According to Reuters, “Trian Group said on Monday that it owned a 9.7 percent stake in Domino’s Pizza Inc (DPZ.N) as of May 4, and Domino’s shares rose nearly 3 percent after hours.”

“The hedge fund controlled by investor Nelson Peltz made its ownership of 6 million shares, or 9.7 percent of the stock, public in a filing with U.S. securities regulators. Peltz has in the past pushed for change at consumer companies ranging from ketchup maker H.J. Heinz Co (HNZ.N) to fast-food chain Wendy’s (WEN.N) and luxury jewelry retailer Tiffany & Co (TIF.N). In February, Trian offered to buy Family Dollar Stores Inc (FDO.N).”