Giant

Giant rose a dozen places, from 43 to 31, in the Fuels 50 ranking. It also increased its market efficiency, from 1.43 last year to 1.57 this year, and improved its market share, from 0.08% last year to 0.09% this year, according to OPIS.

The company is part of San Antonio-based Andeavor, formerly Tesoro Corp. Tesoro acquired Western Refining Inc. in 2016. And Tesoro changed its name to Andeavor in 2017.

Andeavor is an integrated marketing, logistics and refining company with 10 refineries in the midcontinent and western United States. It owns a retail-marketing system that includes about 3,100 gas stations and c-stores selling fuel under the Arco, SuperAmerica, Shell, Exxon, Mobil, Tesoro, USA Gasoline and Giant brands.

Andeavor is expanding its network of stations by leveraging its brand portfolio and converting more stations to a company-owned and -operated model. Under Tesoro, the company had converted most stations to a multisite operator (MSO) model.