Will Snap report positive YoY eCPM growth in any quarter of H1 2026?

eCPMs declined 8% YoY in Q4 despite 14% impression volume growth. This reflects structural competitive displacement by Meta's Advantage+ and Google's Performance Max, which have larger data sets and more optimization history. The AI ad tool improvements (DPA CPA -55%, in-app optimization +89%) are catching-up investments, not leapfrog advantages. Reversing an 8% decline to positive growth in 1-2 quarters requires either a macro-driven ad market boom or a step-change in Snap's ad product quality.

Several factors could support positive eCPM growth: the DAU decline means fewer impressions to fill, potentially increasing scarcity and pricing. Active advertisers grew 28% YoY, creating more demand-side competition. The new NA LCS leadership appointed to address large advertiser weakness could yield results. However, the composition shift toward lower-value SMB advertisers structurally depresses average eCPMs. The question asks for ANY quarter in H1, giving two chances.

The committee converged that AI ad investments are necessary for survival but insufficient for competitive differentiation. Large advertisers in North America are reducing spend — this is a demand-side problem, not just a targeting-efficiency problem. The eCPM decline has persisted through multiple quarters. Without a fundamental shift in advertiser perception of Snap's audience value or targeting capabilities, positive eCPM growth is unlikely in just 1-2 quarters. Camera-native formats may provide eventual differentiation but haven't yet moved the needle.

The 8% eCPM decline is well-established. Two positive factors exist: (1) base effect — the YoY comparison in H1 2026 is against H1 2025, which may have had weaker eCPMs than Q4 2025's comp. If H1 2025 was especially weak, the comparison becomes easier. (2) Supply reduction from DAU decline means fewer impressions, which can mechanically lift eCPMs if advertiser demand holds. But the fundamental competitive dynamic hasn't changed.

eCPM trajectories in digital advertising are notoriously sticky. Once advertisers establish that alternative platforms offer better ROI, the pricing discount becomes structural. Meta's Advantage+ and Google's Performance Max have years of optimization data advantages. The SMB-driven growth at lower eCPMs compounds the problem — the mix shift itself depresses average eCPM even if underlying pricing holds. Turning this around in 6 months would be exceptional.

I'm slightly more optimistic because the question asks for ANY quarter showing positive growth, not sustained growth. A favorable macro environment, seasonal advertising surge, or successful product launch (Sponsored Snaps, AR commerce) could produce one positive quarter even against a declining trend. The 89% growth in in-app optimization revenue shows advertisers are finding some formats valuable. One outlier quarter is more plausible than sustained reversal.

8% YoY decline is a strong negative trend. Meta and Google dominate premium ad dollars. AI improvements are catch-up. Two quarters is insufficient to reverse structural competitive displacement. Low probability of positive eCPM growth.

The combination of large advertiser attrition and SMB mix shift creates a structural eCPM headwind. Even with 28% more advertisers, they are lower-value advertisers paying lower eCPMs. The committee's consensus that AI is necessary but insufficient aligns with continued eCPM decline.

DAU decline reducing impression supply could partially offset demand weakness. New NA LCS leadership could begin to stem large advertiser losses. But structural dynamics favor continued decline. Supply reduction is the most plausible path to positive eCPM growth, but unlikely in just 1-2 quarters of trajectory.