People take pictures on an overpass with a display of stock information in front of buildings in the Lujiazui financial district in Shanghai, China August 6, 2024. REUTERS/Nicoco Chan/File photo ...

St. Paul, MN, Aug. 12--3M, the maker of Post-It notes and fiber optic connectors, on Monday said it set a 2-for-1 split of its common stock, spurring its high-flying shares to a new all-time high.