Apollo Global Management is among several firms to have expressed interest in buying Arconic, the aeronautics parts-maker that was known as Alcoa before a 2016 breakup.
Why it's a big deal: Because Arconic was the subject of a very contentious proxy battle last year with Elliott Management, which resulted in the ouster of CEO Klaus Kleinfeld and a board revamp. But the CEO swap hasn't helped Arconic's stock price, which has fallen 36% so far this year — partially due to a tariff-fueled rise in aluminum prices.