Shares outstanding

In detail

Shares outstanding is the count of a company's shares currently held by all its shareholders, including insiders and institutions. It is the denominator for market capitalization (share price × shares outstanding) and for every per-share metric, earnings per share among them. Three related counts get confused. Shares outstanding is what has been issued and not repurchased. Float is the subset actually available to trade, excluding closely held and restricted shares — a stock with a small float can move violently on ordinary volume. Fully diluted shares add what would exist if options, warrants, and convertible securities were exercised. The number moves, and the direction matters. Buybacks reduce it, which lifts earnings per share even when total profit is flat. Stock-based compensation and secondary offerings increase it, diluting existing holders. Because EPS is a ratio, a company can report growing earnings per share while the business itself is not growing at all — worth checking the share count alongside any per-share figure before reading it as improvement.