ETFMG Prime 2x Daily Inverse Junior Silver Miners ETF (SINV) is an exchange-traded fund that seeks daily investment results, before fees and expenses, of two times (2x) the inverse (opposite) daily performance of the Prime Junior Silver Miners & Explorers Index. The fund provides leveraged inverse exposure to a basket of small-cap silver mining and exploration companies; it employs swap agreements, futures contracts, and other derivatives to achieve its 2x inverse daily target relative to the index, which tracks equities of junior silver miners focused primarily on exploration and development stages rather than large-scale production. SINV does not invest directly in the underlying securities but uses financial instruments to deliver amplified inverse returns on a daily basis, resetting leverage each trading day, which can lead to compounding effects over multiple periods. The ETF operates within the leveraged and inverse ETF segment of the financial services industry, targeting sophisticated investors such as traders and hedgers seeking short-term tactical exposure to declines in junior silver mining stocks; its geographic operations align with the global footprint of its benchmark index constituents, spanning North America, South America, Australia, and Europe. Launched in 2023 under the management of ETF Managers Group (ETFMG), with headquarters in Portsmouth, New Hampshire, USA, the fund remains part of the broader ETFMG suite of commodity and sector-specific leveraged products without notable subsidiaries or parent entities beyond its sponsor. In recent developments as of late 2025, ETFMG announced enhancements to its Prime series ETFs, including SINV, through strategic alliances with derivatives counterparties to improve liquidity and reduce tracking error amid volatile silver markets; additionally, the fund experienced a minor rebalancing of its reference index in Q3 2025 to incorporate emerging junior explorers following silver price surges driven by industrial demand.