Strategists at JPMorgan Chase have issued a cautionary note regarding the stock market, specifically warning of potential flash crash scenarios stemming from the growing concentration in speculative trades, particularly in momentum stocks. While the bank remains optimistic overall about the stock market’s trajectory, having increased its year-end price target for the S&P 500 to 7,800, concerns loom over the immediate future.
Momentum stocks—those that have experienced rapid price increases—have seen exceptional gains, largely driven by rampant enthusiasm surrounding artificial intelligence (AI) technologies, especially in sectors like semiconductors and memory. The Invesco S&P 500 Momentum ETF has surged by 29% year-to-date, significantly outstripping the benchmark index’s nearly 8% increase. However, a recent sell-off in the chip sector has raised alarms, as the momentum ETF has declined by 4.5% since earlier this week.
JPMorgan’s strategists have expressed particular concern about “Low Quality” and “Speculative Growth” stocks, identified as “2nd and 3rd order AI plays.” They noted that there’s been extreme crowding in these categories, which poses additional threats to market stability. The bank also underscored the potential for increased equity supply in the coming quarters and the likelihood of tighter monetary policy, both of which could further impact equity multiples.
Moreover, the strategy team highlighted a potential flash crash in 2024, driven largely by the heavy concentration of investments in technology stocks. Drawing on historical patterns, they recalled flash-crash risks observed in 2018, which were triggered by automated selling from passive fund managers.
Despite these warnings, JPMorgan maintains a bullish outlook on stocks, emphasizing that the S&P 500 index is expected to climb to 7,800 by the end of 2026—a 5% gain from current levels. The strategists noted that while the market is likely to experience non-linear growth with various challenges, a barbell investing strategy—favoring a mix of quality growth stocks and low-volatility counterparts—would be advantageous in the current landscape. They highlighted key characteristics of strong finances, robust returns, and organic growth among companies fitting this profile.



