Investing education, not investment advice
Understand investing,
one term at a time.
From index funds to valuation ratios, across every style of investing. Every concept explained clearly, and every term links to a plain-language explanation the moment you need it.
Archive
The four types of ratios
Ratios fall into four categories, each answering a different question about a company. Knowing which category a ratio belongs to tells you what it is actually measuring, and what it cannot tell you.
Adobe, a lesson in value investing
Adobe's stock has fallen 70% from its 2021 high while revenue and margins stay strong. The market is betting AI will erode its moat. Is that bet right?
Understanding margins
The same income statement looks completely different depending on the size of the company. Margins strip away size and let you compare any two companies, or a company against its own past, on equal footing.
Understanding ratios
Margins tell you how profitable a company is. Ratios go one step further and tell you whether the stock price reflects that profitability fairly, generously, or not at all.
Investing in the S&P500
Everybody buys the S&P 500 as a way to diversify across the US market. But a handful of companies now account for more of the index than most investors realize.
New tool: Cash Flow Statement
An interactive walkthrough of the cash flow statement, line by line.
New tool: Balance Sheet
An interactive walkthrough of the balance sheet, line by line.
Understanding financial statements
Every listed company publishes three core financial statements. Together they tell the full story of a company's financial health, if you know how to read them.
New tool: Income Statement
An interactive walkthrough of the income statement, line by line.