PubMatic, a leading sell-side platform (SSP), is rapidly redefining the advertising technology landscape with the significant expansion of its agentic advertising capabilities, signaling a decisive shift away from traditional direct ad buys towards fully autonomous campaigns. The company revealed during its first-quarter earnings call on Thursday that its AgenticOS platform has successfully executed over 30 fully autonomous, end-to-end agentic campaigns, a testament to the technology’s growing maturity and market acceptance. This milestone follows the successful integration of more than 1,000 direct publisher deals that have already leveraged AgenticOS as of the first quarter of 2026.
The burgeoning success of these AI-driven initiatives has profoundly impacted PubMatic’s financial performance. The company reported an impressive 80% year-over-year growth rate within its emerging revenue category, primarily fueled by the scaling of AI deals. This segment now constitutes a substantial 14% of PubMatic’s total revenue. Overall, this growth contributed to a robust 13% year-over-year increase in the company’s total revenue for Q1, reaching $62.6 million. PubMatic also observed encouraging double-digit year-over-year growth in monetized impressions, with Connected TV (CTV) as a standalone category experiencing an 18% uplift and mobile app revenue surging by 25%.
The Agentic Advantage: Efficiency and Cost Savings
PubMatic CEO Rajeev Goel articulated during the earnings call that AgenticOS is not merely a driver of top-line growth but also a significant enhancer of campaign efficiency for advertisers. Buyers utilizing the platform are reportedly experiencing an improvement in Cost Per Mille (CPM) rates ranging from 30% to 40%. Furthermore, the platform enables buyers to access approximately 40% more publisher inventory, a benefit attributed to the elimination of fees typically levied by other ad tech intermediaries in end-to-end agentic deals facilitated by PubMatic.
"It’s a single layer of technology, and it looks a lot like what the walled gardens leverage to drive ad performance," Goel stated, drawing a parallel between PubMatic’s approach and the proprietary systems used by major tech platforms. This streamlined approach aims to democratize access to sophisticated advertising optimization previously exclusive to larger players.
PubMatic’s strategic initiatives to consolidate the ad tech supply chain are also yielding positive results. The company’s Activate direct-to-buyer connection has witnessed a threefold increase in business since the first quarter of the previous year. Concurrently, its Connect data platform has expanded its network to include over 300 data and commerce media partners, notably including industry giants like Walmart Connect and PayPal Ads, underscoring PubMatic’s growing influence in the data-driven advertising ecosystem.
Mobile and CTV: Pillars of Growth
The mobile app business, a consistent performer for PubMatic, demonstrated a 25% year-over-year growth and played a pivotal role in the SSP’s 5% expansion in display advertising revenue. Combined revenue from mobile and omnichannel video now accounts for a significant 79% of PubMatic’s Q1 revenue, highlighting the critical importance of these channels. PubMatic’s integration with the three leading mobile mediation platforms – AppLovin Max, Google AdMob, and Unity LevelPlay – provides it with access to over 90% of global mobile SDK inventory, a formidable position in the mobile advertising market.
Further bolstering its mobile advertising capabilities, Goel highlighted the AgenticOS Creative Innovation Suite. This AI-powered tool is designed to generate consistent creative assets across CTV, mobile, and online display touchpoints, ensuring a cohesive brand experience for consumers regardless of the device. Agencies such as Horizon Media, Crossmedia, and Kelly Scott Madison have already adopted this innovative suite, reflecting its early traction among forward-thinking advertising partners.
Investor Sentiment and Strategic Outlook
Despite the promising advancements, some investors have expressed cautious optimism regarding the sustained revenue growth potential of PubMatic’s agentic AI business. A notable concern raised was that the volume of agentic deals, while substantial in absolute numbers, still represents an "immaterial percentage" of PubMatic’s overall business. In response, PubMatic CFO Steve Pantelick emphasized that AI’s influence extends beyond direct agentic campaigns, impacting other areas of the business. He pointed to AI’s role in accelerating publisher campaign setup and troubleshooting, predicting that these efficiencies will contribute to continued double-digit growth alongside the robust performance of mobile and CTV.
The company reiterated its Q4 projection of achieving a double-digit growth rate in the latter half of 2026, signaling confidence in its strategic direction and the anticipated impact of its AI initiatives.
Navigating DSP Competition and Global Expansion
While PubMatic is aggressively pursuing AI-driven growth, it continues to contend with the perennial challenge of competition between Demand-Side Platforms (DSPs) and SSPs for direct advertiser business. The company acknowledged ongoing headwinds stemming from a major, unnamed DSP – widely understood to be The Trade Desk – that has reduced its spending on PubMatic’s SSP. This shift is likely a consequence of increased adoption of The Trade Desk’s OpenPath solution, which offers a direct-to-publisher channel, bypassing SSPs. This dynamic contributed to a 12% year-over-year decline in PubMatic’s US revenue during Q1. However, this domestic contraction was effectively offset by significant growth in other regions, with the Asia-Pacific market expanding by 25% and the Europe, Middle East, and Africa (EMEA) region growing by 10%.
PubMatic anticipates that the unnamed DSP’s reduced activity will continue to be a drag on Q2 earnings, with revenue projected to decrease by 2% to 4% in the upcoming quarter. Addressing investor queries, Pantelick clarified that revenue from the DSP in question actually exceeded expectations in Q1 due to PubMatic’s efforts to "optimize our platform to meet the needs of this buyer." The company expects to fully absorb the impact of this DSP’s pullback by the third quarter.
To mitigate the impact of this specific DSP’s reduced engagement, PubMatic has proactively expanded its partner ecosystem. Over 50 additional DSPs were added to its partner roster in the past year, and integrations with mid-market DSPs saw a 20% increase in Q1. Further strengthening its strategic partnerships, PubMatic secured a deal with Amazon DSP this quarter. This collaboration involves integrating Amazon’s Dynamic Traffic Engine, which has reportedly boosted publisher CPMs by up to 10% since its implementation.
Leadership Transitions and Future Frontiers
Looking ahead, PubMatic is focused on key leadership transitions. The company announced the departure of Kyle Dozeman, CRO of the Americas, and Paulina Klimenko, Chief Growth Officer. PubMatic is exploring opportunities to consolidate responsibilities into a new global Chief Revenue Officer (CRO) position.
Goel highlighted that PubMatic perceives significant growth opportunities in serving mid-market, performance-focused DSPs and midsize independent agencies. These entities have demonstrated a more rapid adoption of AI solutions compared to their larger, more traditional counterparts.
In a forward-looking statement, PubMatic expressed keen interest in collaborating with OpenAI as ChatGPT expands its advertising capabilities. PubMatic has already been engaging with smaller AI players like Kontext and Dappier, and is "already innovating on the ad formats and appropriate signals to monetize that kind of inventory." Goel pointed to OpenAI’s ambitious goal of generating $100 billion in ad revenue by 2030 as a clear indicator of its reliance on established platforms like PubMatic to achieve such a scale. "It’s going to be an ecosystem-wide effort for them to get to that level," he concluded, emphasizing the collaborative nature of future advertising endeavors in the age of advanced AI. This strategic foresight positions PubMatic to capitalize on the evolving demands of the digital advertising ecosystem, particularly in emerging AI-driven markets.
