
In addition to listing outstanding shares or capital stock on the company’s balance sheet, publicly traded companies are obligated to report the number of issued along with their outstanding shares. These figures are generally packaged within the investor relations sections of their websites, or on local stock exchange shares outstanding formula websites. The number of outstanding shares of a company changes constantly and is used to calculate its market capitalization. This is done by multiplying the total shares outstanding by the current price per share. So a company with 10 million shares outstanding and a share price of $5 has a market cap of $50 million.
Typically, companies issue shares when raising capital through equity financing or upon exercising employee stock options (ESO), or other financial instruments. On the other hand, outstanding shares will decrease if the company buys back its shares under a share repurchase program. To illustrate this, let’s take a hypothetical company, ABC Inc., which has 2 million shares outstanding trading at $150 per share, leading to a market capitalization of $300 million. Post-split, the number of shares outstanding will increase to 6 million shares, while the share price adjusts to $50 per share. In financial analysis, understanding the shares outstanding is fundamental to gauging a company’s market value and shareholder equity. The two forms of shares outstanding—basic and diluted—are used to calculate market capitalization and earnings per share (EPS).
The total number of issued and treasury stock includes both common and preferred stock available in the company balance sheet. The buyback increases the market value of the existing shares in the open market. It also raises the company’s earnings per share figure (EPS) since earnings are divided by a smaller number of shares. A share repurchase generates a higher income per share, making each share more valuable. The purpose of the repurchase can also be to eliminate the shareholder dilution that will occur from future ESOs or equity grants.

The outstanding shares formula is represented as issued shares minus shares held in the company’s treasury or treasury stock. Through this formula, one can determine the outstanding shares of a company. When you purchase a stock, you buy the shares outstanding from the company’s floating shares.
Shares outstanding are used to determine a company’s market capitalization, i.e. the total value of a company’s equity, or equity value. However, due to the fluctuations in share counts between reporting periods, the figure is typically expressed as a weighted average. The term shares outstanding is defined as the total number of shares a company has issued to date, after subtracting the number of shares repurchased. As such, index providers such as S&P and others are market leaders in setting a precedent for calculating floating stock methodologies.
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