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SEC Clears Major Asset Managers to Launch ETF–Mutual Fund Share Classes

Following the green light for Dimensional, the SEC has opened the door for other asset managers to offer ETFs and mutual funds as share classes of the same portfolio.

Rony Abboud
By Rony Abboud · December 18, 2025
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SEC Clears Major Asset Managers to Launch ETF–Mutual Fund Share Classes

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According to recent regulatory notices, the SEC has signaled greater openness to dual-share-class fund structures, allowing asset managers to offer ETF and mutual fund share classes within the same portfolio. Following approvals granted earlier this year to Dimensional Fund Advisors, several large firms have now received similar relief, including BlackRock and JPMorgan, with others such as Fidelity, State Street, and PIMCO also cleared.

The SEC typically grants these exemptions unless it determines that a hearing is warranted, paving the way for broader adoption of ETF and mutual fund share classes tied to a single investment strategy.

Dimensional Fund Advisors was an early mover, receiving similar approval last month and helping set the stage for broader adoption across the industry.

Asset managers can offer multiple share classes tied to the same underlying strategy. One class trades intraday like an ETF.

Another functions as a conventional mutual fund. Both sit inside the same portfolio. This setup allows investors to align access with their account type, liquidity needs, and investment preferences, without changing the strategy itself.

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Tax Efficiency Moves Center Stage

ETFs typically generate fewer capital gains thanks to in-kind redemptions. By pairing ETF and mutual fund share classes, managers can help investors reduce tax friction while maintaining a single investment engine. A taxable account may favor the ETF version. A retirement account may prefer the mutual fund share class. Same portfolio. Different wrappers.

Modernizing Mutual Funds, Not Replacing Them

ETFs have steadily captured share from mutual funds. Instead of abandoning mutual fund structures, large asset managers are upgrading them. Dual-share-class funds allow firms to remain competitive in an ETF-dominated market without duplicating products or splitting assets across parallel vehicles.

More Choice Also Means More Decisions

For investors, flexibility comes with added complexity. Multiple share classes introduce variables such as fees, trading behavior, and cash-flow dynamics. Advisors are likely to play a larger role in helping clients choose the most appropriate wrapper and integrate it efficiently into a broader portfolio.

Zooming out, the SEC’s approval signals broader regulatory openness to innovation in fund design. It also favors scale. Large firms with robust operational and compliance capabilities are best positioned to capitalize. Smaller managers may feel pressure to specialize, partner, or consolidate as product sophistication becomes the norm.

Please note this article is for information purposes only and does not in any way constitute investment advice. It is essential that you seek advice from a registered financial professional prior to making any investment decision.

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