The news: US ad spending surged 19.3% YoY in June, reversing several months of YoY spending deceleration, according to Guideline’s latest US Ad Market Tracker update.

Growth was driven largely by FIFA World Cup ad spending, marking a sharp turn for an ad market that, MediaPost notes, has otherwise grown in the low single digits on a monthly basis this year—increasing just 2.9% YoY in April and 0.9% in May—aside from February’s boost from the Winter Olympics.

Guideline’s chief insights and analytics officer Sean Wright noted that Guideline expects another one-off spike in July due to the World Cup.

Zooming in: 2026 ad spending is on track to peak because a few event-heavy months are offsetting what would otherwise be a broader slowdown.

• Cultural events like the Olympics and World Cup have significantly boosted ad spending across formats by creating short bursts of incremental demand. Advertisers are willing to pay a premium for live events that draw massive, engaged audiences, and live sports ads can cost roughly twice as much as general entertainment TV ads, per Skybeam, helping fuel those spending spikes.
• Advertisers who can’t afford those premium placements may spend on second-screen platforms like social media to reach the majority of sports viewers who watch live while scrolling online.
• Spending could peak again closer to 2026 midterm elections, which are expected to drive political ad spending to over $11 billion, per our forecast—nearly matching the 2024 presidential cycle.