Methodology
The Kerrigan Index™ is composed of the seven largest publicly traded auto retail companies with operations focused on the US market, including CarMax, AutoNation, Penske Automotive Group, Lithia & Driveway, Group 1 Automotive, Asbury Automotive Group and Sonic Automotive.
The Kerrigan Index™ is weighted by the market capitalization of each company and benchmarked at 100 on 1/3/2000.