The global exchange-traded fund (ETF) market has undergone a transformative shift over the past decade, with index-tracking funds now commanding over $3 trillion in assets under management, according to Bloomberg data. The Vanguard S&P 500 ETF (VOO), now trading under its current name, has surpassed $1 trillion in AUM, reaching $1.07 trillion by mid-September 2026. This milestone marks VOO’s fifth anniversary of crossing the $1 billion threshold, underscoring its dominance as the largest S&P 500 ETF in the U.S. market. Its rivals, the iShares Core S&P 500 ETF and SPDR S&P 500 ETF Trust, hold $864 billion and $694 billion, respectively, illustrating VOO’s lead by approximately $180 billion in assets as of that date.
The rise of ETFs reflects broader trends in passive investing, driven by cost efficiency and operational simplicity. Founded in 1976 by John Bogle of Vanguard, the first U.S. index fund—originally called the Vanguard 500 Index Fund—was initially met with skepticism. Critics argued that investors would settle for mediocrity by replicating broad market indices rather than pursuing individual stock outperformance. That skepticism proved unfounded. By June 2026, VOO had already surpassed $1 billion in AUM, and by mid-September 2026, it had grown to $1.07 trillion, cementing its status as the world’s largest ETF. Morningstar’s Daniel Sotiroff noted that VOO had once been considered a niche player, with $225 billion in assets in 2021—compared to its rivals’ $360 billion and $340 billion, respectively. The ETF’s growth trajectory has been particularly rapid in recent years, reflecting a broader shift toward passive investing strategies.
ETFs have also expanded far beyond traditional equity indices. In the U.S., there are now over 5,200 ETFs listed, outpacing the roughly 3,200–3,400 U.S. publicly traded companies. This proliferation includes leveraged ETFs, which replicate indices with 2x or 3x daily exposure. For example, a 2x ETF gains 2% for every 1% rise in its benchmark index, while a 3x ETF gains 3%. Conversely, a decline of 1% in the index results in a 2% or 3% loss for the ETF. Such products have become a key driver of ETF growth, particularly in speculative or leveraged strategies.
Switzerland’s ETF market has mirrored this trend. As of mid-September 2026, there are 320 ETFs listed on Swiss exchanges, surpassing the 230 companies included in the Swiss Performance Index (SPI). The iShares Swiss Dividend ETF, tracking the SPI Select Dividend 20 Index, is one of the most popular. This index selects the 20 SPI constituents with the most reliable dividend payouts, weighted by market capitalization, float, and dividend yield. Leading positions include Zurich Insurance and Roche (each at 15%), Nestlé and Novartis (each at 14%), and Swiss Re and Holcim (each at 10%).
The debate over ETFs versus traditional active mutual funds persists. While active funds offer professional management and the potential for outperformance, ETFs excel in cost efficiency and transparency. A 1% higher annual expense ratio can erode 100% of a 20-year gain, according to studies. Additionally, research shows that most active fund managers fail to consistently beat their benchmarks over extended periods. For investors prioritizing low fees and broad market exposure, ETFs remain a compelling alternative to actively managed funds.
This growth underscores ETFs’ role as a cornerstone of modern portfolio construction, blending accessibility, cost-effectiveness, and diversification—making them a preferred choice for institutional and retail investors alike.
