ProShares Merger ETF (MRGR) is an exchange-traded fund that seeks to track the performance, before fees and expenses, of the S&P Merger Arbitrage Index, providing exposure to a rules-based merger arbitrage strategy focused on price changes associated with publicly announced mergers, acquisitions, and corporate reorganizations. The fund maintains a portfolio typically comprising around 40 companies, with long positions in target firms and short positions in acquiring firms, supplemented by index swaps, currency hedges for international exposures, and cash equivalents; it features a net expense ratio of 0.75%, quarterly distributions, and quarterly rebalancing to reflect current deal spreads across sectors including industrials, health care, financials, and communication services. Launched on December 11, 2012, and listed on Cboe BZX, MRGR targets institutional and retail investors seeking low-volatility alternative returns uncorrelated with broader equities, with operations managed from ProShares' headquarters in Bethesda, Maryland, by ProShare Advisors LLC, a firm founded in 1999 specializing in innovative ETFs. Recent performance as of late 2025 shows year-to-date NAV returns of approximately 11.44% and one-year returns of 12.00%, reflecting heightened global M&A activity; the fund continues to hold a diversified basket of deals, including positions in Anywhere Real Estate Inc., Avadel Pharmaceuticals, Axalta Coating Systems, Warner Bros. Discovery, and New Gold Inc., amid no reported closures, liquidations, or strategic shifts specific to MRGR within the last two years, though ProShares as issuer announced broader ETF lineup adjustments and share splits in prior periods.