Bank of America has released a warning that should be taken seriously—especially following the market crash recorded at the end of last week.

According to the report, investors should lock in some profits on stocks, as the market has accumulated too many alarming signals to continue ignoring them.

The main concern of BofA is not falling profits, but rather the absence of a recession. The issue is structural: the growth of the S&P 500 increasingly relies on a narrow group of companies. At the end of May, only 20 of 500 companies closed at historic highs. This is a catastrophically low market breadth—and this pattern was observed at the peak of the dot-com bubble in 2000. When the index rises, and the majority of stocks do not participate in this growth, it is not a bull market in the full sense, but rather a few major names pulling the entire index along.

In May, two additional risks emerged. The energy sector has significantly outperformed the rest of the market, and BofA sees parallels to February 2020, just before the COVID crash. At that time, energy also stood out from the general picture, signaling hidden stress in the economy. The second new signal identified in the report is the weakness in defensive consumer companies. The consumer staples sector has become the worst-performing sector, although historically such periods often precede a shift in favor of defensive stocks—when investors move from growth to quality.

The technology sector and communication services remain the hottest parts of the market; however, valuations there already look expensive even under optimistic profit forecasts. After Broadcom disappointed investors last week and triggered a wave of sell-offs, it became clear: the AI narrative is still working, but tolerance for any deviations from inflated expectations has sharply declined.

It is noteworthy that BofA's warning came just as the market is recovering from the crash and investors are starting to buy the dip again. This is no coincidence—the bank is essentially warning that the rebound may be a trap for those rushing back into the market. On the horizon, we are awaiting the May CPI on Wednesday, the Federal Reserve meeting on June 16-17, and ongoing geopolitical uncertainty surrounding Iran. The combination of high inflation, a possible rate hike, and a narrow market does not provide a comfortable backdrop for buying around historical highs.