PubMatic, a leading sell-side platform (SSP), announced its fourth-quarter and full-year 2025 earnings on Thursday, February 26th, 2026, revealing a strategic pivot towards agentic artificial intelligence as the digital advertising industry navigates a critical juncture. While the company reported a year-over-year revenue decrease, executives highlighted the results as exceeding projections and expressed optimism about future growth driven by its AI initiatives and a diversified partner ecosystem. The announcement comes at a time of significant flux within ad tech, marked by evolving platform dynamics and the increasing integration of AI.
Financial Performance and Market Reception
PubMatic reported $80 million in revenue for the fourth quarter of 2025, a 6% decline compared to the same period in the previous year. For the full fiscal year 2025, the company’s revenue stood at $282.9 million, down 3% year-over-year. Despite the negative growth, PubMatic framed these figures as a success, having surpassed its own revenue forecasts. This sentiment appeared to resonate with investors, as the company’s stock price saw a notable increase of approximately 6% in after-hours trading following the earnings call.
Steve Pantelick, PubMatic’s Chief Financial Officer, attributed the full-year revenue dip to a period of reduced spend from a significant, though unnamed, incumbent Demand-Side Platform (DSP). This downturn was followed by a subsequent normalization of spending. To mitigate the impact of this singular partner’s fluctuations, PubMatic has proactively worked to diversify its DSP relationships, onboarding new midtier partners that exhibit strong growth potential.
Rajeev Goel, PubMatic’s Chief Executive Officer, elaborated on the company’s forward-looking strategy, emphasizing that the successful adoption of its proprietary AgenticOS platform, coupled with robust demand in Connected TV (CTV) and mobile advertising, and a resurgence in display advertising, are poised to drive double-digit revenue growth in the latter half of 2026.
The "Agentic" Future: PubMatic’s AI Bet
PubMatic is making a significant strategic commitment to agentic AI, a nascent but rapidly evolving field within artificial intelligence that focuses on autonomous agents capable of performing tasks and making decisions. Goel projected that by 2028, agentic AI will be responsible for executing 25% of all digital advertising transactions, a figure expected to climb to 50% by 2030. This bold prediction underscores the company’s belief that the industry is on the cusp of a transformative shift.
To position itself as a leader in this emerging landscape, PubMatic has launched AgenticOS, its AI-powered operating system, and actively participates in the development of industry standards like the Ad Context Protocol. This protocol aims to enhance the comprehension and utilization of agentic ad demand within the ecosystem.
Since initiating its first agent-executed CTV campaign in collaboration with the ad agency Butler/Till in January 2026, PubMatic has successfully executed over 250 agentic ad campaigns. Goel highlighted that a substantial number of these campaigns involve new advertisers on the PubMatic platform, demonstrating the capacity of agentic solutions to generate incremental revenue.
Furthermore, PubMatic benefits from an additional revenue stream through AgenticOS campaigns, which incur fees beyond its standard Supply-Side Platform (SSP) take rate. This model is akin to the additional fees generated by PubMatic’s Activate direct-to-buyer connection, positioning AgenticOS as a significant new avenue for revenue generation independent of its existing margin structure.
To accelerate the adoption of this transformative technology, PubMatic also introduced an AI accelerator program. This initiative has garnered significant interest, with nearly 100 brands, agencies, and streaming platforms already signing up. Goel described this as "the fastest early-stage adoption of any product we’ve launched," signaling strong market receptiveness to its AI offerings.
Navigating the DSP Landscape: Diversification and Strategic Realignment
Beyond its aggressive push into agentic AI, PubMatic’s earnings call also illuminated its evolving relationships with its DSP partners, a critical component of the ad tech supply chain. The company’s full-year 2025 financial performance was notably impacted by The Trade Desk’s decision in August 2025 to reclassify all SSPs as resellers. This reclassification prompted The Trade Desk to channel a greater portion of its ad spend through its OpenPath offering, which facilitates direct connections to publishers and bypasses traditional SSP intermediaries.
Both Goel and Pantelick alluded to the impact of an unnamed major DSP partner on PubMatic’s third-quarter revenue in 2025, noting a period of decreased spending that stabilized around August and September. Pantelick provided further clarity, stating that if the impact of this specific DSP and the 2024 political ad spend were excluded, PubMatic’s revenue would have shown a robust 18% year-over-year increase in Q4 2025 and a 9% increase for the full year 2025.
A core tenet of PubMatic’s five-point growth strategy is the diversification of its DSP partner mix. The company is actively pursuing relationships with midtier and specialist platforms. PubMatic has recently integrated 50 new DSP partners and has strategically "reshaped the mix of our largest DSPs towards fast-growing commerce and high-value ad verticals like Pharma," according to Pantelick.
In a development that may indicate the intensifying competition between major players like Amazon and The Trade Desk, Goel revealed that Amazon DSP has ascended to become one of the top five buyers on PubMatic’s platform.
Concurrently, ad spend originating from mid-market DSPs experienced a substantial 30% year-over-year increase in Q4 2025. Pantelick identified ad spend from mid-market advertisers, represented by these DSPs, as the "fastest-growing segment of the market" throughout 2025. This trend suggests a broader market shift towards more specialized and potentially more agile advertising solutions.
PubMatic’s Five-Point Growth Strategy: A Deeper Dive
PubMatic’s strategic vision for sustained growth is articulated through a comprehensive five-point plan:
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Evolving DSP Partnerships and Diversification: As detailed previously, this point emphasizes building a more resilient and growth-oriented DSP ecosystem, moving beyond over-reliance on a few large players and cultivating relationships with midtier and specialized platforms.
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Expansion of Activate Direct-to-Buyer Business: The second pillar of PubMatic’s strategy is the continued growth of its Activate offering, which facilitates direct connections between buyers and publishers. This segment experienced a remarkable tripling in Q4 2025. Supply-path optimization (SPO), a significant component of which is represented by Activate, accounted for an impressive 55% of all activity on PubMatic’s platform in 2025. This highlights the increasing importance of efficient and transparent ad supply chains.
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Growth in CTV, Mobile, and Emerging Revenue Streams: PubMatic is capitalizing on the surging demand in CTV and mobile advertising. Excluding the impact of 2024 political ad spend, PubMatic’s CTV revenue surged by 50% year-over-year in Q4 2025. Mobile app revenue demonstrated robust growth, with a 25% increase for the quarter. Emerging revenue streams, which encompass Activate, commerce media, and new AI solutions, grew by an exceptional 75% in Q4 and now constitute nearly 10% of PubMatic’s total revenue. This diversification away from traditional display advertising is a key strategic objective.
In contrast to the growth in these newer channels, PubMatic’s legacy display advertising business also showed healthy performance, increasing by 20% in Q4 2025. This indicates a balanced approach to growth across both established and emerging segments of the digital advertising market.
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Development of Emerging AI Solutions: This point directly addresses PubMatic’s commitment to developing and deploying cutting-edge AI-driven advertising products and services for its publisher clients. AgenticOS is a prime example of this, offering publishers new ways to monetize their inventory through autonomous advertising execution.
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Internal AI Optimizations: The fifth point focuses on leveraging AI to enhance PubMatic’s internal operations and development processes. The company has made significant strides in this area, with 40% of its new code written in the second half of 2025 being AI-generated. Currently, 10% of PubMatic’s publishers are generating revenue from AI-powered solutions, including AgenticOS and other publisher-facing products. Goel expressed his ambition for this figure to eventually reach 100%, acknowledging that the company is still in the early stages of its AI integration journey with substantial room for future development.
Broader Industry Implications and Outlook
PubMatic’s strategic emphasis on agentic AI and its proactive efforts to diversify its DSP relationships signal a broader trend within the digital advertising industry. The increasing complexity of the ad tech ecosystem, coupled with evolving privacy regulations and the persistent demand for greater efficiency and transparency, is forcing companies to innovate and adapt rapidly.
The company’s performance, despite a temporary dip, suggests resilience and a strategic foresight that resonates with market participants. The success of AgenticOS and the AI accelerator program indicate that the industry is receptive to advanced AI solutions that promise to streamline operations, enhance campaign effectiveness, and unlock new revenue streams.
The shift in DSP dynamics, particularly the move towards direct publisher connections and the increasing influence of platforms like Amazon DSP, underscores the ongoing realignment of power and influence within the ad tech landscape. PubMatic’s strategy to onboard midtier and specialist DSPs appears to be a prudent response to these evolving market conditions, aiming to capture growth from a more fragmented but potentially dynamic segment of the market.
As the digital advertising industry continues its evolution, PubMatic’s aggressive investment in agentic AI and its commitment to a diversified and robust partner ecosystem position it as a key player to watch. The company’s ability to successfully execute its five-point growth plan will be crucial in determining its trajectory in the increasingly AI-driven future of advertising. The coming years are likely to see a significant reshaping of how digital advertising is bought, sold, and executed, with agentic AI playing a central role in this transformation. PubMatic’s current strategic posture suggests it is well-prepared to lead this charge.
