Investors may want to savor the current momentum of the stock market while it lasts, as some experts warn that the artificial intelligence boom is entering a dangerous late stage. James Reilly, a senior markets economist at Capital Economics, suggests that while the S&P 500 could still climb toward 8,250 by the end of this year, a sharp correction is looming. He predicts a potential 21 percent plunge to 6,500 by the conclusion of 2027, arguing that today’s market conditions mirror those seen right before previous historic crashes.
Reilly points to several red flags that suggest the rally is built on shaky ground. Among these are price-to-earnings ratios and valuations relative to Treasury bonds that are nearing levels last seen during the dotcom bubble. There is also growing concern over whether AI investments can remain sustainable given the massive capital expenditures required. Some projections indicate that free cash flow for top AI hyperscalers could actually turn negative by 2027, suggesting that the immense spending currently driving prices upward might eventually become an anchor dragging them down.
Adding to these concerns is a worrying trend in government debt and interest rates. Ruchir Sharma, chairman of Rockefeller International, believes that if the 10 year Treasury yield decisively breaks above five percent, it could act as a catalyst for the bubble to burst. Such a move would make funding massive AI projects significantly more expensive and tighten overall monetary conditions. With US national debt already exceeding 100 percent of GDP, rising borrowing costs could squeeze companies and investors faster than they did in previous cycles.
Even long time optimists are starting to hedge their bets as volatility creeps into the oil and bond markets. Veteran strategist Ed Yardeni recently dialed back his confidence in a Roaring 2020s scenario, increasing the probability of a bearish outcome for the remainder of the decade. Between an extreme concentration of wealth in just a few mega cap stocks and a surging pipeline of new IPOs typically associated with market peaks, many analysts believe we are seeing the final fireworks before a significant downturn begins.