Bristol Myers Squibb and Merck look expensive given the market's optimism about their patent cliffs. Bristol Myers trades at 13x and Merck at 16x 2028 EV/FCF, versus Regeneron at 9.5x, which is ridiculous. As @PCM_bio notes, Opdivo loses exclusivity in 587 days and Bristol has done little to address that or its other patent expirations. x.com x.comÂ