The iShares MSCI World ETF: Gold Medal Portfolio Faces a Fee Squeeze and Index Earthquake

URTH earns five-star Morningstar rating and Gold medal, but faces fee pressure from Invesco and a major MSCI index reform in May 2026 that could reshape its risk profile.

The iShares MSCI World ETF (URTH) has just been awarded the highest accolade from Morningstar — a five-star rating and a Gold medal — yet the fund is heading into what could be its most consequential period since inception. While the long-term numbers are impressive, the immediate outlook is anything but settled.

A One-Year Return That Turns Heads

URTH has delivered a 29.14% total return over the past twelve months, with an annualized three-year gain of roughly 20%. Since its launch in January 2012, the fund has compounded at an average of 12% per year. Those figures place it firmly among the top performers in its category.

The portfolio, which held around $7.86 billion in assets as of early May 2026, is heavily tilted toward US equities — over 60% of the fund. Technology is the dominant sector, with NVIDIA the largest single holding at 5.55%, followed by Apple at 4.56% and Microsoft at 3.29%. The top ten positions, which also include Amazon, Alphabet, and Meta, together account for roughly 27% of assets.

Yet the valuation metrics suggest investors are paying up for that quality. The trailing price-to-earnings ratio stands at 25, while the price-to-book ratio hovers near 4. The dividend yield is a modest 1.53%, paid semi-annually — this is a growth vehicle, not an income generator.

The Fee War Heats Up

URTH’s expense ratio of 0.24% has long been competitive for a broad global equity ETF. But Invesco changed the game on April 1 by slashing the fee on its competing MSCI World ETF to just 0.05%. That 19-basis-point gap is now wide enough to make cost-conscious investors sit up and take notice.

The pressure is mounting. URTH currently has 297 rival ETFs in its wake, but the fee differential could begin to erode that lead, particularly among institutional allocators who weigh costs heavily.

An Index Overhaul That Could Reshape Everything

The bigger story, however, is the MSCI index reform scheduled for May 2026. It is being described as one of the most significant methodological changes in the history of the MSCI World index. The core of the revision: a recalculation of the free float for every index member.

Under the new system, the freely tradable portion of each stock will be classified into three categories — high, low, and very low. Changes in rounding could shift the index weights of individual mega-cap stocks. The May revision is expected to generate far more movement than the relatively tame March update.

For a fund that tracks the MSCI World, the implications are direct. If the reform concentrates weight further into the largest names — already a concern given that information technology, financials, and industrials dominate the sector breakdown — the risk profile of the ETF could shift materially.

The SpaceX Wildcard

Adding to the complexity is the potential IPO of SpaceX, expected in the second half of 2026 on the Nasdaq, with a valuation around $1.75 trillion and an offering size exceeding $75 billion. The ripple effects for passive funds could be enormous.

Nasdaq has already introduced a rule allowing inclusion in the Nasdaq-100 after just 15 trading days. FTSE Russell is exploring a similar fast-track mechanism. S&P Dow Jones Indices plans to shorten waiting periods and eliminate profitability requirements. All three are preparing for a wave of large IPOs.

For URTH, the critical question is whether and when SpaceX enters the MSCI World. MSCI has modeled how the largest private venture-backed companies would reshape the MSCI ACWI IMI: a higher US weight, and a stronger tilt toward application software and aerospace & defense. If the index reform and a SpaceX inclusion coincide, the rebalancing flows for passive funds could run into the billions.

What May Bring

The net asset value per share stood at roughly $196 in early May, down 0.6% on the 4th. The fund has started the year with a solid but unspectacular gain of nearly 5%. Whether that pace accelerates or stalls depends in part on the upcoming quarterly results from NVIDIA and Microsoft, both expected in May.

The combination of a fee war, an index overhaul, and a potential mega-IPO creates a rare moment of uncertainty for a fund that has been a steady, low-cost workhorse for global equity exposure. The May rebalancing will provide the first real test of how the new index methodology plays out in practice — and whether URTH can maintain its gold-medal standing in a rapidly changing landscape.