Sensex

The size of the worldwide 'bond market' is estimated at $45 trillion. The size of the 'stock market' is estimated at about $51 trillion.
Outstanding Shares:
Stock currently held by investors, including restricted shares owned by the company's officers and insiders, as well as those held by the public. Shares that have been repurchased by the company are not considered outstanding stock.
Also referred to as "issued and outstanding" if all repurchased shares have been retired.
This number is shown on a company's balance sheet under the heading "Capital Stock" and is more important than the authorized shares or float. It is used to calculate many metrics, including market capitalization and earnings per share (EPS).
Float:
The total number of shares publicly owned and available for trading. The float is calculated by subtracting restricted shares from outstanding shares.
Sensex:
The index is calculated based on a free-float capitalization method when weighting the effect of a company on the index. This is a variation of the market cap method, but instead of using a company's outstanding shares it uses its float, or shares that are readily available for trading. The free-float method, therefore, does not include restricted stocks, such as those held by company insiders that can't be readily sold.
To find the free-float capitalization of a company, first find its market cap (number of outstanding shares x share price) then multiply its free-float factor. The free-float factor is determined by the percentage of floated shares to outstanding. For example, if a company has a float of 10 million shares and outstanding shares of 12 million, the percent of float to outstanding is 83%. A company with an 83% free float falls in the 80-85% free-float factor, or 0.85, which is then multiplied by its market cap (e.g., $120 million (12 million shares x .$10/share) x 0.85 = $102 million free-float capitalization).