The recent performance of the S&P 500, which closed at a record high, is notable for its concentration in a few stocks, particularly those related to artificial intelligence. On the last trading day of May, only 20 stocks within the index reached new highs, with just seven not linked to AI.
This pattern mirrors the behavior seen at the peak of the dotcom bubble in March 2000, as highlighted by Michael Hartnett from Bank of America. He suggests that while speculative price movements may continue, the current market dynamics indicate a nearing end to this phase, particularly influenced by central banks and rising interest rates.
The surge in stock prices has been largely driven by semiconductor companies, with significant gains reported by Micron Technology (up 85%), Advanced Micro Devices (up 50%), Samsung (up 43%), and SK Hynix (up 81%).
Despite the impressive performance of the tech-heavy Nasdaq Composite, which saw its best two-month stretch in over 20 years, there are growing concerns among strategists about the narrowness of this bull market. Indicators such as advance-decline lines and the percentage of S&P 500 stocks above their 200-day moving average suggest underlying market weakness.
BCA Research noted that only about 55% of S&P 500 constituents were above their 200-day moving average as of May 20. Hartnett advises investors to consider a defensive strategy, recommending a shift towards long bonds and sectors that have underperformed during the recent market surge