As they say, stocks take the stairs on the way up and the elevator on the way down. Or sometimes, the cliff.Drug stocks$BHC is fundamentally the same but the stock is acting otherwise. $BHC, Bausch Health Companies Inc. / H1 $TNDM Tandem is a growth play, so the valuation correction is welcome.$BIIB Biogen has a few hedge funds buying the stock. $BIIB, Biogen Inc. / H1 In the technology space, the mild bubble is not the place to invest aggressively. $MSFT Microsoft could not hold up. $INTC Intel either. $AMD erased its 2-month gains.