it in our own pipeline. The businesses worth owning have never had more competition around them. Sourcing and diligence discipline have never mattered more.

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Thanks for reading!

If this raises questions about what permanent capital looks like at your scale, reply to this email. I read every response.

Talk soon,
Param

P.S. Constellation is the third Investor Profile in an ongoing series on models of permanent capital. If you missed it, check out our previous editions.