Intel dropped from the 70s to the 30s in the fall of 2000
as the $COMP dropped from about 4200 to a bit below 3000.
In a crash, whether slow or fast, just about everything
gets taken down.
INTC is in all three major indexes and the S&P 500 index
funds have a lot of money tied up in the companies that
make up the index. There's also the mutual fund approach
of selling your strong stocks in a crash as that keeps
the weaker ones from cratering on a larger percentage
basis. And of course there are margin calls for those
silly enough to place leveraged bets.
There were companies that bucked the trend of the crash
like Panera Bread, Pan American Silver Mines and other
companies that were into serious growth rates.