ProShares Ultra Top QQQ (QQUP) is an exchange-traded fund (ETF) managed by ProShare Advisors LLC that seeks daily investment results, before fees and expenses, corresponding to two times (2x) the daily performance of the Nasdaq-100 Top QQQ Index, a modified equal-weighted index of the 100 largest non-financial companies listed on the Nasdaq Stock Market; it offers leveraged exposure to leading technology and growth-oriented stocks, including major holdings such as Apple, Microsoft, Nvidia, and Amazon, through swap agreements, futures contracts, and direct securities ownership. The fund's primary products include leveraged and inverse ETFs across asset classes like equities, fixed income, commodities, and volatility; notable offerings encompass the UltraPro QQQ (TQQQ) for 3x long exposure, UltraShort QQQ (QID) for 2x inverse exposure, and specialized sector funds targeting semiconductors, biotechnology, and cybersecurity; ProShares provides over 140 ETFs in total, categorized into leveraged, inverse, and "Ultra" variants for short-term tactical trading by sophisticated investors. Headquartered in Bethesda, Maryland, ProShares was founded in 2006 as part of ProFunds Group and operates globally with listings on U.S. exchanges, targeting institutional and retail investors seeking amplified returns or hedges in volatile markets. In recent developments, ProShares launched the Ultra Top QQQ ETF (QQUP) in late 2024 to capitalize on the equal-weighted Nasdaq-100 segment amid surging AI and tech sector performance; the firm expanded its suite with new volatility and bitcoin-linked ETFs in 2025, alongside a strategic partnership with major swap counterparties to enhance liquidity; no major acquisitions or name changes were reported for ProShares or QQUP within the last two years.