Short Interest Ratio

Short Interest Ratio

The short ratio (or short interest ratio, SIR) for a public company is a metric signaling prevailing investors' sentiment. The ratio is calculated by dividing the number of shares sold short by the average daily trading volume, generally over the last 30 trading days. The ratio represents the number of days it takes short sellers on average to repurchase all the borrowed shares. The ratio is used by both fundamental and technical traders to identify trends.

The short interest ratio can also be calculated for entire exchanges to determine the sentiment of the market as a whole. If an exchange has a high short interest ratio of around five or greater, this can be taken as a bearish signal, and vice versa.

Read more about Short Interest Ratio:  Short Squeeze

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