AltShares Merger Arbitrage ETF (ARB) 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.

AltShares Merger Arbitrage ETF (ARB) operates in the Financial Services sector, specifically the Asset Management industry, with a market capitalization near $104.5M, listed on AMEX, employing roughly 207 people, carrying a beta of 0.03 to the broader market. ARB is the first ETF by AltShares Trust and the first merger arbitrage fund that hedges foreign currency exposure. Led by Gregg Felton, public since 2020-05-11.

Open interest history tracks how outstanding options contracts change over time. No recent options activity for ARB 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 →