LAMR vs WPP vs OMC vs IPG

For growth investors, Omnicom Group Inc.

(OMC) is the stronger pick with 10. 1% revenue growth year-over-year, versus -1. 8% for The Interpublic Group of Companies, Inc. (IPG). WPP plc (WPP) offers the better valuation at 5. 7x trailing P/E (7. 6x forward), making it the more compelling value choice. Analysts rate Lamar Advertising Company (LAMR) a "Buy" — based on 20 analyst ratings — the highest consensus in this comparison. The "better buy" depends entirely on your goals: growth investors should weight revenue trajectory, value investors should weight P/E and PEG, and income investors should weight dividend yield and streak.

On trailing P/E, WPP plc (WPP) is the cheapest at 5.

7x versus Lamar Advertising Company at 27. 4x. On forward P/E, Omnicom Group Inc. is actually cheaper at 7. 2x — notably different from the trailing picture, reflecting expected earnings growth. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: Lamar Advertising Company wins at 1. 43x versus The Interpublic Group of Companies, Inc. 's 4. 51x — a reasonable growth-adjusted valuation.

Over the past 5 years, Lamar Advertising Company (LAMR) delivered a total return of +78.

0%, compared to -56. 7% for WPP plc (WPP). Over 10 years, the gap is even starker: LAMR returned +216. 9% versus WPP's -58. 8%. Past returns do not guarantee future results, and the stock with the higher historical return may already have its best growth priced in.

By beta (market sensitivity over 5 years), Omnicom Group Inc.

(OMC) is the lower-risk stock at 0. 58β versus WPP plc's 1. 08β — meaning WPP is approximately 85% more volatile than OMC relative to the S&P 500. On balance sheet safety, Omnicom Group Inc. (OMC) carries a lower debt/equity ratio of 98% versus 6% for Lamar Advertising Company — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Omnicom Group Inc.

(OMC) is pulling ahead at 10. 1% versus -1. 8% for The Interpublic Group of Companies, Inc. (IPG). On earnings-per-share growth, the picture is similar: WPP plc grew EPS 390. 0% year-over-year, compared to -103. 6% for Omnicom Group Inc.. Over a 3-year CAGR, OMC leads at 6. 5% annualised revenue growth. Higher growth typically commands a higher valuation multiple — check whether the premium P/E or P/S is justified by the growth rate using the PEG ratio.

Lamar Advertising Company (LAMR) is the more profitable company, earning 25.

9% net margin versus -0. 3% for Omnicom Group Inc. — meaning it keeps 25. 9% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: LAMR leads at 30. 8% versus 9. 0% for WPP. At the gross margin level — before operating expenses — LAMR leads at 38. 2%, reflecting greater pricing power or product mix advantage. Stronger margins indicate durable pricing power, lower cost of revenue, or higher mix of software/services. They are one of the clearest signs of business quality.

The PEG ratio (forward P/E divided by expected earnings growth rate) is the most precise measure of undervaluation relative to growth potential.

By this metric, Lamar Advertising Company (LAMR) is the more undervalued stock at a PEG of 1. 43x versus The Interpublic Group of Companies, Inc. 's 4. 51x. A PEG below 1. 5 suggests fair-to-attractive pricing relative to expected growth. On forward earnings alone, Omnicom Group Inc. (OMC) trades at 7. 2x forward P/E versus 27. 3x for Lamar Advertising Company — 20. 1x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for IPG: 48. 8% to $36. 57.

All stocks in this comparison pay dividends.

WPP plc (WPP) offers the highest yield at 13. 9%, versus 3. 5% for Omnicom Group Inc. (OMC).

For long-horizon retirement investors, Lamar Advertising Company (LAMR) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0.

64), 4. 1% yield, +216. 9% 10Y return). Both have compounded well over 10 years (LAMR: +216. 9%, WPP: -58. 8%), confirming both are viable long-term holds — but the lower-volatility option typically results in less emotional selling during corrections. Retirement portfolios generally favour predictability over maximum returns. Consult a financial advisor before making allocation decisions.

These companies operate in different sectors (LAMR (Real Estate) and WPP (Communication Services) and OMC (Communication Services) and IPG (Communication Services)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

In terms of investment character: LAMR is a mid-cap income-oriented stock; WPP is a small-cap deep-value stock; OMC is a mid-cap income-oriented stock; IPG is a small-cap deep-value stock. These fundamental differences mean investors should not choose between them on a single metric — the "better stock" depends entirely on which of these characteristics aligns with your investment strategy.