Meta's short-form video bet is paying off in a big way. More than half of all Instagram ads now run on Reels, up from just 35% last year, according to new data from Sensor Tower. The shift marks a seismic change in how advertisers are reaching Instagram's massive user base and underscores how completely vertical video has reshaped social media's ad landscape. With Reels on track to hit over $50 billion in annual revenue, Meta's once-risky pivot is becoming its most valuable real estate.
The numbers are stunning in their simplicity: Meta's Instagram Reels have become the platform's advertising engine in a single year. That shift from 35% to over 50% of all ads isn't just a metric update - it's a complete reversal of how the social network monetizes billions of users worldwide.
The real story here is what it reveals about where users are spending their attention. In the U.S., Reels consume 46% of time spent on Instagram, up from 37% just twelve months earlier. That's not a gradual drift. That's a wholesale migration. And advertisers are following the eyeballs, exactly as they should.
"Legacy services are seeing ad volume shift away, with advertisers prioritizing more Reels to meet users where they are," Abraham Yousef, a senior insights analyst at Sensor Tower, told CNBC. The sentiment captures the raw urgency driving this shift. Brands don't have much choice. If your customers are watching Reels, your ads go to Reels.
But here's the tension that's been quietly gnawing at Meta for years: Reels make money differently than the feed. When Mark Zuckerberg spoke about this problem back in 2023, he was blunt about the monetization math. "Currently, the monetization efficiency of Reels is much less than Feed," he said during an earnings call. "So the more that Reels grows, even though it adds engagement to the system overall, it takes some time away from Feed and we actually lose money."
That admission sent a chill through the analyst community. Meta's growth strategy was cannibalizing its most profitable product. Yet instead of pumping the brakes, Meta doubled down. The company had no choice. TikTok and YouTube weren't waiting around - they were building their own vertical video products and actually gaining ground with younger users. Instagram's existence depended on winning the short-form video race.
