Learn before you invest.

Short, practical guides written by our market team. Free for everyone, no account needed.

Featured guide

Bull and bear markets, explained

What drives long rallies and sharp sell-offs, and how to keep investing through both.

Market basics, 6 min read

Market basics, 4 min read

How exchange-traded funds give you a whole basket of stocks in a single trade.

Investing, 5 min read

Yield, payout dates and reinvesting: a plain guide to getting paid for owning shares.

Investing, 3 min read

Own a slice of any company for as little as $1, no matter the share price.

Risk management, 5 min read

Decide your exit before you enter, and let the order do the hard part for you.

Risk management, 6 min read

Why spreading your money around is the closest thing investing has to a free lunch.

The words you'll see most often on a stock page, in one sentence each.

Ask: The lowest price a seller will currently accept for a stock.
Bid: The highest price a buyer will currently pay for a stock.
Dividend: A share of company profits paid to shareholders.
ETF: A fund that holds many investments and trades like one stock.
Market cap: A company's total value: share price times shares outstanding.
P/E ratio: Share price divided by earnings per share, a common valuation measure.
Volatility: How much and how quickly a price moves up and down.
Yield: Annual income from an investment as a percentage of its price.

Open an account and start with as little as $1.