PubMatic's Q3 2025: Contradictions Emerge on Direct Monetization vs. Reselling, AI's Impact on Publisher Base, and Trade Desk's Role in Agentic AI Transition

Date of Call: November 10, 2025

Financials Results

• EPS: -$0.14 per diluted share (GAAP net loss of $6.5M)
• Operating Margin: Adjusted EBITDA margin 16% (Q3 adjusted EBITDA $11.2M)

Guidance:

• Q4 revenue expected $73M–$77M; Q4 adjusted EBITDA expected $19M–$21M; Q4 operating expenses expected similar to Q3.
• Full-year revenue expected $276M–$280M; full-year adjusted EBITDA expected $53M–$55M (includes >$5M estimated negative FX).
• Secular trends: double-digit CTV growth excluding political; emerging revenues expected 30%+ growth in Q4.
• CapEx maintained at $15M for the year; headcount roughly flat while continuing AI investments.

Business Commentary:

* Revenue Growth and CTV Expansion: - PubMatic reported strong CTV revenue growth of over 50% year-over-year in Q3, excluding political advertising. - This growth was driven by increased premium supply, scaling of agency marketplaces, traction in live sports marketplaces, and growth in small and mid-market advertisers.

• Emerging Revenues and AI Innovation:
• Emerging revenues grew over 80% year-over-year, with significant contributions from AI-driven solutions like AI-based yield optimization for publishers.

• The company's AI strategy and innovations at the infrastructure, application, and transaction layers have driven higher platform usage and new revenue streams.

• Operational Efficiency and Cost Management:

• PubMatic achieved $32.4 million in net operating cash flows and $22.8 million in free cash flow in Q3.

• This was supported by efficient working capital management, early investments in AI to drive operational efficiency, and leveraging internal resources to support growth initiatives.

• Diversification of DSP Base:

• Ad spend from mid-tier DSP partners grew over 25% year-over-year in Q3.
• Expansion into mid-market-focused DSPs and commerce DSPs, alongside strategic partnerships like Bliss and MNTN, contributed to this growth.

  Sentiment Analysis:

  Overall Tone: Positive

  • Management: "We delivered a stronger-than-expected quarter with revenue and adjusted EBITDA ahead of guidance." CTV grew "over 50% year over year (ex-political)"; Q3 adjusted EBITDA $11.2M (16% margin); generated $32.4M net operating cash flow and $22.8M free cash flow; management reiterated AI-led differentiation and multi-year infrastructure investments with NVIDIA driving faster bid responses and fewer timeouts.

Q&A:

• Question from Andrew Merrick (Raymond James): Can you expand on SPO and recent moves by The Trade Desk (OpenPath/OpenAds/reseller claims) and your DLID management API collaboration? Also a follow-up for Steve on COGS/unit cost leverage — how should we think about that line going forward?
  Response: PubMatic: we are a direct SSP (not a reseller), focused on yield optimization and direct publisher integrations; spend from the large DSP stabilized after ML and SPO adjustments. CFO: owning infrastructure plus AI-driven software will continue to drive unit-cost declines and higher gross margins as revenue reaccelerates.

• Question from Matt Condon (JMP): Can you give more color on the evolution in CTV over the past year, drivers of growth, and how you’re investing to continue that growth? And follow-up: how do you articulate PubMatic's 'right to win' on GenAI/Agentic AI?
  Response: CTV growth driven by adding premium publishers (>90% of top 30 streamers), mid-market DSP expansion, Activate adoption, and AI-driven product innovations; PubMatic's owned infrastructure, transaction scale (massive impression volume), and early execution give it a structural advantage to lead Agentic AI.

• Question from Shweta Khajuria (Wolfe): Are you seeing The Trade Desk increasingly going direct and impacting your impressions volume (e.g., via Kokai)? Any material impact to your business?
  Response: No material lasting impact—spend stabilized in August/September after PubMatic revised ML sending logic and worked with SPO partners; PubMatic is rapidly diversifying its DSP mix and seeing 25%+ growth with mid-market DSPs.

• Question from Matt Condon (JMP): Has the rise of AI search reduced publisher traffic on your platform, and what magnitude of impact are you seeing?
  Response: Limited impact; estimate worst‑case mid-single-digit percentage of revenue exposure if search traffic vanished, while ~60% of impressions are CTV/mobile (unaffected); mitigation via shifting mix to CTV/mobile/commerce and new AI-driven publisher opportunities.

• Question from Matt Condon (JMP): On your NVIDIA partnership and the 5x faster bid responses—what structural differences does that enable and how does it translate into auction win rates and sustainable growth?
  Response: NVIDIA-powered infra accelerates real-time decisioning, traffic shaping, and reporting—reducing auction timeouts, increasing bids in auctions and publisher yield, and enabling optimizations that drive better advertiser ROI and incremental revenue.

• Question from Rob Colbert (Overwolf): With the 5x faster bid response, do demand-side counterparties benefit directly or must you host more demand-side logic (vertical integration)? And Steve, do you see growth alongside The Trade Desk into 2H 2026?
  Response: PubMatic will leverage infra to vertically integrate where helpful—supporting mid-market DSPs with data/performance and scaling Activate to capture demand; CFO: confident in re-accelerating growth in 2026 across CTV, mobile and emerging revenues supported by AI and buyer diversification.

• Question from Jacob Armstrong (KeyBank): How does the SSP role need to evolve as Agentic AI expands and what investments are required for PubMatic to capitalize?
  Response: SSP must expand beyond atomic transactions into workflow automation for discovery, planning and measurement; PubMatic is building protocols (AdCP) and structured request/response standards to enable agent-to-agent workflows and capture that opportunity.

• Question from Ed Alter (Jefferies): Where are the investments to meet mid-market DSP demand showing up — headcount, tech, or both?
  Response: Investments are primarily reallocations: buyer-focused headcount increased ~19% while total headcount stayed roughly flat, supported by tech/AI optimizations; CapEx is expected to remain controlled, enabling resource shifts toward growth areas without large incremental spend.

Contradiction Point 1

Role of PubMatic in Direct Inventory Monetization vs. Reselling

It highlights a discrepancy in how PubMatic defines its role in the industry, which could affect investor perceptions and strategic partnerships.

How is SPO evolving with The Trade Desk's recent actions, and how does this affect the SSP-DSP relationship? - Andrew Merrick (Raymond James)

2025Q3: PubMatic is a platform for direct inventory monetization, not a reseller. We don't resell, but rather provide direct connections to publishers, offering significant incremental value through yield optimization. - Rajiv Goel(CEO)

How have advertiser conversations evolved with SPO accounting for 55% of platform activity, and how is this affecting your go-to-market strategy with increased direct sales focus? - Jacob Armstrong (KeyBanc Capital Markets)

2025Q2: We are a direct platform, not a reseller. Trade Desk's Kokai platform evaluates media differently. - Rajiv Goel(CEO)

Contradiction Point 2

Impact of AI Search on Publisher Base

It addresses the anticipated impact of AI search on PubMatic's publisher base, which could influence revenue projections and strategic planning.

How is search traffic affecting your publishers as AI platforms take a larger share? - Matt Condon (JMP)

2025Q3: Impact is limited to single-digit percentages, with 60% of impressions from CTV and mobile app, unaffected by search. - Rajiv Goel(CEO)

Can you elaborate on the nature of the change from the DSP, especially since other peers haven't mentioned it? - Matthew John Swanson (RBC Capital Markets)

2025Q2: Despite the macroeconomic environment and potential headwinds in digital media, we were able to grow our ad load by 27%. - Rajiv Goel(CEO)

Contradiction Point 3

Role and Impact of The Trade Desk

It involves differing interpretations of the role and impact of The Trade Desk on Pubmatic's business, which could affect strategic decisions and investor perceptions.

How do recent SPO developments and actions by companies like The Trade Desk affect the relationship between SSPs and DSPs? - Andrew Merrick (Raymond James)

2025Q3: Trade Desk relies on PubMatic for improvements in deals using our price discovery and provisioning API integration. - Rajiv Goel(CEO)

Are there risks with other DSPs regarding first/second bid issues? Also, can you discuss the investment in buy-side products? - Jason Helfstein (Oppenheimer)

2024Q4: Most DSPs have moved to a first bid system, indicating limited risk. - Steve Pantelick(CFO)

Contradiction Point 4

Role of SSPs in Agentic AI Transition

The responses from Rajiv Goel in 2025Q3 and 2025Q1 suggest a shift in the company's view of the SSP's role in the Agentic AI transition.

Okay, let's see. The user wants me to simplify the given question from a conference call. The original question is: "How will the SSP's role evolve with Agentic AI, and what investments are needed to capitalize on this transition?" First, I need to make sure I understand the question. The user is asking about two things: the evolution of the SSP's role with Agentic AI and the required investments for that transition.Now, the task is to make it concise and precise, removing any unnecessary words. The original uses "evolve with Agentic AI" which can be shortened to "evolve with Agentic AI" is already pretty direct. Then "capital on this transition" can be rephrased as "capitalize on this transition" is correct. Wait, "SSP's role evolve with Agentic AI" – maybe "evolve with" can be "evolve in the context of" but that's longer. Alternatively, "evolve with the adoption of Agentic AI" but that's more words. The original is already concise.Check for any redundant words. "How will the SSP's role evolve with Agentic AI" is clear. Then "what investments are needed to capitalize on this transition?" Maybe "transition" can be "shift" but "transition" is standard. So the simplified version would be: "How will the SSP's role evolve with Agentic AI, and what investments are needed to capitalize on this transition?" That's already pretty concise. Maybe "capital" instead of "capitalize on" but the original uses "capitalize on", which is correct. I think the original is already quite concise. Maybe check if "Agentic AI" is a term that needs to be kept as is. Since it's a specific term, it should stay. So the final simplified question is the same as the original. Wait, but the user said "because the questions are from live calls, the phrasing might be verbose". Maybe the original is not too verbose, but perhaps "evolve with Agentic AI" can be "evolve as Agentic AI is adopted"? But that adds words. Alternatively, "How will the SSP's role change with Agentic AI, and what investments are needed for this transition?" "Change" is shorter than "evolve", but "evolve" might be more precise. Hmm, the user wants to keep the original meaning. So "evolve" is better. So the original question is already concise. Therefore, the answer is the same as the input. Wait, but the user provided an example where the input was "How has your team..." and the output was "How has your team..." So maybe the original is acceptable. Therefore, the simplified question is the same as the original. But wait, let me check again. The original is: How will the SSP's role evolve with Agentic AI, and what investments are needed to capitalize on this transition?Is there any way to make it shorter? Maybe "What investments are needed to capitalize on the transition?" instead of "this transition". But "this transition" refers back to the evolution with Agentic AI. So using "the transition" is necessary for clarity. I think the original is already concise. So the answer is the same as the input. But maybe the user expects a slightly shorter version. Let me see. Maybe "evolve with Agentic AI" can be "evolve in Agentic AI", but that's less clear. No, "with" is correct. So the answer remains as the original. Therefore, the simplified question is the same as the input. Wait, but the user said "because the questions are from live calls, the phrasing might be verbose". So maybe the original is not verbose. Maybe the user wants to ensure that the question is as concise as possible. Wait, the original is "How will the SSP's role evolve with Agentic AI, and what investments are needed to capitalize on this transition?" If I can combine the two parts into a single question, but the user is asking for two separate parts. So the structure is correct. Therefore, the simplified version is the same as the original. So the output is the same as the input. But maybe the user wants to remove "with" in "with Agentic AI" and use "using Agentic AI"? No, that would change the meaning. Alternatively, "How will the SSP's role evolve with Agentic AI, and what investments are needed to capitalize on the transition?" Yes, that's the same. So the answer is the same as the original. Therefore, the output is the same as the input. But the user might have expected a shorter version. Wait, maybe "capital on this transition" can be "capitalize on the transition". The original says "capitalize on this transition". "This" refers to the transition mentioned. So "the transition" is better. So "capitalize on the transition". - Jacob Armstrong(KeyBank)

2025Q3: The SSP's role will expand to workflow automation, going beyond transactions to inventory discovery and planning, enabling Agentic AI transactions. - Rajiv Goel(CEO)

Have you had direct interaction with the DOJ about potential remedies after the Google antitrust ruling? - Eric Martinuzzi(Lake Street)

2025Q1: The SSP role is becoming less transactional and more about planning. - Rajiv Goel(CEO)

Contradiction Point 5

Impact of AI on Inventory and Consumer Behavior

It involves the expected impact of AI on inventory and consumer behavior, which could influence PubMatic's strategic focus and market positioning.

How is search traffic affecting your publisher base, especially as AI platforms gain market share? - Matt Condon (JMP)

2025Q3: Impact is limited to single-digit percentages, with 60% of impressions from CTV and mobile app, unaffected by search. - Rajiv Goel(CEO)

Can you explain the 6x growth in Activate and strategically address increasing platform demand? - Andrew Boone (JMP)

2024Q4: Activate is growing by making the supply chain more efficient, which resonates with buyers. - Rajiv Goel(CEO)