Digital advertising technology company PubMatic (NASDAQ: PUBM) reported Q1 CY2026 results beating Wall Street’s revenue expectations, but sales fell by 2% year on year to $62.57 million. On top of that, next quarter’s revenue guidance ($69 million at the midpoint) was surprisingly good and 3.2% above what analysts were expecting. Its non-GAAP loss of $0.11 per share was 31.3% above analysts’ consensus estimates.

Is now the time to buy PUBM? Find out in our full research report (it’s free for active Edge members).

StockStory’s Take

PubMatic’s first quarter was marked by stronger than expected revenue and adjusted earnings, leading to a positive market reaction. Management attributed the outperformance to accelerated adoption of its AI-powered AgenticOS platform and continued diversification of its customer base, especially within mid-market demand-side platform (DSP) partners. CEO Rajeev Goel explained that “over 1,000 AI-powered deals have been transacted to date, resulting in millions of dollars in publisher monetization,” highlighting the growing impact of AI on operational efficiency and customer outcomes.

Looking ahead, PubMatic’s guidance is supported by anticipated momentum from high-value ad formats such as connected TV (CTV), mobile app, and its emerging revenue streams. Management expects AI-driven automation and new partnerships to reinforce revenue growth and margin expansion in the second half of the year. CFO Steve Pantelick noted, “As we lap the DSP impact in Q3 and accelerate through the second half, we are well positioned for both revenue and margin expansion,” underscoring the company’s focus on leveraging AI and infrastructure investments to drive performance.

Key Insights from Management’s Remarks

Management emphasized that the quarter’s results were driven by rapid adoption of AI solutions, growth in new ad channels, and diversification beyond legacy DSPs.

• AI adoption accelerates: PubMatic’s AgenticOS platform and AI-powered tools saw increasing customer uptake, enabling buyers and publishers to automate workflows and optimize campaign performance. Over 1,000 AI-driven deals were completed, with fully autonomous campaigns now live across several global markets.

• Mid-market DSP expansion: Activity from mid-market and performance DSPs grew over 20% year-over-year, reflecting PubMatic’s shift to serve a broader spectrum of advertisers. This diversification reduces reliance on large, established DSPs and aligns with faster-growing advertising budgets among challenger brands.

• Growth in CTV and mobile app: Revenue from connected TV and mobile app channels increased significantly, supported by new partnerships and product innovation. The integration with major mediation platforms expanded PubMatic’s access to global mobile inventory, while partnerships with premium CTV publishers boosted inventory quality and reach.

• Emerging revenue streams: Management highlighted that emerging revenues, including those from AI products and Commerce Media partnerships, grew over 80% year-over-year. New collaborations with Walmart Connect and PayPal are expected to further enhance audience targeting and campaign measurement capabilities.

• Operational efficiency gains: Investments in owned and operated infrastructure, particularly GPU-centric upgrades, allowed for faster data processing and lower costs. These efficiencies translated into improved model performance and productivity across engineering, finance, and customer success teams.

Drivers of Future Performance

PubMatic expects growth to be fueled by expanded AI adoption, channel diversification, and continued operational efficiency gains, though macroeconomic factors remain a consideration.

• AI-driven growth: Management believes AI and automation will drive new revenue streams, both by improving campaign effectiveness for advertisers and by reducing operational complexity. AgenticOS and related tools are seen as providing step-change improvements in efficiency and performance, creating incremental revenue opportunities as adoption scales.

• Diversification and partnerships: The company’s focus on broadening its DSP mix and expanding into high-growth segments such as Commerce Media, CTV, and mobile app is intended to mitigate concentration risks. Recent partnerships with Walmart Connect and PayPal are expected to unlock new sources of ad spend and bolster data-driven targeting capabilities.

• Macro and industry shifts: Management acknowledged potential headwinds from global economic uncertainty and evolving industry dynamics, including regulatory outcomes such as Google’s antitrust trial. While April trends were described as “healthy,” the leadership remains cautious but optimistic, expecting double-digit revenue growth in the second half of the year as DSP headwinds subside.

Catalysts in Upcoming Quarters

In the coming quarters, the StockStory team will be monitoring (1) the pace of AI-powered AgenticOS adoption and its contribution to both revenue and margin expansion, (2) the impact of new partnerships with Walmart Connect and PayPal on campaign targeting and Commerce Media growth, and (3) signs of stabilization and subsequent acceleration in underlying revenue growth as PubMatic laps the legacy DSP headwind. Broader industry trends and regulatory outcomes will also be important to watch.

PubMatic currently trades at $10.05, down from $10.24 just before the earnings. Is the company at an inflection point that warrants a buy or sell? The answer lies in our full research report (it’s free).

Now Could Be The Perfect Time To Invest In These Stocks

WHILE YOU’RE HERE: Top 9 Market-Beating Stocks. The best stocks don't just beat the market once. They do it again. And again. Robust revenue growth, rising free cash flow, returns on capital that leave their competition in the dust. The market has already rewarded these businesses.

But our AI platform says the party isn't over. Find out which 9 stocks made the cut this week - FREE. Get Our Top 9 Market-Beating Stocks for Free HERE.

Stocks that have made our list include now familiar names such as Nvidia (+1,326% between June 2020 and June 2025) as well as under-the-radar businesses like the once-micro-cap company Tecnoglass (+1,754% five-year return). Find your next big winner with StockStory today.