Does Passive Investing Increase Market Volatility Risks
Passive investing could increase market volatility if it grows dominant enough, as fewer active traders would mean less efficient price discovery and sharper market swings. Some analyses suggest that once the passive share reaches around 65%, index volatility may rise sharply, and at 90% share, volatility could increase at cubic speed, leading to exaggerated boom and bust cycles. The current passive share is well below those thresholds. All funds combined make up about 30% of the US equity market, and of that 30%, roughly 54% are passive index funds, meaning passive funds account for approximately 16.2% of the total US equity market. That leaves a wide gap before reaching the proposed danger zone of 65%. Many users argue the market has a self-correcting mechanism. If passive investing created persistent mispricings, active investing would become more profitable, pulling capital back into active management and restoring balance. Others point out that active investors, even as a small percentage, still set prices, and passive funds simply follow those trends rather than driving them independently.
