Global advertising giant Omnicom Group (NYSE: OMC) reported Q1 CY2026 results topping the market’s revenue expectations, with sales up 69.2% year on year to $6.24 billion. Its non-GAAP profit of $1.90 per share was 3.1% above analysts’ consensus estimates.

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"Our strong first quarter performance as the new Omnicom reflects our new integrated capabilities, core portfolio operations, and successful integration activities. With the largest global media platform, proprietary data and identity capabilities, and our AI-powered Omni platform in full operation, we are uniquely equipped to help clients address an increasingly fragmented and complex marketing environment," said John Wren, Chairman and Chief Executive Officer of Omnicom.

Company Overview

With a vast network of creative agencies that helped craft some of the most memorable ad campaigns in history, Omnicom Group (NYSE: OMC) is a strategic holding company that provides advertising, marketing, and communications services to many of the world's largest companies.

Revenue Growth

A company’s long-term sales performance can indicate its overall quality. Any business can put up a good quarter or two, but many enduring ones grow for years.

With $19.82 billion in revenue over the past 12 months, Omnicom Group is a behemoth in the business services sector and benefits from economies of scale, giving it an edge in distribution. This also enables it to gain more leverage on its fixed costs than smaller competitors and the flexibility to offer lower prices.

As you can see below, Omnicom Group grew its sales at a solid 8.5% compounded annual growth rate over the last five years. This is an encouraging starting point for our analysis because it shows Omnicom Group’s demand was higher than many business services companies.

We at StockStory place the most emphasis on long-term growth, but within business services, a half-decade historical view may miss recent innovations or disruptive industry trends. Omnicom Group’s annualized revenue growth of 15.4% over the last two years is above its five-year trend, suggesting its demand was strong and recently accelerated.

Omnicom Group also reports organic revenue, which strips out one-time events like acquisitions and currency fluctuations that don’t accurately reflect its fundamentals. Over the last two years, Omnicom Group’s organic revenue averaged 4.3% year-on-year growth. Because this number is lower than its two-year revenue growth, we can see that some mixture of acquisitions and foreign exchange rates boosted its headline results.

This quarter, Omnicom Group reported magnificent year-on-year revenue growth of 69.2%, and its $6.24 billion of revenue beat Wall Street’s estimates by 8.7%.

Looking ahead, sell-side analysts expect revenue to grow 25.3% over the next 12 months, an improvement versus the last two years. This projection is eye-popping for a company of its scale and suggests its newer products and services will spur better top-line performance.

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Adjusted Operating Margin

Omnicom Group has been an efficient company over the last five years. It was one of the more profitable businesses in the business services sector, boasting an average adjusted operating margin of 14.8%.

Analyzing the trend in its profitability, Omnicom Group’s adjusted operating margin decreased by 1.3 percentage points over the last five years. This raises questions about the company’s expense base because its revenue growth should have given it leverage on its fixed costs, resulting in better economies of scale and profitability.

This quarter, Omnicom Group generated an adjusted operating margin profit margin of 10.4%, down 2.8 percentage points year on year. This contraction shows it was less efficient because its expenses grew faster than its revenue.

Earnings Per Share

We track the long-term change in earnings per share (EPS) for the same reason as long-term revenue growth. Compared to revenue, however, EPS highlights whether a company’s growth is profitable.

Omnicom Group’s solid 10.4% annual EPS growth over the last five years aligns with its revenue performance. This tells us it maintained its per-share profitability as it expanded.

Like with revenue, we analyze EPS over a more recent period because it can provide insight into an emerging theme or development for the business.

Omnicom Group’s two-year annual EPS growth of 7.9% was subpar and lower than its 15.4% two-year revenue growth.

We can take a deeper look into Omnicom Group’s earnings to better understand the drivers of its performance. Omnicom Group’s adjusted operating margin has declined over the last two yearswhile its share count has grown 55%. This means the company not only became less efficient with its operating expenses but also diluted its shareholders.

In Q1, Omnicom Group reported adjusted EPS of $1.90, up from $1.70 in the same quarter last year. This print beat analysts’ estimates by 3.1%. We also like to analyze expected EPS growth based on Wall Street analysts’ consensus projections, but there is insufficient data.

Key Takeaways from Omnicom Group’s Q1 Results

We were impressed by how significantly Omnicom Group blew past analysts’ revenue expectations this quarter. We were also glad its EPS outperformed Wall Street’s estimates. Zooming out, we think this quarter featured some important positives. The stock remained flat at $76.50 immediately following the results.

So do we think Omnicom Group is an attractive buy at the current price? The latest quarter does matter, but not nearly as much as longer-term fundamentals and valuation, when deciding if the stock is a buy. We cover that in our actionable full research report which you can read here (it’s free).