Definition
EPS is the most quoted profit measure. Analysts publish estimates, and a result above the estimate is called a beat and below it a miss. GAAP EPS follows accounting rules; adjusted or non-GAAP EPS leaves out certain items.
Formula
EPS = (net income - preferred dividends) / weighted average shares outstanding
Watch out for
Compare GAAP and adjusted EPS. A big gap can mean large costs are being excluded.