The GPS of the Market

If the market is a giant statistical calculator (as Larry Harris calls it), then Informed Traders are the data scientists providing the inputs. In Chapter 10, we look at the people who actually do the work to figure out what things are worth.

Fundamental Value vs. Market Noise

First, a quick vocabulary lesson:

• Market Value: The price you see on your screen right now.
• Fundamental Value: The “true” value if you knew everything there was to know about an asset.
• Noise: The difference between the two.

Informed traders are the ones who hunt for the noise. They buy when the price is below fundamental value and sell when it’s above. Their trading actually creates informative prices for the rest of us.

The Four Styles of “Smart Money”

Harris identifies four ways to be an informed trader:

1. Value Traders (The Deep Researchers)

These guys look at everything: balance sheets, management quality, interest rates, and tech trends. They build massive “pyramid” organizations to stay disciplined. They are slow, but they are the “liquidity suppliers of last resort” because they know exactly when a stock is too cheap to pass up.

2. News Traders (The Sprinters)

News traders don’t care about absolute value; they care about changes. If the FDA approves a new drug, they estimate how much that adds to the company’s value and buy before everyone else. They need “flat” organizations because speed is life—if they are too slow, the news is already “in the price.”

3. Information-Oriented Technical Traders (The Scavengers)

Unlike regular “chartists,” these traders look for systematic mistakes made by other pros. If value traders consistently overreact to earnings reports, these scavengers profit by correcting that overreaction.

4. Arbitrageurs (The Enforcers)

They look at the “Law of One Price.” If gold is cheaper in London than in New York, they buy in London and sell in New York. They don’t care what gold is “worth”; they just care that it should be the same price everywhere.

The Danger Zone: Pseudo-Informed Trading

The most common way to lose money is to be a Pseudo-Informed Trader. This is when you trade on “stale” news. If you see a headline on a news site and think, “I should buy this,” you’re probably already too late. The pros (and their algorithms) already pushed the price to the new fundamental value. You’re just providing them with liquidity.

Stealth vs. Aggression

If an informed trader thinks their info will be public in five minutes, they trade aggressively (taking liquidity). If they think it will take weeks for the market to catch on, they use stealth trading (slowly buying over time) to hide their tracks.

In the next part, we’ll look at the limits of informed trading and why markets can never be 100% efficient.

Next Post: Market Efficiency and the Limits of Knowledge (Part 2)