About Cerus Corporation (CERS) data
Data as of September 30, 2026.
Cerus Corporation (CERS) has 17.58M shares sold short as of the latest FINRA settlement report on September 30, 2026. Short interest has decreased by 2.30% compared with the prior settlement. At the current average daily volume, covering all open short positions would take about 8.03 days (days to cover).
Frequently asked questions
What is the current short interest in CERS?
As of the latest FINRA settlement dated September 30, 2026, CERS had approximately 17,580,423 shares sold short. Short interest data is reported by FINRA twice per month.
How much does it cost to short CERS?
The latest borrow fee (cost to borrow) for CERS is 0.41% per year, based on IBKR data. Fees can change throughout the trading day as shares are borrowed and returned.
What is the days to cover ratio for CERS?
Days to cover for CERS is approximately 8.03 days. This estimates how many trading days it would take short sellers to buy back all outstanding short shares at the current average daily volume.
Is CERS a short squeeze candidate?
A squeeze needs shorts that are hard to close. CERS trades about 2,188,865 shares a day and would take roughly 8.03 days to unwind current short positions, at a current borrow fee of 0.41%. Higher days-to-cover and a rising borrow fee together are the setup to watch; neither alone is enough.