US Stock Market Move | McDonald's Corporation (MCD.US) fell nearly 5%, facing a major test at Investor Day amid sluggish U.S. business.

On Wednesday, McDonald's Corporation (MCD.US) opened lower and drifted down, falling nearly 5% as of press time. The stock has declined nearly 30% cumulatively since March. On the news front, McDonald's Corporation will hold a key "Investor Day" event on September 23. The update is expected to give investors insight into how management plans to revive growth momentum in the U.S. market while sustaining growth in international markets. Although McDonald's Corporation has largely outperformed fast-food competitors in recent years, the company is trying to avoid a prolonged slump in the United Statesespecially as Burger King gains speed. After its U.S. business experienced its slowest growth in more than a year, the company is adjusting its value-strategy mix. According to a message to operators, the company will work with franchisees in the coming weeks to develop a "longer-term" plan that can attract value-conscious diners. At the same time, McDonald's Corporation is "building a short-term transition plan," rolling out temporary products and digital offers focused on categories that are currently selling well. On its app, customers can get a breakfast sandwich for $2, or free fries with a minimum purchase of $1.