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Shares sold short

Average daily volume

Float (shares available)optional

Results

Short interest ratio (days to cover)4normal

Days to cover estimates how many average trading days short sellers would need to buy back their positions. High readings mean crowded shorts: bearish conviction, but also fuel for a short squeeze if price rises.

Not financial advice. Results are estimates based on the values you enter and simplified assumptions; real trades are affected by fees, slippage, gaps and other factors. Trading involves substantial risk of loss. Read the full disclaimer.

How to calculate the short interest ratio

Short interest ratio (days to cover) = Shares sold short ÷ Average daily volume Short % of float = Shares sold short ÷ Float × 100

Worked example

2,000,000 shares short and 500,000 average daily volume → 4 days to cover.
100,000 short and 1,000,000 daily volume → 0.1 days: shorts could exit almost instantly.

How to interpret the short interest ratio

High days-to-cover (often above 5–8) means a crowded short. It reflects bearish conviction, but also squeeze potential: if price rises, short sellers racing to cover can drive it up sharply. Low values mean shorts have little influence on price.

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Short Interest calculator FAQ

Where do I get short interest data?

Exchanges publish it periodically (twice a month in the US); many data providers republish it.

Does high short interest guarantee a squeeze?

No. Shorts are often right. A squeeze needs a catalyst that forces covering.