Tops Markets has purchased four Big M Supermarkets stores in Boonville, Watertown, Sandy Creek and Adams in upstate New York. The stores will be rebranded as Tops by the end of June. "These stores are a natural addition to our current footprint, and we look forward to meeting the needs of our new neighbors and customers, providing them with a positive shopping experience that focuses on variety, freshness, convenience and exceptional value,"
 

Big M, or Big M Supermarkets, is a chain of grocery stores operating in the states of New York and Pennsylvania. Some Big M Supermarkets are owned by independent private owners while the rest of the Big M Supermarkets are operated by P&C Foods, which is a subsidiary of Penn Traffic Co.
History
Nothing much can be found as to the origins of Big M Supermarkets. However, this chain of grocery stores boomed in terms of expansion when it was acquired by P&C Foods, Inc. Big M was bought by P&C Foods, Inc. in the late 1950s as part of its expansion process.
By 1969, there were already 50 Big M stores being operated by P&C Foods. Three more Big M stores were opened around 1979. The expansion of Big M continued and by 1989, there were already 71 Big M supermarkets being run by P&C Foods.