Glossary
Days to cover estimates how many trading days it would take short sellers to buy back their borrowed shares, based on recent volume.
Days to cover (the short-interest ratio) divides the number of shares sold short by the average daily trading volume. A reading of 5 means it would take roughly five normal days of buying for shorts to close their positions.
A higher ratio means a more crowded short and, in theory, more fuel for a sharp rally if the position unwinds. FINRA publishes short interest twice a month, so the data is a snapshot, not a live feed.
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