PubMatic, a leading sell-side platform (SSP), reported its fourth-quarter and full-year 2025 earnings, revealing a period of revenue decline that it characterized as a strategic inflection point for both the company and the broader digital advertising industry. The company is placing a significant bet on the transformative power of agentic artificial intelligence (AI) to drive future growth, signaling a bold pivot towards a more autonomous advertising ecosystem.
During its earnings call on Thursday, February 26th, 2026, PubMatic announced fourth-quarter 2025 revenue of $80 million, representing a 6% decrease year-over-year. For the full fiscal year 2025, revenue stood at $282.9 million, down 3% from the previous year. Despite these negative growth figures, the company framed the results as a success, having surpassed its own revenue projections. This performance appeared to resonate with investors, as PubMatic’s stock price saw a notable increase of approximately 6% in after-hours trading, suggesting confidence in the company’s forward-looking strategy.
Navigating Revenue Headwinds and Strategic Diversification
PubMatic Chief Financial Officer Steve Pantelick attributed the full-year revenue figures to a significant downturn followed by a subsequent normalization in spending from a major, unnamed incumbent demand-side platform (DSP). While speculation within the industry pointed towards The Trade Desk, Pantelick indicated that this shift had a material impact. To mitigate the influence of this key partner’s spending fluctuations, PubMatic has been actively diversifying its DSP relationships, forging new partnerships with mid-tier platforms that offer greater potential for increased ad spend and scalability.
CEO Rajeev Goel expressed optimism about the company’s future trajectory, highlighting the increasing adoption of PubMatic’s proprietary AgenticOS platform. Coupled with robust demand in the connected TV (CTV) and mobile sectors, and a resurgence in display advertising, Goel projected that PubMatic’s business is poised for double-digit growth in the latter half of 2026. This outlook underscores the company’s strategic focus on emerging and resilient advertising channels.
The Agentic AI Imperative: A Vision for Autonomous Advertising
PubMatic’s long-term vision is deeply intertwined with the advent of agentic AI. Goel forecast a significant shift in the digital advertising landscape, predicting that by 2028, an estimated 25% of all digital advertising will be "executed autonomously via agentic AI." This share is projected to expand dramatically to 50% by 2030, indicating a fundamental restructuring of how advertising campaigns are conceived, executed, and optimized.
The company is proactively positioning itself as a vanguard in this evolving AI-driven ecosystem. PubMatic’s strategic initiatives, including the launch of AgenticOS and its active participation in the development of the Ad Context Protocol, are designed to capitalize on this anticipated market transformation. The Ad Context Protocol, a collaborative effort aimed at standardizing and enhancing the understanding of contextual signals for agentic ad demand, is seen as crucial for enabling more intelligent and privacy-compliant ad targeting.
Since announcing its inaugural agent-executed CTV campaign in January 2026, in collaboration with the advertising agency Butler/Till, PubMatic has reportedly facilitated over 250 such campaigns. Goel noted that a substantial portion of these campaigns involve new advertisers entering PubMatic’s platform, demonstrating the capacity of agentic solutions to attract incremental revenue and expand the company’s client base.
Furthermore, PubMatic is generating additional revenue streams through AgenticOS. Beyond its standard SSP take rate, the company levies distinct fees for agentic campaigns. This model, akin to the additional revenue derived from its Activate direct-to-buyer connection, diversifies PubMatic’s income sources and enhances its overall profitability without solely relying on existing margin structures.
To accelerate the adoption of this cutting-edge technology, PubMatic has launched an AI accelerator program. This initiative has garnered significant interest, with nearly 100 brands, agencies, and streaming platforms already enrolled. Goel characterized this as "the fastest early-stage adoption of any product we’ve launched," underscoring the strong market appetite for AI-powered advertising solutions.
Realigning the DSP Landscape and Growth Strategies
Beyond the strategic embrace of agentic AI, PubMatic’s earnings call illuminated its evolving relationships with DSP partners as another significant theme. The full-year 2025 revenue was demonstrably impacted by The Trade Desk’s decision in August 2025 to reclassify all SSPs as resellers. This classification prompted The Trade Desk to increasingly favor its OpenPath direct-to-publisher connections, which effectively bypass SSPs in the supply chain, thereby reducing PubMatic’s intermediary role and associated revenue.
Both Goel and Pantelick alluded to the impact of an unnamed DSP partner whose reduced spending in the third quarter of 2025 had previously dampened PubMatic’s revenue. However, spend from this platform reportedly stabilized around August and September. Pantelick provided a critical data point: excluding the impact of this specific DSP and the significant influx of political ad spend in 2024, PubMatic’s revenue would have shown a healthy increase of 18% year-over-year in Q4 2025 and 9% for the full year.
PubMatic’s Five-Point Growth Plan:
- Diversified DSP Partnerships: This is identified as the primary growth driver. PubMatic is actively cultivating relationships with mid-tier and specialized DSPs, aiming to broaden its partner ecosystem and reduce reliance on a few dominant players. The company has recently onboarded 50 new DSP partners and has strategically reoriented its relationships with its largest DSPs towards fast-growing commerce and high-value verticals such as pharmaceuticals. This strategic shift reflects a move towards more specialized and potentially higher-yield advertising segments.
- Activate Direct-to-Buyer: PubMatic’s direct-to-buyer offering, Activate, experienced a threefold increase in Q4 2025. This business line is a cornerstone of PubMatic’s supply-path optimization (SPO) strategy, which accounted for 55% of all activity on the platform in 2025. SPO aims to streamline the ad supply chain, offering greater efficiency and transparency for buyers.
- Growth in CTV, Mobile, and Emerging Streams:
- CTV Revenue: Excluding the impact of 2024 political advertising, PubMatic’s CTV revenue surged by 50% year-over-year in Q4 2025. This indicates strong advertiser demand for connected TV advertising, a channel offering the reach of linear TV with the targeting capabilities of digital.
- Mobile App Growth: Revenue from mobile app advertising saw a robust 25% increase in the fourth quarter. This sustained growth highlights the continued importance of mobile as a primary advertising medium.
- Emerging Revenues: This category, encompassing Activate, commerce media, and new AI solutions, demonstrated exceptional growth, increasing by 75% in Q4 and now constituting nearly 10% of PubMatic’s total revenue. This diversification into new, high-growth areas is crucial for long-term resilience.
- Emerging AI Solutions: PubMatic is actively developing and deploying AI-powered products for publishers, including AgenticOS and other publisher-facing tools. Currently, 10% of PubMatic’s publishers are generating revenue from these AI solutions, a figure Goel aims to see reach 100% in the future, signifying the pervasive integration of AI into publisher monetization strategies.
- Internal AI Optimizations: The company is leveraging AI to enhance its internal operations. Notably, 40% of the new code written by PubMatic in the latter half of 2025 was AI-generated. This internal adoption of AI is expected to drive greater efficiency, faster development cycles, and potentially innovation across the platform.
Broader Industry Implications and Future Outlook
The events and strategic shifts highlighted by PubMatic’s earnings report offer a glimpse into the broader transformations underway in the digital advertising industry. The increasing assertiveness of major DSPs in controlling their supply paths, exemplified by The Trade Desk’s actions, is forcing SSPs to adapt and demonstrate their value beyond mere intermediation. PubMatic’s response—diversification, direct-to-buyer initiatives, and a strong focus on emerging technologies like AI—suggests a strategic pivot towards becoming a more integrated and indispensable partner in the advertising ecosystem.
The rise of Amazon DSP as a top-five buyer on PubMatic’s platform is also noteworthy, potentially indicating a competitive dynamic emerging between Amazon and The Trade Desk for programmatic ad spend. The significant growth in ad spend from mid-market DSPs, which increased by 30% year-over-year in Q4, further suggests a healthy and expanding segment of the market that PubMatic is actively targeting.
PubMatic’s ambitious commitment to agentic AI signals a belief that the industry is moving towards a future where automated agents will play a central role in ad buying and selling. This vision, while ambitious, is supported by early adoption metrics and the company’s strategic investments. The success of this strategy will depend on PubMatic’s ability to effectively integrate AI into its core offerings, foster widespread adoption among publishers and advertisers, and navigate the evolving competitive landscape of ad tech. The company’s emphasis on new revenue streams beyond traditional take rates also indicates a forward-thinking approach to business model innovation in a rapidly changing digital advertising world. The journey ahead for PubMatic, and indeed for the entire industry, is one of profound technological evolution and strategic recalibration.
