• Advertising spending on Twitter Inc. dropped by 71% in December, data from an advertising research firm showed, as top advertisers slashed their spending on the social-media platform after Elon Musk's takeover.
  • Fourteen of the top 30 advertisers on Twitter stopped all advertising on the platform after Musk took charge on October 27, according to the Pathmatics estimates.
  • Twitter's fourth-quarter revenue fell about 35% year over year due to a slump in advertising, technology-focused publication the Information reported, citing details shared by a top Twitter ad executive at a staff meeting last week.