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The Mast HedgeIndex Corporate Arbitrage ETF began trading on August 21 with an expense ratio of 0.00% and no AUM reported at launch. The fund's name indicates a focus on corporate arbitrage strategies, a category that typically seeks to capture pricing differentials arising from merger, acquisition, or other corporate events.

The STF Tactical Growth & Income ETF began trading on August 21 with an expense ratio of 0.00% and no AUM reported at launch. The fund is categorized as a tactical growth and income strategy, though no further structural detail was available at the time of listing.

The VanEck U.S. Equity Buffer ETF - July began trading on August 24 with an expense ratio of 0.50% and reported AUM of approximately $305,000 at launch. This is a defined-outcome fund structured to provide downside protection up to a buffer level while capping upside gains over a specified outcome period tied to U.S. equity performance.

The YieldMax Memory and Storage Portfolio Option Income ETF began trading on August 25 with an expense ratio of 1.01% and no AUM reported at launch. The fund is designed to generate income through options strategies applied to equities in the memory and data storage segment of the technology sector.

An estimated $6.520 billion left the iShares Core S&P 500 ETF in the week ending August 26, representing an estimated 0.729% of the fund's AUM of approximately $883.9 billion; these figures are estimates derived from AUM changes adjusted for market movement and are not official flow data. IVV also tracks the S&P 500 and is among the three largest ETFs by AUM, making the estimated outflow notable against the concurrent estimated inflow recorded for the similar VOO fund.

An estimated $6.950 billion flowed into the Vanguard S&P 500 ETF in the week ending August 26, representing an estimated 0.409% of the fund's AUM of approximately $1.70 trillion; these figures are estimates derived from AUM changes adjusted for market movement and are not official flow data. VOO tracks the S&P 500 index of large-cap U.S. equities and is one of the most widely held ETFs, routinely attracting substantial weekly inflows.

An estimated $8.545 billion left the Vanguard Total International Stock ETF in the week ending August 26, representing an estimated 1.322% of the fund's AUM of approximately $646.2 billion; these figures are estimates derived from AUM changes adjusted for market movement and are not official flow data. VXUS holds equities across developed and emerging markets outside the United States, and the estimated outflow represents a notable weekly shift relative to the fund's typical flow profile.

An estimated $11.137 billion flowed into the Vanguard Total Stock Market ETF in the week ending August 26, representing an estimated 0.484% of the fund's AUM of approximately $2.30 trillion; these figures are estimates derived from AUM changes adjusted for market movement and are not official flow data. VTI is a broad-market fund covering the entire investable U.S. equity market, and the estimated inflow is consistent with steady accumulation typical of this fund.

An estimated $13.998 billion left the Invesco QQQ Trust in the week ending August 26, representing an estimated 2.808% of the fund's AUM of approximately $480.78 billion; these figures are estimates derived from AUM changes adjusted for market movement and are not official flow data. QQQ tracks the Nasdaq-100 index of large non-financial U.S.-listed companies, and the estimated outflow ranks among the larger single-week movements relative to the fund's size.

The Global X Cybersecurity ETF closed at $39.98 on August 26, gaining 1.70% on the day, with AUM of approximately $1.44 billion. This fund holds companies whose primary business involves cybersecurity products and services, and its year-to-date gain of 29.05% is the highest among the funds in this group.

The Global X Silver Miners ETF closed at $100.63 on August 26, declining 2.11% on the session, with AUM of approximately $5.44 billion. This fund tracks equity securities of companies involved in silver mining globally, and the day's loss still leaves the year-to-date return at 23.08%.

The VanEck Junior Gold Miners ETF closed at $132.86 on August 26, falling 2.24% on the day, with AUM of approximately $9.95 billion. This fund focuses on smaller-capitalization gold and silver mining companies globally, and despite the pullback it retains a year-to-date gain of 19.44%.