Vanguard's VOO ETF, which tracks the S&P 500 index, has surpassed $1 trillion in assets, becoming the first ETF to reach this milestone. A net inflow of approximately $1.7 billion in the latest trading day propelled the fund across the trillion-dollar mark, further demonstrating the continued appeal of passive investment products in the US stock market.

Top earners this year

Since the beginning of this year, VOO has attracted over $69 billion in inflows, ranking first among global ETFs. During the same period, the S&P 500 index has risen by approximately 11%, repeatedly hitting new highs. The net inflows and index gains have jointly boosted the fund's total size.

For the past two years, VOO has achieved annual net inflows exceeding $100 billion. Since its inception in 2010, the fund has maintained a net inflow every year. Stable market demand for long-term allocation to US stocks is a key reason for its continued expansion.

• The latest trading day saw a net inflow of approximately $1.7 billion.
• Since 2026, there has been a cumulative net inflow of over US$69 billion.
• The S&P 500 rose approximately 11% over the same period.

Low fees drive market share expansion

The expansion of VOO also reflects the changes in the ETF industry over the past three decades. ETFs have gradually transformed from a niche tool into a commonly used allocation product for institutional and individual investors. Lower management fees, tax efficiency, and strong liquidity are the main reasons for the rapid popularization of these products.

Throughout this process, Vanguard has consistently adhered to a low-fee strategy, driving the industry to continuously reduce product costs. As more brokerage platforms expand their ETF distribution reach, Vanguard has also leveraged this channel to further broaden its product coverage.

VOO surpassed State Street's SPY at the beginning of last year to become the world's largest ETF. Market analysts believe that more and more long-term investors are viewing VOO as a tool that can directly complete core allocations in US stocks, which has helped it continue to expand its leading advantage.

Pioneer is getting closer to becoming the industry leader.

VOO crossing the trillion-dollar mark is also a significant milestone in Vanguard's own development. Founded by Jack Bogle, Vanguard's low-cost index investing philosophy has long influenced the global asset management industry. Today, this philosophy is further amplifying its influence through ETF products.

As VOO continues to attract funds, Vanguard is closing in on BlackRock in the race to become the world's largest ETF issuer. For the entire industry, this milestone represents not only a single product but also signifies that ETFs have evolved from supplementary tools into core products within the global asset allocation system.

Additional information:The article also mentions that the market expects a large IPO this year, including SpaceX, and passive funds may provide more potential funding for related new stock issuances.