PubMatic’s core business model has undergone a significant transformation, now anchored in AI-native infrastructure and direct buying, with defensible technology and compounding data assets. The company shows strong, recurring revenue growth, expanding margins, and credible expansion into new verti…
PubMatic (PUBM) Q2 2026: Emerging Revenue Doubles as AI Platform Drives 15% of Business
PubMatic delivered a step-change in business mix, with emerging AI-driven revenues hitting an all-time high and now representing 15% of total sales. Strategic investments in agentic advertising and infrastructure are compounding, accelerating growth across CTV, mobile app, and new verticals. With a leadership transition underway and AI adoption deepening, the company signals a durable shift in digital advertising’s value chain, positioning itself for outsized share as the open internet evolves.
Summary
- AI-Native Platform Gains Traction: Agentic OS and Decision Fabric adoption is accelerating, reshaping customer engagement.
- Revenue Mix Transformation: CTV, mobile app, and emerging channels now drive the majority of growth.
- Leadership Evolution: CFO transition and CRO hire underscore a new phase of commercial execution.
Business Overview
PubMatic operates a sell-side platform (SSP), a software infrastructure that enables digital publishers to monetize their ad inventory across connected TV (CTV), mobile apps, and web. The company generates revenue by facilitating programmatic advertising transactions, earning fees from publishers and, increasingly, from direct advertisers and agencies through its AI-powered products like Agentic OS and Activate. Major segments include CTV, mobile app, display, and a fast-growing portfolio of emerging revenue streams driven by AI and direct buying solutions.
Performance Analysis
PubMatic returned to double-digit revenue growth, with a sharp pivot toward high-value channels and formats. CTV, mobile app, and emerging revenues now account for 60% of the business, reflecting a deliberate diversification away from legacy display. CTV in the Americas grew 25% year-over-year, while mobile app revenue surged over 40%, and emerging revenue nearly doubled, reaching a record 15% of total sales. This mix shift is the result of sustained platform innovation and rapid adoption of AI-driven solutions.
Margins expanded meaningfully, with adjusted EBITDA margin rising to 25%, reflecting both top-line acceleration and operational discipline. AI and automation delivered tangible productivity gains, allowing the company to reduce overall headcount even as it grew its go-to-market teams by 12%. The company’s cost structure benefited from a focus on monetized impressions, which increased sequentially, while gross impressions processed declined, signaling improved platform efficiency and higher yield per transaction. Free cash flow also saw robust growth, underlining the business’s scalability and capital discipline.
- Emerging Revenue Inflection: AI-powered products and direct buying now comprise 15% of revenue, nearly doubling year-over-year.
- Channel Diversification: Mobile app and CTV together drive nearly half of total revenue, offsetting legacy segment softness.
- Margin Expansion: Operating leverage from automation and infrastructure investments is driving higher profitability.
The breadth of growth across channels, formats, and verticals signals a structurally more resilient and scalable business model, with durable tailwinds from both technology adoption and changing industry economics.
Executive Commentary
"Over the past several years, we've made disciplined investments to diversify the business and strengthen our competitive position to deliver both faster growth and strong operating leverage. Today, approximately 60% of our business comes from CTV, mobile app, and emerging revenues, all of which fuel profitable double-digit growth."
Rajeev Goel, Co-founder & CEO
"AI adoption across our company is accelerating innovation, driving revenue growth, improving customer outcomes, and unlocking incremental cost efficiencies. In Q2, we saw the benefit of our broad, diversified omnichannel platform. Our high-value formats and channels gained momentum and scale, and we continued diversifying the business."
Steve Pantelick, Chief Financial Officer
Strategic Positioning
1. AI-Native Infrastructure and Agentic OS
PubMatic’s core advantage now lies in its proprietary AI-native infrastructure, enabling real-time optimization and automation across the ad value chain. Agentic OS, the company’s flagship AI-powered workflow engine, has seen rapid adoption, with 80 campaigns executed this quarter, up from 30 last quarter. This platform compresses traditional buying workflows, increasing the share of transaction value PubMatic can capture.
2. Direct Buying and Activate
Activate, PubMatic’s direct buying interface, allows advertisers to bypass traditional DSP intermediaries, generating incremental buying fees and deepening customer relationships. Direct buying activity more than doubled year-over-year, further diversifying the company’s demand base and increasing operational leverage.
3. Decision Fabric and Containerization
With the launch of Decision Fabric, PubMatic enables partners to deploy proprietary models directly within its infrastructure, removing latency and traffic constraints. This containerization approach gives buyers more control and performance, and positions PubMatic as a critical infrastructure layer for the open internet’s future.
4. Expansion into Creator and Live Sports Marketplaces
The company is capitalizing on the rise of creator-led video and live sports, now representing significant incremental inventory and demand. The Creator Marketplace and live sports partnerships (such as with Sony Pictures and Channel 4) expand PubMatic’s publisher base and open new verticals, reinforcing the platform’s relevance as digital consumption fragments.
5. Compounding Data and Intelligence
Every campaign and transaction further enriches PubMatic’s proprietary data signals, improving targeting and outcomes for both advertisers and publishers. This compounding data advantage, amplified by over 300 data partners, strengthens competitive moats and drives a virtuous cycle of performance and adoption.
Key Considerations
This quarter marks a pivotal moment in PubMatic’s evolution, with the business model now anchored in AI-driven, high-value channels and a more direct connection to end customers. The following themes warrant investor attention:
- AI Platform Adoption: Rapid uptake of Agentic OS and Decision Fabric is changing how advertisers and agencies engage with the open internet, with early evidence of repeat and expanding campaigns.
- Revenue Mix Shift: The pivot to CTV, mobile app, and emerging categories is accelerating, reducing reliance on legacy segments and enhancing resilience to market cyclicality.
- Operational Efficiency: Automation and AI have enabled headcount reduction while expanding commercial reach, driving margin expansion and freeing resources for growth investments.
- Leadership Transition: The announced CFO retirement and new CRO appointment signal a focus on execution, sales rigor, and deeper brand relationships as the business scales.
- Market Share Opportunity: As legacy DSP lock-in erodes, PubMatic is well-positioned to capture share from both walled gardens and legacy intermediaries.
Risks
Key risks include potential delays in broad AI adoption, competitive responses from DSPs or walled gardens, and execution risk in scaling new verticals like creator-led video and live sports. Macroeconomic volatility could impact advertiser budgets, and regulatory scrutiny around digital advertising practices remains a background risk. Leadership transition, while orderly, introduces some uncertainty as the company enters a new phase of growth.
Forward Outlook
For Q3 2026, PubMatic guided to:
- Revenue of $75 to $77 million, representing 12% growth at the midpoint
- Adjusted EBITDA of $17 to $19 million
For full-year 2026, management raised capex guidance to $20 to $25 million, citing increased AI workloads and strategic NVIDIA partnership investments. Management expects:
- Double-digit revenue growth to continue in the second half
- Full-year margin expansion, with Q4 margins similar to last year’s high
- Political advertising to provide incremental upside, especially in Q4
Takeaways
PubMatic’s AI-driven reinvention is now translating into measurable financial and strategic gains, with emerging revenue streams and high-value channels driving both top-line growth and margin expansion.
- Business Model Inflection: The shift to direct, AI-powered transactions is fundamentally changing PubMatic’s role in the digital ad ecosystem, positioning it as a critical infrastructure provider.
- Execution on Diversification: Broad-based growth across CTV, mobile app, emerging, and verticals like live sports and creator video demonstrates the platform’s adaptability and relevance.
- Future Watchpoint: Investors should track adoption rates for Agentic OS and Decision Fabric, evolution of direct advertiser relationships, and the impact of leadership transitions on commercial execution.
Conclusion
PubMatic’s second quarter marks a decisive acceleration in its transformation, with AI-native infrastructure, direct buying, and new verticals now core to its growth story. With operational leverage and a compounding data advantage, the company is positioned to capture outsized share as digital advertising undergoes its next technology transition.
Industry Read-Through
PubMatic’s results highlight a broader industry shift toward AI-driven, supply-side value creation and the erosion of legacy DSP lock-in. The rapid adoption of agentic workflows and containerized decisioning signals a new era where infrastructure providers with proprietary data and automation capabilities will capture greater share of the digital ad value chain. Players still reliant on user interface-driven lock-in or legacy mediation models may see accelerating pressure, while platforms able to compound intelligence and operate at real-time scale will increasingly define the open internet’s advertising landscape. The expansion into creator and live sports marketplaces also reflects the growing fragmentation of digital consumption and the need for flexible, scalable infrastructure to monetize emerging inventory types.