Sources: GroupM clients cut Twitter ad spend by 40%-50% since Elon Musk took over; Standard Media Index is seeing fewer January and February ad bookings in 2023
Sahil Patel / The Information : See also Mediagazer
Context & Ripple Effects
The advertiser exodus from Twitter has been building all quarter: Pathmatics found roughly 70% of Twitter's top 100 pre-takeover spenders had gone quiet by mid-December, and Similarweb logged ad-manager visits down 74%-85% year-over-year through the fall. What today's report adds is the agency-side view — GroupM's own client base cutting 40%-50% of spend — plus Standard Media Index flagging thin January and February bookings, meaning the pullback is now baked into 2023 planning rather than a temporary pause.
That matters because advertising was nearly all of Twitter's revenue before the buyout, so an agency-level cut of this size lands directly on the company's core P&L just as Q1 budgets get locked.
First-order effects
- GroupM clients are moving 40%-50% of their Twitter budgets elsewhere right now, and with ads at 89% of 2021 revenue per the related Pathmatics data, Twitter enters 2023 with its dominant revenue line contracting.
- Standard Media Index's soft January-February booking data signals media buyers are formalizing the pullback into annual plans rather than waiting out the transition.
Second-order effects
- Rival platforms and channels become the default recipients of reallocated social budgets, forcing them to absorb demand they did not plan for while Twitter competes on price to retain what's left.
- Measurement firms like Pathmatics, Similarweb, and Standard Media Index are emerging as the de facto arbiters of the platform's health — their weekly readouts now shape buyer sentiment more than Twitter's own messaging.
Third-order effects
- If the pattern holds — and the later Guideline data showing X's US ad revenue down 55%+ YoY for ten straight months suggests it did — the episode becomes a case study in how quickly an ad-dependent platform can be repriced when major agencies coordinate a pullback, pressuring owner Elon Musk to diversify toward subscriptions or other revenue lines.
- Advertiser coalitions acting on brand-safety concerns may harden into standing risk frameworks, making future platform ownership changes a budget-review trigger across the industry.
The trend: Major advertisers are treating platform ownership and governance changes as portfolio risk, withdrawing budgets from Twitter faster than the company can rebuild trust.