Facebook-Linked Marketer Plunges After Policy Shift

The headquarters of Acxiom Corp. in Little Rock, Arkansas, May 17, 2007. 

Photographer: Rick McFarland/Bloomberg

Lock
This article is for subscribers only.

Facebook Inc.’s reckoning with its data-privacy practices has the company thinking of easy ways to make the site feel safer for users. One early casualty: Acxiom Corp. shares.

Acxiom fell as much as 34 percent Thursday, its largest drop since 2001, after Facebook said it will no longer let advertisers use information from third-party data brokers like Acxiom in targeting of ads on its system. The marketing company said the change could costBloomberg Terminal it up to $25 million in profit in fiscal 2019.