[1] Supermarket News ranked Giant Eagle 21st on the "Top 75 North American Food Retailers" based on sales of $11 billion.

Giant Eagle quickly expanded across western Pennsylvania, weathering the Great Depression and World War II.

[10] The chain remained based solely in western Pennsylvania until the 1980s, when it bought Youngstown, Ohio-based wholesaler Tamarkin Company, and its Valu-King stores that were converted to the Giant Eagle name.

Around the mid- or late 1990s, Giant Eagle later reached Cleveland by acquiring the Rini-Rego Stop-n-Shop stores in the area.

Giant Eagle emerged as one of the dominant supermarket chains in Northeast Ohio, competing mainly against the New York-based Tops, from which it purchased 18 stores in October 2006.

Giant Eagle first entered what it calls its "Columbus Region" in late 2000, opening three large newly built stores at Sawmill and Bethel Rd., Lewis Center, and Dublin-Granville Rd., with two more following in 2002 and 2003 at Gahanna and Hilliard-Rome Rd.

In 2004, Giant Eagle purchased nine former Big Bear stores in Columbus, Newark, and Marietta from parent company Penn Traffic.

A new Giant Eagle opened in Lancaster, in November 2008, and the former Big Bear located at Blacklick Crossing has undergone an expansion and remodeling.

[11] Much as it has done in Pennsylvania alongside Sheetz, GetGo plans to join Ricker's in having Indiana change their laws regarding alcohol sales.

In addition, Bill Artman was appointed CEO, which marks the first time the position was not held by a member of the Shapira family since 1968.

The range of services includes Redbox video terminals, Happy Returns, dry cleaning, Bissell carpet cleaner rental, Primo Water, lottery, the Flashfood app, Coinstar, grocery pickup and delivery, and pharmacies.

[21] An additional Market District store is under construction in Pittsburgh as the replacement for the previous Giant Eagle location on Shakespeare Street.

[26] The Bexley location is notable as it features a full restaurant and bar inside, alongside groceries in a 30,000 square foot store that spans two floors.

Giant Eagle began adding pharmacies to their stores in the 1980s, along with other "store-within-a-store" concepts photo, floral, and video rental.

[29] Giant Eagle partnered with Arlington Lens Supply in 2010 to sell contact lenses online via their website.

[30] The Shapira family who owns Giant Eagle provided Phar-Mor founder Mickey Monus with the financing necessary to start his chain.

In the mid- to late 2000s, Giant Eagle phased these stores out in favor of Redbox automated retail machines, with Ticketmaster sales moved to the customer service desk.

The stores accepted most major vision plans and offered a wide variety of designer frames, as well as exclusive Giant Eagle brands.

Noting that "some programs don't prove viable across a broad number of stores", Giant Eagle chose to close its Optical locations beginning in August 2009.

In 2012, Giant Eagle opened a new low-cost supermarket concept called Good Cents, located in Ross Township, Pennsylvania.

Good Cents eventually replaced all rebranded Valu King as Giant Eagle's low-cost brand.

This campaign featured store employees and customers, that put their own spin on what Giant Eagle offers.

This campaign features store employees and customers, that put their own spin on what Giant Eagle offers.

The chain, under pressure from Wal-Mart, has implemented a lower-prices campaign throughout its stores, featured on products that customers buy most.

Giant Eagle also sells Topco-produced Valu Time products, which are substantially cheaper than other private-label and name-brand merchandise.

Before these brands existed, Giant Eagle generally used Topco's Food Club label as the generic product.

[citation needed] Until 2022,[41] Giant Eagle had the highest market share of any supermarket chain in the Pittsburgh area, giving it a de facto monopoly in some parts of western Pennsylvania; only stores supplied by United Natural Foods (UNFI) such as Shop 'n Save, FoodLand, and County Market have much of a presence in the area.

The construction of new supercenters, including Walmart and others, and no frills supermarkets such as Aldi attracting value-seeking customers have somewhat decreased Giant Eagle's regional market share in the first decades of the twenty-first century.

Giant Eagle's market dominance in Greater Pittsburgh has led to accusations of the company buying up either existing supermarket locations or prime real estate for the sole purpose of not allowing a competitor come in.

Despite the perceived monopoly, Giant Eagle holds only a 32% market share in Pittsburgh as of August 2018, just barely edging out Walmart.