 Now, the top three chains in the U.S. are Regal Entertainment Group, AMC Entertainment Inc and Cinemark Theatres.In 1995, Carmike was the largest chain in the United States- now, the major chains include AMC Entertainment Inc – 5,206 screens in 346 theaters, Cinemark Theatres – 4,457 screens in 334 theaters, Landmark Theatres – 220 screens in 54 theaters, Marcus Theatres – 681 screens in 53 theaters.National Amusements – 409 screens in 32 theaters and Regal Entertainment Group – 7,334 screens in 588 cinemas.