WisdomTree U.S. Efficient Core (NTSX) — Short Interest History
The most recent FINRA short interest report for NTSX (settlement date June 15, 2026) shows 39,029 shares sold short , a change of 82.11% from the prior report .
Days to cover: 0.72.
Frequently asked questions
What is short interest in NTSX?
Short interest is the total number of NTSX shares currently sold short but not yet covered or closed out. FINRA publishes this data twice monthly.
How is NTSX 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.