Merrimack Pharmaceuticals, Inc (MACK) — Short Interest History
The most recent FINRA short interest report for MACK (settlement date May 15, 2024) shows 861,320 shares sold short , a change of 2.23% from the prior report .
Days to cover: 1.86.
Frequently asked questions
What is short interest in MACK?
Short interest is the total number of MACK shares currently sold short but not yet covered or closed out. FINRA publishes this data twice monthly.
How is MACK short interest calculated?
Short interest is aggregated from member firm reports to FINRA. Every U.S. broker-dealer must report aggregate short positions in each security as of the 15th and last trading day of each month.
What does a high short interest mean?
Higher short interest can indicate bearish sentiment, but it also raises the potential for a short squeeze if positive news forces short sellers to cover their positions simultaneously. Compare short interest to float (short percent of float) for context.