US Treasury 12 Month Bill ETF (OBIL) Open Interest History

Open interest tracks the total number of outstanding options contracts. Rising OI alongside price moves can indicate growing commitment to the trend; declining OI suggests positions are being closed.

US Treasury 12 Month Bill ETF (OBIL) operates in the Financial Services sector, specifically the Asset Management - Bonds industry, with a market capitalization near $301.2M, listed on NASDAQ, carrying a beta of 0.07 to the broader market. Under typical market environments, the fund's adviser endeavors to fulfill its investment goal by committing a minimum of 80% of the UST 12 Month Bill Fund's net assets (along with any capital borrowed for investment) to the specific securities that comprise its benchmark index. public since 2022-11-15.

Open interest history tracks how outstanding options contracts change over time. No recent options activity for OBIL as of 2026-07-17; this typically reflects low options liquidity, a recently listed name, or a temporary data feed delay. Snapshot will refresh on the next active session.

Learn how open interest is reported and how to read the data →