JPMorgan Asset Management is now the world’s largest issuer of actively managed exchange-traded funds, controlling $268.7 billion in active ETFs with a 12.5% global market share. The shift, confirmed in early-2026 industry reporting, ended Dimensional Fund Advisors’ multi-year run at the top and reshaped what an active-ETF league table looks like at the start of 2026.
The numbers, per Bloomberg and industry-tracker FundsSociety:
- JPMorgan: $268.7B AUM, 12.5% market share — #1
- Dimensional: $286.3B AUM (still slightly higher in absolute, but JPM leads inflows) — #2
- BlackRock iShares: $128.5B, 6% — #3 by share
Active ETF assets crossed $1.6 trillion globally by late 2025, and JPMorgan’s lead in net inflows for 18 of the past 24 months is what drove the league-table change. Dimensional’s actual AUM remains marginally higher; the title flips on flow trajectory. By Q2, Dimensional may pass back if its early-2026 share-class conversion gathers steam. The race is genuinely close.
For practitioners, the more interesting story sits inside the asset numbers. Two structural shifts explain why the top of the active-ETF table is moving at all.
How JPMorgan got here
JPMorgan’s active ETF strategy did not start with a flagship launch. It started with JEPI (JPMorgan Equity Premium Income ETF) and the firm’s broader options-overlay franchise, which captured retail and advisor flows during the 2022-2023 rate cycle when income strategies were in demand.
The firm then layered on:
- A wide product range of factor, value, and core equity active ETFs that complement JEPI’s income tilt
- Aggressive distribution through advisor-platform programs, model-portfolio placements, and SMA wrappers
- A consistent message that active management can deliver inside the ETF wrapper at fees that compete with passive
The lesson Dimensional, which arrived earlier and has a deeper academic-research lineage, did not internalize as quickly: active ETFs are a distribution game first. The firm with the most aggressive advisor outreach and the cleanest operational shelf wins flows even when its product is not noticeably better. JPMorgan ran that play and now leads.
Dimensional’s response
Dimensional Fund Advisors did something in March 2026 that signals the firm is not ceding territory. On March 20, 2026, the firm launched the first actively managed ETF share class in U.S. history — the Dimensional US Micro Cap ETF, structured as a share class of the firm’s existing US Micro Cap Portfolio mutual fund (which dates to 1981). Markets Media covered the launch as a watershed moment.
The structure matters. Dimensional now operates the same portfolio as both a mutual fund (for retirement plans, sub-advisory, and existing institutional relationships) and an ETF (for advisor model portfolios, retail brokerage, and tax-managed accounts). The track record and tax basis carry across both vehicles. As we covered in our piece on the Thornburg ETF share class launch, this structure is the most important regulatory development for active managers since the patent expired in 2023.
Dimensional has three more share-class launches in the pipeline through Q3, and the firm has been explicit that the goal is to convert its full lineup over twenty-four months. If that calendar holds, Dimensional’s active ETF AUM grows quickly without requiring net new sales — existing mutual fund holders simply gain a more tax-efficient wrapper option.
The 30-firm SEC approval
The other piece of context is the SEC’s bulk approval of dual share-class structures for 30 fund companies in late 2025 and early 2026. The list includes:
- BlackRock
- JPMorgan Chase
- Fidelity Investments
- State Street
- Morgan Stanley
- and 25 other major fund houses
What used to require firm-by-firm exemptive relief is now a streamlined approval pipeline. The 100+ filings we noted in our earlier coverage are clearing the regulatory bottleneck. By the end of 2026, expect 200-300 active mutual funds to be available in dual-class form, and another 500+ in the pipeline for 2027.
The strategic implication for the active-ETF league table: the field expands fast. JPMorgan’s #1 ranking holds for now because the firm built its lead on standalone ETF launches, but BlackRock’s $11 trillion of mutual fund AUM and Fidelity’s similarly massive book give them rapid catch-up potential through share-class conversions of existing flagships.
What advisors are buying
The mix of active ETF flows in early 2026 tells its own story:
- Income strategies — JEPI, JEPQ, and similar options-overlay products continue to lead net inflows
- Active core equity — flagship growth and value strategies repackaged as ETFs
- Active fixed income — short-duration and unconstrained bond ETFs gaining shelf space
- Factor-based active — quantitative tilts that fall between pure passive and traditional active
Advisors moving model portfolios from passive-only to “active-active core, passive satellites” are responsible for a meaningful share of the flow. The argument for hybrid construction has strengthened as fixed income volatility has remained elevated and equity factor performance has been less reliable than the post-2010 bull market suggested.
What this means for the asset manager hierarchy
The active ETF league table is becoming a proxy for which fund managers are positioned for the next decade. Three observations.
First, JPMorgan’s lead is not insurmountable but it is meaningful. The firm’s distribution machine, advisor outreach, and product velocity are real competitive moats. Other large active managers will close the gap through share-class conversions, but the marketing and platform-relationship investments JPMorgan has made will compound.
Second, Dimensional’s response — converting its mutual fund lineup to dual-class form — is the right structural move and may close the AUM gap by 2027. But Dimensional has historically run a thinner sales organization than JPMorgan, and the question is whether the firm reinvests in distribution to match the product strength.
Third, the field beyond JPMorgan and Dimensional is fragmenting fast. BlackRock, Capital Group (the recent Broadridge brand-ranking #2), Fidelity, T. Rowe Price, and Vanguard all have competitive active-ETF launches in 2026. The next twelve months produce a shakeout where the firms with both product and distribution scale capture the bulk of the flows, and the rest fight for the remainder.
The broader migration
Active ETF growth is one symptom of the deeper story we have been documenting for weeks: the Great Migration out of legacy mutual funds and into ETF wrappers. The migration does not threaten active management. It threatens the mutual fund wrapper. JPMorgan’s #1 active-ETF position is the most visible case of an active manager profiting from the shift rather than fighting it.
The implication for plan sponsors and advisors is concrete. Model portfolios built three years ago on traditional active mutual funds need an annual review against the equivalent active ETF available today. In many cases the ETF version of the same strategy carries a lower expense ratio and meaningfully better tax efficiency. The conversation with clients is no longer about active versus passive; it is about which active wrapper.
What to watch through Q2 and Q3
Three concrete signals.
The first is whether Dimensional’s share-class conversions accelerate enough to retake the lead by mid-year. If yes, the league-table volatility continues. If no, JPMorgan consolidates.
The second is BlackRock’s positioning. The firm has the resources to reorganize its iShares franchise around active ETFs in twelve months and could vault to #1 or #2 with a focused push. Watch for senior personnel moves and product-line reorganization announcements.
The third is whether the Federated Hermes / PIMCO / Capital Group tier — large active managers without strong existing ETF presence — files share-class conversions on flagship strategies. Each conversion is a minor news event individually, but in aggregate they reshape the competitive map.
Three questions to bring to the next investment meeting
For advisors working through model-portfolio refreshes:
Has the firm’s active core equity sleeve been compared against JEPI, JPST, JIRE, or the comparable JPMorgan active ETF in the past six months?
For active fixed-income exposure, has the model considered Dimensional’s converted share-class ETFs as a tax-managed alternative to traditional mutual funds?
For new client portfolios, is the default construction starting from active ETFs or from passive ETFs with active satellites? The answer shapes both performance and after-tax outcomes.
The active ETF league table is no longer a niche industry data point. It is a rough leaderboard for which asset managers are positioned to win the post-mutual-fund era. Right now, JPMorgan is on top.
Sources: Bloomberg on JPMorgan eclipsing Dimensional; Markets Media on US dual share-class wave; Funds Society on asset manager brand image; Financial Planning on dual ETF share classes; Advisor Perspectives on Dimensional’s tax-busting model.
