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PubMatic, a leading sell-side platform (SSP), is positioning itself at the forefront of a significant industry shift, staking its future growth on the transformative power of agentic artificial intelligence. The company announced its fourth-quarter and full-year 2025 financial results on Thursday, February 26th, 2026, revealing revenues of $80 million for the quarter, a 6% decrease year-over-year, and $282.9 million for the full year, down 3% year-over-year. Despite these headline figures reflecting a challenging period, PubMatic executives framed the results as indicative of exceeding internal projections and expressed optimism about the company’s strategic direction, a sentiment seemingly echoed by investors as PubMatic’s stock price saw a notable uptick of approximately 6% in after-hours trading.
The company’s financial performance in the past year has been influenced by a confluence of factors, including a substantial downturn followed by a subsequent stabilization in spend from a significant, unnamed incumbent demand-side platform (DSP). According to PubMatic Chief Financial Officer Steve Pantelick, this fluctuation stemmed from a strategic recalibration by this major partner. To mitigate the impact of such concentrated dependencies, PubMatic has actively pursued a strategy of diversifying its DSP relationships, onboarding new mid-tier partners that offer greater potential for expanded investment.
Agentic AI: The Cornerstone of PubMatic’s Future Strategy
The overarching narrative from PubMatic’s earnings call centered on the company’s aggressive embrace of agentic AI as the primary driver for future growth. CEO Rajeev Goel articulated a bold vision, predicting that by 2028, a quarter of all digital advertising will be "executed autonomously via agentic AI," with this figure projected to escalate to 50% by 2030. This projection underscores PubMatic’s belief that the advertising ecosystem is at a critical inflection point, poised for a radical transformation powered by intelligent, autonomous agents.
PubMatic’s strategic investments in this domain are already yielding tangible results. The company’s proprietary AgenticOS platform, designed to facilitate agentic AI execution, has seen encouraging adoption. Furthermore, PubMatic’s active participation in the development of industry standards, such as the Ad Context Protocol – an initiative aimed at enhancing the contextual understanding of agentic ad demand – signals a commitment to shaping the future of this technology.
Since launching its first agent-executed Connected TV (CTV) campaign in collaboration with the agency Butler/Till in January, PubMatic has successfully executed over 250 such campaigns. Goel highlighted that a significant portion of these campaigns involve new advertisers to the PubMatic platform, suggesting that agentic AI solutions are not only driving efficiency but also attracting incremental revenue and expanding the company’s customer base. Beyond its standard revenue streams, PubMatic also generates additional fees for AgenticOS campaigns, similar to its Activate direct-to-buyer offering, creating new avenues for revenue growth outside of its traditional SSP margins.
To accelerate adoption, PubMatic has launched an AI accelerator program, which has already garnered commitments from nearly 100 brands, agencies, and streaming platforms. Goel described this as "the fastest early-stage adoption of any product we’ve launched," underscoring the market’s readiness for AI-driven solutions.
Navigating a Dynamic DSP Ecosystem
Beyond the excitement surrounding agentic AI, PubMatic’s earnings call also provided significant insights into the company’s evolving relationships with its DSP partners. The full-year 2025 financial results were notably impacted by The Trade Desk’s decision in August 2025 to reclassify all SSPs as resellers. This reclassification prompted The Trade Desk to redirect a portion of its spend towards its OpenPath direct-to-publisher connections, effectively bypassing SSPs in the supply chain.
Both Goel and Pantelick alluded to the impact of an unnamed, large incumbent DSP partner that caused a dip in PubMatic’s Q3 revenue before stabilizing around August and September. Pantelick further elaborated that, when the influence of this specific DSP and the extraordinary impact of 2024 political advertising spend are excluded, PubMatic’s revenue would have demonstrated robust year-over-year growth: an 18% increase in Q4 and a 9% increase for the full year 2025.
In response to these dynamics, PubMatic has made the diversification of its DSP partner mix a top priority within its five-point growth strategy. The company has actively courted mid-tier and specialist platforms, adding approximately 50 new DSP partners. This strategic shift has also involved reshaping the composition of its largest DSP relationships, focusing on fast-growing commerce and high-value advertising verticals, such as pharmaceuticals.
Indicative of the intensifying competition between major players like Amazon and The Trade Desk, Goel revealed that Amazon DSP has now ascended to become a top-five buyer on PubMatic’s platform. Concurrently, ad spend from mid-market DSPs experienced a substantial 30% year-over-year increase in Q4. Pantelick characterized the mid-market advertisers represented by these DSPs as the "fastest-growing segment of the market" over the past year, highlighting the strategic importance of this segment for PubMatic’s future expansion.
PubMatic’s Five-Point Growth Plan: A Holistic Approach
PubMatic’s strategic vision is underpinned by a comprehensive five-point growth plan, designed to capitalize on emerging opportunities and navigate industry challenges:
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Diversified DSP Partnerships: As detailed above, actively cultivating a broader and more robust network of DSP partners, with a particular emphasis on mid-tier and specialist platforms, is paramount. This strategy aims to reduce reliance on any single large partner and tap into the growth potential of diverse market segments.
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Activate Direct-to-Buyer Business: PubMatic’s Activate offering, which facilitates direct connections between buyers and publishers, has shown remarkable traction, tripling in Q4. This business unit represents a significant component of PubMatic’s supply-path optimization (SPO) efforts, which collectively accounted for 55% of total activity on the platform in 2025. The continued expansion of Activate is crucial for enhancing transparency and efficiency within the ad supply chain.
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Growth in CTV, Mobile, and Emerging Revenue Streams: The company is experiencing strong momentum in key growth areas. Excluding the influence of 2024 political ad spend, PubMatic’s CTV revenue surged by 50% year-over-year in Q4. Mobile app growth remained robust, with a 25% increase for the quarter. Emerging revenue streams, encompassing Activate, commerce media, and new AI solutions, demonstrated exceptional growth of 75% in Q4 and now constitute nearly 10% of PubMatic’s total revenue. Even PubMatic’s legacy display advertising business showed resilience, growing by 20% in Q4.
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Emerging AI Solutions for Publishers: PubMatic is actively developing and deploying AI-powered solutions for its publisher clients. This includes the expansion of its AgenticOS capabilities and other publisher-facing AI products. Currently, 10% of PubMatic’s publishers are generating revenue from these AI solutions, a figure Goel aims to see reach 100% over time, indicating significant future potential.
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Internal AI Optimizations: Internally, PubMatic is leveraging AI to enhance its own operational efficiencies. The company reported that 40% of its new code written in the latter half of 2025 was AI-generated, showcasing a commitment to integrating AI into its development processes. This internal optimization is expected to drive further innovation and efficiency across the platform.
Broader Implications and Industry Context
PubMatic’s strategic pivot towards agentic AI occurs at a time of significant flux within the digital advertising industry. The ongoing evolution of privacy regulations, the deprecation of third-party cookies, and the increasing demand for greater transparency and efficiency are collectively reshaping the advertising technology landscape.
The company’s emphasis on agentic AI can be viewed as a proactive response to these challenges. By automating complex advertising processes, agentic AI has the potential to reduce costs, improve targeting accuracy, and enhance campaign performance, all while adhering to evolving privacy standards. The Ad Context Protocol, in which PubMatic is involved, is particularly noteworthy as it seeks to enable more intelligent and privacy-preserving ad targeting by focusing on the content and context of web pages rather than individual user data.
The challenges presented by large DSPs, such as The Trade Desk’s strategic moves, highlight the ongoing power dynamics within the ad tech ecosystem. PubMatic’s strategy of diversifying its DSP relationships and strengthening its direct-to-buyer offerings through Activate is a clear attempt to build a more resilient and diversified business model, less susceptible to the unilateral decisions of dominant players.
The growth in CTV and mobile advertising further underscores the industry’s shift towards premium, engaged environments. PubMatic’s strong performance in these areas, coupled with its investment in emerging revenue streams like commerce media and AI solutions, positions it to capture a significant share of these expanding markets.
As the digital advertising industry continues its rapid evolution, PubMatic’s commitment to agentic AI represents a bold bet on the future. The company’s ability to successfully execute its five-point growth plan, particularly in fostering widespread adoption of its AI technologies and navigating the complexities of the DSP landscape, will be critical in determining its long-term success in this new era of advertising. The early traction of AgenticOS and the AI accelerator program suggest that PubMatic is well-positioned to capitalize on the transformative potential of artificial intelligence, aiming to not only adapt to but also to lead the industry’s inflection point.
