ProShares Nasdaq-100 Dynamic Buffer ETF (QB) is an exchange-traded fund that seeks daily investment results corresponding to the Nasdaq-100 Dynamic Buffer Index, providing upside participation in the Nasdaq-100 Index with downside mitigation through a dynamic buffer strategy involving weekly options, including a short call, long put, and short put one day from maturity; capped gains; and lower volatility relative to the underlying index. The fund holds a portfolio mirroring the Nasdaq-100 constituents such as NVIDIA Corp, Apple Inc, Microsoft Corp, Broadcom Inc, and Amazon.com Inc, alongside index swaps and options positions, with an expense ratio of 0.58% and quarterly distributions. Launched on June 24, 2025, and headquartered with its sponsor ProShare Advisors LLC in Bethesda, Maryland, QB operates primarily in the U.S. market, targeting investors seeking defined outcome strategies in the technology-heavy Nasdaq-100 segment. In recent developments, ProShares, the issuer established in 2006 as part of ProFunds Group founded in 1997, has expanded its lineup with launches including single-stock leveraged ETFs like ProShares Ultra CRCL targeting 2x daily returns of Circle in August 2025 and ProShares Ultra COIN for Coinbase in September 2025, alongside forward and reverse share splits on 22 ETFs announced in November 2025.