"We struggle to believe that the US at currently [circa] 60% of global market cap can continue its inexorable rise."
The Shiller P/E ratio is a measure of how undervalued or overvalued the broader stock market is.
Garthwaite attributed the overvalued nature of the market to the meteoric rise of technology stocks this year, especially the so-called Magnificent Seven, which includes Alphabet , Amazon , Apple , Meta , Microsoft , Nvidia and Tesla .
This means the U.S. market is essentially overexposed to these seven stocks, which are seeing "extreme levels" for relative valuations, he said, in a note to clients that advised investors to underweight U.S. stocks.
While Credit Suisse is still bullish on technology stocks, current high price-to-earnings multiples for the Magnificent Seven will be difficult to maintain, he said.
Persons:
Andrew Garthwaite, Garthwaite, — CNBC's Michael Bloom
Organizations:
Apple, Meta, Microsoft, Nvidia, Tesla, Credit Suisse, Tech
Locations:
U.S