Investor Psychology

Module 7 of 8 7 concepts ~20 min read

The Fear & Greed Cycle

Markets don't move on logic alone — they move on emotions. And those emotions follow a predictable cycle that repeats over and over.

Optimism Excitement EUPHORIA (Maximum risk!) Anxiety Panic CAPITULATION (Maximum opportunity!) Hope Relief repeat Retail buys here Retail sells here

Most retail investors buy at euphoria (when prices are highest and excitement peaks) and sell at panic (when prices are lowest and fear peaks). That's the exact opposite of what makes money.

Imagine a grocery store where steaks go on 50% sale, but instead of buying more, everyone runs out of the store screaming. Then when steaks are overpriced, people line up around the block. That's how retail investors treat stocks.
"Be fearful when others are greedy, and greedy when others are fearful." — Warren Buffett. The crowd's emotions are your contrarian signal.
Benjamin Graham, The Intelligent Investor: "Mr. Market" is an emotional person who shows up every day offering to buy or sell stocks. Some days he's euphoric (offering absurdly high prices); other days he's depressed (offering bargain prices). You don't have to accept his offers — but most people do, at exactly the wrong times.

Loss Aversion: Why Losses Hurt 2x More

Here's something behavioral economics has proven: losing $100 feels about twice as painful as gaining $100 feels good. This isn't a choice — it's hardwired into your brain.

Gains ($) Losses ($) Pleasure Pain +$100 Joy -$100 2x PAIN 30px 60px

How Loss Aversion Destroys Returns

  • Holding losers too long: "I haven't lost money if I haven't sold" — this is a dangerous myth. If the company's fundamentals changed, the loss is real whether you sell or not.
  • Selling winners too quickly: You lock in small gains out of fear they'll disappear, missing the big runs. Your winners need room to compound.
  • Avoiding the market entirely: The fear of any loss keeps millions of people in savings accounts earning 1% while inflation runs at 3%.
"I'll sell when it gets back to break-even" is one of the most expensive sentences in investing. If you wouldn't buy a stock today at its current price, you should seriously consider why you're still holding it.
Morgan Housel, The Psychology of Money: "Reasonable is more realistic than rational." We aren't calculating machines — accepting that we have emotional biases is the first step to managing them.