Shares of Snap Inc. plunged on Friday, dragging down other ad-dependent tech firms, after the photo messaging app owner warned of a prolonged hit from Apple Inc.’s privacy changes on iOS devices.
Snap shares were down nearly 20 percent at $60.8 before the bell, on track to open at a near three-month low. Shares of Facebook, Google parent Alphabet Inc., and Twitter were down between 2 percent and 4 percent.
