(Bloomberg) -- Nvidia Corp. made some astute stock buybacks last year ahead of a monster rally fueled by the artificial intelligence frenzy. Now the chipmaker is drawing attention because it stopped buying.Most Read from BloombergElizabeth Holmes Objects to $250-a-Month Victim Payments After PrisonInstant Pot and Pyrex Maker Instant Brands Files BankruptcyUS Inflation Slows, Giving Room for Fed to Pause Rate HikesPutin’s Economic Forum Puts Russia’s Isolation on DisplayTrump Urges Prosecutors to