The US Securities and Exchange Commission (SEC) is reportedly contemplating new regulatory measures for the Exchange Traded Fund (ETF) market, which has surged to $16 trillion. This move comes amid increasing scrutiny of various aspects of the ETF industry, including highly leveraged products, tax strategies, and novel fund structures. Over the past year, the SEC has demonstrated increased activity in regulating ETFs, as evidenced by recent actions.

One area of concern for the SEC is the proliferation of high-leveraged ETFs. In December 2025, the SEC issued warning letters to major ETF providers like Direxion, ProShares, and Tidal, effectively blocking new products designed to deliver three to five times the daily returns of underlying assets. The regulator indicated that these funds' risk exposures might exceed permissible limits, directing firms to revise their strategies or withdraw applications [bloomberg.com]. This indicates a proactive stance by the SEC to curb what it perceives as excessive risk in the market.

Another significant issue is the use of tax loopholes by ETFs, which are estimated to cost the US government approximately $48 billion annually. These savings disproportionately benefit high-income Americans, with the top 1% saving an average of $13,000 per year. The SEC has broadened the use of this tax loophole by granting permission for large asset management companies to add ETF share classes to existing mutual funds, a technique that was historically patented by Vanguard until 2023. This policy shift, especially with the approval of Dimensional Fund Advisors' US Micro Cap Portfolio's ETF share class, is expected to nearly double these tax savings [bloomberg.com].

Furthermore, the SEC has been actively addressing the structure of multi-class ETFs. In March 2026, the Commission granted conditional exemptive relief for multi-class ETFs, allowing open-end management investment companies to offer both ETF and mutual fund share classes. This decision, following numerous applications and a request from the Investment Company Institute, aims to reconcile operations with existing rules while providing relief from certain Exchange Act provisions [regulations.gov]. This regulatory development highlights the SEC's efforts to adapt to innovative fund structures while maintaining investor protection.