Schwab 1000 Index ETF (SCHK) is an exchange-traded fund that seeks to track the total return of the Schwab 1000 Index, a float-adjusted, market capitalization-weighted benchmark comprising the 1,000 largest U.S.-listed stocks by market capitalization and covering approximately 90% or more of total U.S. stock market capitalization. The ETF provides passive exposure to a diversified portfolio across sectors including information technology (33.64%), financials (13.69%), consumer discretionary (10.60%), and communication services (9.66%), with top holdings such as NVIDIA Corp. (6.76%), Apple Inc. (6.40%), and Microsoft Corp. (5.55%). Launched on October 11, 2017, and managed by Charles Schwab Investment Management, Inc., the fund trades on NYSE Arca with a total net asset value of approximately $4.82 billion, an expense ratio of 0.03%, and quarterly dividend distributions. SCHK serves individual and institutional investors seeking low-cost, tax-efficient core equity allocation to large-cap U.S. equities, primarily through creation and redemption of shares with authorized participants. Headquartered in Westlake, Texas, as part of The Charles Schwab Corporation's asset management operations, the ETF operates exclusively in the United States market. Recent developments include a 2-for-1 forward share split effective October 10, 2024, which increased shares outstanding while reducing net asset value per share without altering total shareholder value; a reduction in the operating expense ratio to 0.05% (subsequently 0.03%) announced in June 2025 alongside other Schwab equity index ETFs; and participation in a broader Schwab Asset Management announcement of forward share splits across 20 ETFs.