Fears about end of pandemic PC boom lead to downgrades for AMD, HP and Dell, and all their stocks are falling

The COVID-19 pandemic instigated a boom in personal-computer sales, and supply-chain issues pushed prices up, but analysts see softening sales and a normalizing supply/demand environment in 2022, which slammed a few stocks Thursday.

Advanced Micro Devices Inc. AMD shares dropped as much as 8.4% in Thursday trading after Barclays analyst Blayne Curtis downgraded the stock on concerns that several end markets the chip maker serves are poised for a correction.

“Where…