A notable surge in the launch of exchange-traded funds (ETFs) has prompted concerns among investors regarding the sustainability of the expanding market. According to Drew Pettit, a U.S. Equity Strategist at Citigroup, quoted by Reuters, the current level of new ETF launches may not be viable long-term, potentially leading to a wave of closures and product rationalization.
ETFs have gained immense popularity among stock investors, offering a simplified route into financial markets. However, the rapid growth in this sector could instigate challenges that may affect the broader stock market. With increasing competition among ETFs, many smaller funds—often characterized by higher expense ratios—may struggle to attract sufficient investor capital, raising the risk of closures.
In the event of an ETF shutting down, fund issuers are required to announce the closure in advance, providing investors time to divest. Following a delisting, the ETF liquidates its assets and distributes the proceeds to shareholders based on their ownership share, which is considered a taxable event.
While the closure of a single ETF typically wouldn’t pose a significant threat to the stock market, a series of shut-downs could create widespread high liquidation, exerting downward pressure on stock prices. Investors would recoup their capital and could reinvest in similar ETFs or directly purchase shares of individual stocks. The impact of a closure would vary widely depending on the ETF’s size; for instance, the discontinuation of a major fund like the Vanguard S&P 500 ETF, which manages over $1 trillion in assets, would be a significant liquidity event, whereas a fund with only $100 million in assets would likely go unnoticed.
Liquidity challenges may arise for the stock market particularly if large ETFs experience substantial outflows—when more capital exits the fund than enters it. Panic selling, particularly during market downturns, can exacerbate selling pressures on ETFs, as seen during President Donald Trump’s tariff initiatives early in his second term.
Moreover, a heavy reliance on ETFs can lead to overvaluation among equities. Many leading ETFs track benchmarks such as the S&P 500 or Nasdaq Composite, which allocate shares based on market capitalization. Consequently, popular stocks—often referred to as the “Magnificent Seven”—can rally without proportionate earnings growth, driven solely by inflows into index funds. This dynamic can create inflated stock prices, leaving them vulnerable to significant declines during economic downturns.
Despite these challenges, the reliance on ETFs is unlikely to precipitate a market crash. Younger investors have successfully navigated market downturns in 2020 and 2022, while older investors recall various market cycles. Those concerned about the proliferation of ETFs may consider investing in individual stocks, particularly smaller-cap companies with rising revenues, which often receive less attention from ETF issuers until they achieve larger market caps.
For those less comfortable with stock picking, larger ETFs that track benchmarks like the S&P 500 or Nasdaq Composite may be more suitable. These established funds are less likely to face liquidation and generally offer lower expense ratios compared to smaller, emerging ETFs.

