Ten large-cap stocks were top performers last week, with First Majestic Silver leading gains at 25.23% following better-than-expected Q4 results. Other notable gainers include Moderna (19.68%) on FDA seasonal flu vaccine review news, Global Payments (19.52%) with strong Q4 earnings and a $2.6B buyback authorization, and Coinbase (11.32%). Companies like Omnicom, Garmin, Figma, and Pan American Silver also reported strong quarterly results and positive guidance.

Omnicom Group Inc. (NYSE: OMC) announced a quarterly dividend of $0.80 per share, payable on April 9, 2026 to shareholders of record as of March 11, 2026.

The Riverside Company's portfolio company Impact XM has acquired Jack Morton from Omnicom, merging two leading brand experience and live event marketing agencies. The combined entity will operate under the Jack Morton name with 20 offices globally, offering integrated experiential marketing services. Impact XM CEO Jared Pollacco will lead the combined business.

Clear Channel Outdoor surged 8.22% after announcing a $6.2 billion all-cash acquisition by Mubadala Capital and TWG Global at $2.43 per share. The deal includes a 45-day go-shop period for alternative offers. Meanwhile, the broader market declined with the S&P 500 falling 0.36% and Nasdaq dropping 0.59%.

SanDisk was added to the S&P 500 index, replacing Interpublic Group, following its spin-off from Western Digital in February 2025. The company's strong performance in AI-related flash memory storage has driven significant stock gains and institutional interest.

Global advertising market expected to grow from $667.8 billion in 2024 to $1 trillion by 2033, driven by digital transformation, mobile usage, and personalized advertising strategies.

Gardner Lewis Asset Management invested $13.7 million in Interpublic Group (IPG), acquiring 491,157 shares in Q3, despite the company experiencing revenue decline and market challenges.

The U.S. advertising market is projected to grow from $201.01 billion in 2024 to $281.92 billion by 2033, driven by digital innovation, personalized marketing strategies, and technological advancements, despite challenges in privacy regulations and audience fragmentation.

The gaming marketing services market is projected to grow from $16.12 billion in 2025 to $22.77 billion by 2030, driven by advanced marketing technologies, personalized strategies, and innovative engagement approaches across multiple gaming platforms.

BlueFocus, China's leading marketing services provider, plans a Hong Kong IPO despite challenges including thin profit margins and declining revenue. The company aims to expand globally while facing economic headwinds in its domestic market.

Hitachi Rail has agreed to acquire Omnicom, a cutting-edge digital rail monitoring business, from Balfour Beatty. The acquisition will strengthen Hitachi Rail's new digital asset management platform, HMAX, by integrating Omnicom's remote monitoring and measurement solutions.

Several large-cap stocks, including Super Micro Computer, Adobe, and Nucor, experienced significant losses last week. The article analyzes the reasons behind the stock declines and provides insights for investors.