Sensor Tower: Reels accounted for 50%+ of all Instagram ads in 2025, up from 35% in 2024; Reels accounted for 46% of time spent on Instagram in the US in 2025
Context & Ripple Effects
Reels ads launched globally in 2021, establishing a dedicated vertical-video inventory format rather than merely another Instagram placement. By 2022, Meta said Reels already represented more than a fifth of Instagram time, a base that makes the current ad mix a meaningful monetization milestone rather than a one-off format test.
The result also extends the reported arc of Reels’ business scale: earlier coverage described a $50B+ annual run rate and substantial daily use, while Meta had attributed Instagram engagement gains to AI recommendations. The new data indicate that attention and ad delivery have become more tightly concentrated in the same surface.
First-order effects
- Reels becomes Instagram’s dominant ad-delivery surface, giving advertisers a clearer reason to prioritize vertical, short-form creative and giving Meta more of its Instagram inventory through that format.
- With Reels representing 46% of US Instagram time, its ad prominence is broadly aligned with where users spend time, rather than being confined to a smaller experimental placement.
Second-order effects
- Marketers and agencies are likely to shift creative production and measurement toward Reels, while feed and Stories placements must compete for budgets that once treated them as Instagram’s default inventory.
- The concentration raises the value of recommendation-driven distribution: creators and brands that can produce Reels-native content gain a more direct route to both reach and paid amplification.
Third-order effects
- If this mix persists, Instagram’s advertising model will increasingly be organized around algorithmically recommended video rather than social-graph feed placements, making recommendation quality central to both engagement and monetization.
- The pattern is part of a broader shift toward higher short-form video monetization at scale, where platforms seek to turn time spent into denser commercial inventory without eroding the user experience.
The trend: Short-form, recommendation-led video is becoming the core surface through which major social platforms concentrate both attention and advertising demand.