Every year a profitable company throws off cash, and management has five things it can do with it: reinvest in the business, pay down debt, buy other companies, pay dividends, or buy back its own shares. How they choose is capital allocation, and over a decade it can matter as much as the underlying business. Buffett calls it the most important part of a CEO's job.
The signal easiest to read is the share count. When a company buys back its own stock, the number of shares shrinks and every remaining share owns a bigger slice of the business. When it issues stock — to pay staff, fund acquisitions, or raise cash — the count grows and your slice shrinks. A share count that falls year after year (Apple's dropped about 11% in five years) hands owners a larger stake without them lifting a finger. A steadily rising count is quiet dilution, and it's worth asking what you got for it.
The other tells sit in the cash flow statement, which this site charts across five years. Capital expenditure against operating cash flow shows how much the business must spend just to keep running versus what's left over. Debt rising or falling shows whether management is adding leverage or working it off. Cash piling up can mean discipline or a shortage of ideas. None is good or bad alone — a young company should reinvest everything, a mature one should return cash — but together they reveal whether the people running the business treat your money like owners or spend it like it isn't theirs.
The one thing to distrust is growth bought with dilution or debt: revenue that only rose because the share count or the borrowings rose faster is growth that never reached you.