Most investors want to be entertained. They want meme stocks, CNBC soundbites, and a portfolio that feels like an action movie. Joel Greenblatt didn’t care about any of that. He took the most boring, unsexy corners of the market — spin-offs, restructurings, weird tax-driven corporate divorces — and turned them into an ATM. While everyone else was gambling on hot tips, Greenblatt was quietly compounding at rates that made him one of the best money managers of his generation.
Reading through his class notes is like sitting in on a semester of “How to Actually Make Money in Markets 101.” Except instead of equations about efficient markets, you get simple observations like: “When companies spin off divisions, investors usually dump the new shares without thinking. That’s when you buy.” Or: “Management incentives matter more than glossy strategy decks.” It’s not rocket science. It’s just disciplined exploitation of human laziness and institutional stupidity.
Greenblatt basically lived in the cracks. Everyone else was playing the same crowded game of picking “good companies at good prices,” and he was rifling through the trash looking for mispriced scraps. Spin-offs, liquidations, stub stocks, mergers with odd structures — the kind of stuff most investors can’t be bothered to read past the first footnote. And because no one else cared, the returns were ridiculous.
But it wasn’t just the situations he picked. It was the mindset. Greenblatt had no interest in the market’s quarterly popularity contest. He was laser-focused on compounding capital. The Magic Formula — buy good companies cheap — sounds so basic it’s almost insulting. Yet when he back-tested it, it absolutely crushed. Why? Because no one sticks with it. Everyone wants the shortcut, the next hot theme, the excitement. Following a mechanical system that spits out boring names like auto parts suppliers and forgotten software firms? Too much discipline required.
The notes hammer on a few themes that Wall Street still hasn’t absorbed.
- One: incentives drive outcomes. If management gets paid on EPS growth, they’ll do dumb deals. If they get paid on per-share value creation, they’ll actually act like owners.
- Two: spinoffs are gold mines because sellers don’t care about them. Imagine getting shares of a company you didn’t ask for, don’t understand, and can’t pitch to your PM. You dump it. Greenblatt bought those dumps.
- Three: valuation still matters. Even a decent business at the wrong price will wreck you. Buy cheap enough and the market eventually figures it out.
There’s a wonderful cynicism running through his approach. It assumes most investors are either lazy, constrained, or distracted. Lazy because they don’t bother to read filings. Constrained because mandates prevent them from holding small or weird stocks. Distracted because they’d rather chase sexy narratives. Greenblatt didn’t need to out-think everyone. He just needed to show up where no one else was looking.
Of course, the irony is that when he eventually wrote
, he handed out the playbook for free. The book basically says: “Here are all the situations Wall Street ignores. Here’s how to make money from them.” Most investors read it, nodded, and went back to chasing tech IPOs. Which is why the edge never really disappeared. Everyone likes the idea of being a contrarian; very few want to do the work of actually being one.
What makes the class notes click is how blunt they are. No mysticism, no fancy jargon. Just: “Buy cheap stuff in situations where everyone else is forced to sell. Make sure management’s incentives aren’t trash. Be patient.” That’s it. The compounding takes care of itself if you can actually follow the rules. Which, again, most people can’t.
So why is this relevant today? Because the game hasn’t changed. Investors still dump spinoffs reflexively. Incentives are still misaligned. Boring, ugly companies still get mispriced because no one can pitch them at cocktail parties. And investors still sabotage themselves by chasing heat and puking out winners too early. Greenblatt’s notes are three decades old, but they might as well have been written last week.
It’s also a reminder that the edge in markets isn’t brilliance. It’s discipline. It’s reading the extra footnote, actually showing up to play the weird little games that everyone else ignores. Greenblatt didn’t invent a new way of valuing companies. He just applied common sense consistently, in areas where common sense wasn’t fashionable.
The uncomfortable truth is that most people reading his notes will nod along, agree it makes sense, and then do absolutely nothing about it. They’ll go back to screens full of AI stocks and crypto proxies. They’ll ignore the spin-off prospectus sitting in their inbox because it’s boring. And in a decade, they’ll wonder why their returns are mediocre while Greenblatt types keep compounding away in obscurity.
The real lesson in Greenblatt’s notes isn’t a clever formula or some secret hack. It’s that you can build absurd wealth by doing the dull, patient, obvious things everyone else refuses to. Markets don’t reward intelligence. They reward consistency. Greenblatt had that in spades. Which is why while everyone else was chasing shiny objects, he was quietly printing money.
