Beyond Meat Inc. /zigman2/quotes/211617595/composite BYND +1.55% stock rose 3.4% in early Thursday trading after McDonald's Corp. /zigman2/quotes/203508018/composite MCD -2.76% announced it would test the McPlant sandwich in eight U.S. restaurants for a limited time. The McPlant, which was announced late 2020, is the plant-based burger McDonald's created in partnership with Beyond Meat. The two companies announced an exclusive three-year agreement in February. Details on the test are scarce, but McDonald's said in a post on its site that "this particular test will help us understand how offering a burger with a plant-based patty impacts the kitchens in our restaurants." Beyond Meat stock has dropped 13.3% for the year to date. McDonald's shares have risen 13.8%. And the Dow Jones Industrial Average /zigman2/quotes/210598065/realtime DJIA -2.53% is up 13.4% for the period.