Omnicom's $400M Trading Volume Ranks 292nd as Stock Dips 0.16% Amid Muted Sector Demand and Macro Uncertainty

On October 8, 2025, Omnicom Group (OMC) traded with a volume of $400 million, ranking 292nd in market activity for the day. The stock closed 0.16% lower, reflecting subdued investor activity amid mixed sector dynamics.

Recent developments suggest muted demand for communications and advertising services, a sector where Omnicom operates. Analysts noted that broader macroeconomic uncertainty and shifting client budgets may have contributed to the stock's marginal decline. While no major corporate announcements were reported, the company's performance remains closely tied to overall market sentiment toward discretionary spending sectors.

To construct this back-test precisely, I still need a few details that were not specified in your request. Please let me know your preference (or feel free to accept the suggested default in brackets): 1. Universe of tradable stocks • U.S. common shares listed on NYSE + NASDAQ + AMEX (≈ 5 000 names) [default] • Another specific universe (e.g., only S&P 1500 constituents, a regional market, etc.) 2. “Daily trading volume” definition • Shares traded [default] • Dollar volume (shares × close price) 3. Rebalancing mechanics • Rank by previous-day data, buy at today’s open, sell at today’s close (intraday, ~6.5-hour hold) • Rank by previous-day data, buy at today’s close, sell at next day’s close (overnight+intraday, 1-day calendar hold) [default] • Another convention 4. Transaction costs / slippage assumptions • Ignore (raw strategy P&L) [default] • Specify per-trade cost (e.g., 1 bp each side) 5. Any risk controls (stop-loss, max drawdown, etc.) • None [default] • Please specify Once these are confirmed I can generate the data retrieval plan and run the back-test.