Greece and Vietnam Set to Reshape the Vanguard All-World ETF as Tech Rally and Oil Shock Collide

The €35B Vanguard ETF faces Greece and Vietnam index upgrades, a US tech-driven rally, and geopolitical risks from Iran as oil tops $107.

The world’s most popular global equity tracker is being pulled in multiple directions at once. The Vanguard FTSE All-World UCITS ETF, which manages nearly €35 billion in assets, is navigating a rare confluence of structural index changes, a blistering US tech rally, and escalating geopolitical turmoil in the Middle East.

A New Frontier for Emerging Markets

FTSE Russell has confirmed that Greece will be reclassified as a developed market on September 21, 2026, while Vietnam will ascend from frontier to secondary emerging market status on the same date. Both countries will then be included in the FTSE All-World Index, which combines developed and emerging market components.

Vietnam’s promotion follows sweeping regulatory reforms. Foreign institutional investors no longer need to pre-fund securities purchases, the country has introduced a new broker model, and procedures for failed trades have been standardized. The market’s reaction has been dramatic: Vietnam’s benchmark index surged roughly 50 percent in 2025 alone.

To avoid market disruption, FTSE Russell will phase in Vietnamese stocks gradually over several tranches starting from the reclassification date. Once fully integrated, Vietnam is expected to account for just 0.02 percent of the global index — a small but symbolically significant addition.

The US Juggernaut Rolls On

For now, however, the ETF’s performance is overwhelmingly driven by its largest single-country exposure. The United States accounts for roughly two-thirds of the underlying index, and the recent rally there has been nothing short of spectacular. The S&P 500 climbed more than nine percent in April, while the tech-heavy Nasdaq surged over 15 percent.

Earnings season has provided much of the fuel. Alphabet, Amazon, Meta, and Microsoft — all among the fund’s top holdings — are set to report this week, and their results will determine near-term direction. So far, the picture is bright: more than 84 percent of US companies have beaten expectations.

The Vanguard ETF itself is trading at €153.64, just shy of its 52-week high of €154.04, with a 12-month gain of roughly 27 percent.

Oil at $107 Casts a Shadow

Yet the rally is not without risks. Iran has seized two container ships, and the strategically vital Strait of Hormuz remains closed. Brent crude has surged past $107 per barrel, injecting a fresh dose of uncertainty into global markets.

For a broadly diversified fund, the oil spike cuts both ways. Energy companies within the portfolio benefit from higher prices, but rising fuel costs reignite inflation fears that weigh on interest-rate-sensitive growth stocks. It is a tension that the ETF’s passive structure must absorb without the luxury of active adjustment.

Central Banks Hold Their Fire

The Federal Reserve takes center stage this Wednesday. Markets expect rates to remain unchanged, with this likely being Jerome Powell’s final meeting before Kevin Warsh takes over in May.

Across the Pacific, the Bank of Japan meets on April 27 and 28. Given the global uncertainty, analysts do not anticipate a rate hike. That is welcome news for the ETF, given Japan represents roughly five percent of the portfolio — the second-largest country allocation after the US.

A Lean, Efficient Machine

The Vanguard fund does not hold all 4,200 stocks in the index. Instead, it uses optimized sampling to maintain a representative portfolio while keeping costs low. The annual expense ratio stands at 0.19 percent, and as a distributing variant, dividends are automatically reinvested.

The next routine index rebalancing is scheduled for June, when FTSE Russell will adjust weightings to reflect the recent tech boom and energy price shifts. But the bigger structural overhaul comes in September 2026, when Greece and Vietnam officially join the global equity map.