How the Stock Market Works

It's just a marketplace

The stock market is exactly what it sounds like — a market where people buy and sell ownership stakes in companies. Think of it like a massive online marketplace that runs Monday through Friday, 9:30 AM to 4 PM Eastern time. Sellers list their shares, buyers make offers, and prices are set by what someone is willing to pay. The only difference is that instead of products, people are trading pieces of companies.

If more people want to buy a stock than sell it, the price goes up. If more want to sell than buy, it goes down. That's it.

Who's actually trading

When you buy a stock, you're not buying it from the company itself — you're buying it from another investor who wants to sell. Big institutions (pension funds, mutual funds, hedge funds) trade billions of dollars every day. Individual investors like you are also in the mix. Individual investors actually have one key advantage over the big guys: you can be patient. Large funds are forced to trade constantly. You can hold for years.

Why you don't need to watch it every day

The market's daily noise — stocks up 2%, down 3%, CNBC saying it's a crisis — is almost entirely irrelevant if you're investing in good businesses for the long term. Warren Buffett famously said he wouldn't care if the market closed for 10 years. The underlying businesses he owns would still be generating profit. You don't need to be glued to a screen. Good investing is mostly patience.

What blue focuses on

blue ignores the daily price noise entirely. It scores the underlying business — is the company growing? Is it priced fairly? Is it well-run? Is it financially safe? These things don't change week to week. They reflect the real, long-term health of the business. That's what actually matters to an investor with a 5-10 year horizon.