There's no foolproof way to know the future for Linear Technology (Nasdaq: LLTC) or any other company. However, certain clues may help you see potential stumbles before they happen -- and before your stock craters as a result. Rest assured: Even if you're not monitoring these metrics, short-sellers are.
A cloudy crystal ball
I often use accounts receivable (AR) and days sales outstanding (DSO) to judge a company's current health and future prospects. It's an important step in separating the pretenders from the market's best stocks. Alone, AR -- the amount of money owed the company -- and DSO -- days worth of sales owed to the company -- don't tell you much. However, by considering the trends in AR and DSO, you can sometimes get a window onto the future.
AR that grows more quickly than revenue, or ballooning DSO, can suggest a desperate company that's trying to boost sales by giving its customers overly generous payment terms. Alternately, it can indicate that the company sprinted to book a load of sales at the end of the quarter, like used-car dealers on the 29th of the month. (Sometimes, companies do both.)
Why might an upstanding firm like Linear Technology do this? For the same reason any other company might: to make the numbers. Investors don't like revenue shortfalls, and employees don't like reporting them to their superiors.
Is Linear Technology sending any warning signs? Take a look at the chart below, which plots revenue growth against AR growth, and DSO:
