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The Simple Formula That Beats the Market 99% of the Time (Joel Greenblatt's Magic Formula)

Reading_China · 2026-10-22 · 유튜브 시청 2 · Board Views 10 · International

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Why do 90% of the world's most elite Ivy League, Wall Street investors ultimately lose to a math equation designed for a sixth grader? Right, it's a it's an insane contradiction. Just hold that thought in your head. I mean, you picture global finance as this impenetrable fortress, right? Yeah, totally.

Imagine supercomputers in Manhattan, armies of guys in $5,000 suits, working 100-hour weeks. Exactly. Using algorithms so complex you need a PhD just to look at them. And yet the data proves a completely face-slapping reality. They fail. They lose. They cannot even beat a brainless market average. It's the ultimate wealth paradox.

And it's deeply, deeply humiliating for Wall Street. It really is. The failure rate actually goes up as their models get more complex. They outsmart themselves completely. So, the secret to wealth is definitely not held by the guys in the suits. Uh, no. Not at all. So, our mission for this deep dive is clear.

We are unpacking Joel Greenblatt's The Little Book That Still We are burning all the complex theories to the ground. We are revealing the 1 + 1 = 2 system that legally extracts wealth from the market. I love it. Let's get into it. So, let's start with a massive question. If the stock market is so perfectly efficient, why does a giant company like General Motors see its value swing by 50% in a single year?

Right, it completely destroys the academic narrative. did they suddenly lose half their factories in a freak accident? Obviously not. The underlying business is exactly the same. So, why does the price violently jump off a cliff? Because of Mr. Market. Benjamin Graham coined this. The market isn't a calculator, it is a manic-depressive business partner.

Okay, let's unpack this. You're saying the market is just an emotional roller coaster. Exactly. Every single day Mr. Market wakes up screaming out random prices. Pure emotion. Extreme optimism at the peak. Yeah, and extreme, terrifying pessimism at the bottom. But here is the contrarian takeaway. This insane volatility isn't a risk.

No, it's a gift. It's a system for legally picking up money off the floor. Right, because you don't have to listen to them. You just wait for them to panic and drop the price. Why is everyone else entirely blind to this? Because they watch the ticker tape, you know? They get swept up in the exact same panic.

Which brings us to the man who figured this out. Meet the guy who turned an Ivy League lectern into a 40% annualized return. A literal miracle. It breaks every single rule of modern finance. Joel Greenblatt. Columbia Business School professor. Founder of Gotham Capital. And his data is just undeniable.

From 1985 to 2005 20 years. 20 years of 40% compound annual growth. That is absurd. It completely humiliates Wall Street professionals. And here is where it gets really interesting. He took this world-class strategy and he stripped it down so his sixth-grade kids could understand it. Right, because he wants to prove you don't need an MBA, you just need basic math.

Which leads us perfectly to the next point. Yeah. How does a sixth-grader flipping packs of chewing gum reveal the absolute deepest truth of value investing? I mean, it sounds like a joke, but it's the core of everything. So there's this kid, Jason. 11-year-old hustler. He buys a pack of gum for 25 cents.

Okay. He takes the five sticks inside. He sells them for 25 cents each. Wow. He pockets a pure, unadulterated $1 profit per pack. Brutal capitalism. I love it. Look at the mechanics there. Right. The cash flow is massive compared to what he put in. It's a face-slapping realization. Investing isn't about red and green lines on a screen.

No. You are buying a real business. You are buying a piece of Jason's gum hustle. Exactly. You are buying a legal claim to his future cash. But what happens if you can buy into Jason's wildly profitable business at half price? That is the dream scenario. But wait, is it actually possible to buy a crisp $1,000 bill for $500?

In the physical world, obviously no, but in the stock market Yes, because of the tug-of-war. You have intrinsic value on one side. cash the business makes. Right, and market price on the other, Mr. Market's current emotional state. And the gap between those two is the margin of safety. Exactly. So what does this all mean?

How do we actually find the $500 price tag on the $1,000 company? Well, we don't use a crystal ball. Wall Street tries to predict the future, they guess. And they fail. Terribly. Yeah. We only need two unbelievably simple financial dimensions. No predictions required. Dimension one. Why is a company earning a 50% return infinitely better than one earning 2 and 1/2%?

Even if they make the exact same product. Right. Let's compare Jason's gum shop to a theoretical broccoli shop. Okay, let's do it. Jason has massive return on capital or ROC. The broccoli shop has terrible ROC. Return on capital is just efficiency. It's how well a company turns investments into pure profit.

It's the engine of the business. Exactly. Jason puts in a quarter, he gets a dollar. The broccoli shop puts in 10 grand, they get 200 bucks. Complete garbage return. Right. A high ROC implies a special advantage. A moat. Like a brand or a patent or crazy efficiency. It protects them from competitors.

Okay. But a good business is useless if you overpay. So dimension two. Forget the stock price. Yep. How much actual cash are you getting back for every single dollar you hand over? This is earnings yield. It is the great equalizer. Because it compares the profit directly to the purchase price. Exactly.

Think of a 10-year US Treasury bond. Let's say it pays a risk-free 6%. Safe, boring government money. Right. If you buy a stock, you need way more than 6% to justify the risk. 10 to 30% earnings yield. Yeah. If you get that, the stock is incredibly cheap. But here's the brutal truth. A cheap business is a total trap if it's a terrible company.

Right, a melting ice cube. And a good business is a trap if you pay too much for it. So the pure magic only happens when they collide. Exactly. Good business, cheap price. Which brings us to the core engine, the magic formula. How does simple elementary school addition automatically screen out the market's ultimate winners?

It's a flawless mechanical sorting system. Step one, you rank the top 3,500 companies by return on capital. Best worst, 1 to 3,500. Got it. Step two, you rank them all again by earnings yield. Cheap to expensive. Okay, let's unpack this. What's step three? You literally just add the two numbers together.

The absolute lowest scores are your targets. Wait, you're telling me this process completely ignores Wall Street forecasts? Completely ignores them. It uses zero future predictions. Zero. It strictly uses last year's cold, hard, public data. That is insane. It completely removes human emotion. Which is exactly why it works.

Okay, but does it work in reality? When the formula actually hits the live market, how did a 30.8% annual return turn $11,000 into a million? Yeah, let's look at the actual data. Table 6.1, 1988 to 2004. 17 years. The market average was a measly 12.3%. Just fine, but boring. But the magic formula, 30.8% every single year.

That is just staggering. It's not just beating the market, it's completely humiliating decades of academic theory. It proves the academics are totally wrong. Yeah. It doubled the market. Yes. But wait, if this only works on tiny, ignored penny stocks, it's useless for real money. Sure. What happens if we force the formula to only buy massive, billion-dollar mega-corporations?

This is the big-cap stress test, table 7.1. The toughest, most liquid market on Earth. Right. The top 1,000 largest stocks. Highly competitive, everyone is watching them. The formula still delivered 22.9% annually. The market was only at 11.7. It still crushed it. Even with massive companies. Even during the 2000 to 2002 dot-com crash.

Right. When everyone else was jumping out of windows, the formula survived. Because it mathematically rejected the overvalued garbage. The survival rate is incredible, but the accuracy of the formula is what's truly terrifying. The gradient law. Yes. Why does the exact order of the rankings perfectly predict the future?

Let's look at the decile test, table 7.2. They took 2,500 companies. Ranked them. Ranked them, and grouped them into 10 buckets based on their score. Here is the anti-common-sense conclusion. The returns perfectly cascaded downward. Flawlessly. Group one, the best score, got 17.9%. Group two got a little less.

Right. All the way down to group 10, the expensive, mediocre stocks. They got a miserable 2.5%. knew they were trash before they even failed. It is a perfect sorting hat, which raises a massive question. Oh, I know what you're going to ask. If this is so perfect, why isn't every single person on Wall Street blindly using it to get rich?

Because of the dark side. The magic formula's ultimate superpower is that it occasionally makes you look like a complete idiot. Yeah, that's the painful truth. It fails in the short term. It actually loses. One out of every four years, it completely loses to the market. Wow. Sometimes it underperforms for three consecutive years.

Think about that psychological pain. You are managing other people's money. You look stupid. Your clients yell at you. Your spouse doubts you. Most investors absolutely cannot endure 2 years of looking stupid. No, they panic. They abandon the formula right before it violently skyrockets. It is the ultimate cognitive flip.

Right. Because it looks stupid in the short term, the masses refuse to use it. And that agonizing patience is the actual moat. Exactly. It protects the high returns for the few who stay. Okay. So, let's move from theory to Raw Wealth. What is the exact minute-to-year blueprint to execute this? Five simple steps.

Step one, screen. Go to magicformulainvesting.com. It does the math for you. Step two, diversify. You must hold 20 to 30 stocks. Don't just buy one. Never. Step three, pace yourself. Buy five to seven stocks every few months. Ease into it. Got it. What's step four? Adjust. You sell precisely after 1 year.

No emotion. Cold, mechanical selling. And step five, tax optimize. Sell losers just before a year. Sell winners just after a year. It takes like 15 minutes a year of actual work. The rest is just an agonizing test of emotional restraint. Sitting on your hands. But wait, did the worst economic disaster of our lifetime finally break this thing?

You mean 2008? Yeah, the financial tsunami. Did the formula survive? Let's look at the 2010 update, table A.1. The whole system crashed. Right. In 2008, the S&P 500 crashed 37%. Brutal. The magic formula crashed 39%. It took a massive hit. It didn't magically shield you. No, but look at the violent reversal in 2009.

The snapback. The market rebounded 26.5%, but the formula it exploded by 59%. corrected upward. Over a massive 22-year span, including the worst crises, the return stayed at an immovable 19.7%. Value always inevitably returns to the mean. It's gravity. Always. It never fails over the long run. So, look at the world today.

Is the crowd repeating the exact same expensive fatal mistakes? Every single day. The stock market isn't a math problem. It's an amplifier of human desire and terror. People always chase get-rich-quick schemes. Always. Meme stocks, crypto hype. It causes constant bubbles, crashes, and emotional pricing.

And that is your perpetual opportunity. Exactly. The true competitive advantage isn't a complex algorithm. No. It is your personal unwavering belief in the logic of value when everyone else is panicking. It's about being stubborn. So, here's a final thought for you, the listener. As we watch today's market swing wildly, the final question is entirely yours.

Yeah. Do you have the sheer courage to tightly grip these unloved ugly pearls during a free fall? Or will you surrender to the crowd? And be completely washed out in the next inevitable wave? Think about it. See you on the next deep dive.

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