As of 2026-07-18, the Omnicom Group Inc. (OMC) stock price today is 81.73. Based on this price, the company has a market capitalization of $23.98B, with a P/E ratio of 202.48. On 2026-07-18, OMC traded between 81.47 and 85.18. Today’s stock price is 0.32% above the daily low and 4.05% below the daily high, placing OMC near the lower end of its most recent trading range. Trading volume currently stands at 3.20M, compared with an average daily volume of 5.05M. This suggests that trading activity is below its usual level than usual. Over the past year, Omnicom Group Inc. shares have traded between 66.33 and 87.17. At today’s price, OMC is 23.22% above its 52-week low and 6.24% below its 52-week high.