Shake Shack Inc. SHAK recently provided preliminary unaudited results for the fiscal fourth quarter and the fiscal year 2020. The company announced that both average weekly sales and same-sack sales have witnessed continued improvement throughout the quarter under review. Following the preliminary results, the company’s shares gained 11.8% on Jan 12, 2021. Notably, in the past three months, the company’s shares have surged 43%, compared with the industry’s growth of 4.6%.Average weekly sales in the fiscal fourth quarter increased to $62,000 from $58,000 in third-quarter fiscal 2020 and $45,000 in second-quarter fiscal 2020. Moreover, in the quarter under review, same-Shack sales fell 17.4%, compared with declines of 31.7% and 49% in the fiscal third and second quarter, respectively. Despite the coronavirus pandemic, the same-Shack sales at the company’s suburban locations were nearly flat in the fourth quarter. However, urban Shack-sales decreased 31%.Preliminary revenues in fourth-quarter 2020 were $157 million (including 53rd week), up 4% year over year. In third-quarter 2020, sales declined 17.3%. However, excluding 53rd week total revenues in the quarter declined 3.3% year over year.Meanwhile, shack sales in the fourth quarter were $152.5 million, up 4.6% year over year. In third-quarter fiscal 2020, shack sales declined 17.1%. Preliminary licensed revenues in the fourth quarter declined 10.6% to $5 million.In fourth-quarter 2020, the company opened 13 net system-wide Shacks, which includes eight domestic company-operated Shacks and five net licensed Shacks. At the end of quarter, two domestic company-operated Shacks and 17 licensed Shacks remained temporarily closed. The company is planning to open 35 to 40 domestic company-operated Shacks in 2021. Preliminary Fiscal 2020 ResultsRevenues for fiscal 2020 were $522.9 million, down 12.1% year over year. Excluding the 53rd week, total revenues declined 13.9%. Same-Shack sales slumped 27.8% in fiscal 2020.The company opened 36 net system-wide Shacks, comprising 20 domestic company-operated Shacks and 16 net licensed Shacks.Zacks Rank & Key PicksShake Shack currently carries a Zacks Rank #3 (Hold). You can see the complete list of today’s Zacks #1 Rank (Strong Buy) stocks here.Some better-ranked stocks in the same space are Jack in the Box Inc. JACK, Arcos Dorados Holdings Inc. ARCO and Yum! Brands, Inc. YUM, each carrying a Zacks Rank #2 (Buy).Jack in the Box has a three-five year earnings per share growth rate of 10.6%.Arcos Dorados and Yum! Brands’ 2021 earnings are expected to rise 127.3% and 12.1%, respectively.The Hottest Tech Mega-Trend of AllLast year, it generated $24 billion in global revenues. By 2020, it's predicted to blast through the roof to $77.6 billion. Famed investor Mark Cuban says it will produce "the world's first trillionaires," but that should still leave plenty of money for regular investors who make the right trades early.See Zacks' 3 Best Stocks to Play This Trend >>Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report Jack In The Box Inc. (JACK): Free Stock Analysis Report Yum Brands, Inc. (YUM): Free Stock Analysis Report Arcos Dorados Holdings Inc. (ARCO): Free Stock Analysis Report Shake Shack, Inc. (SHAK): Free Stock Analysis Report To read this article on Zacks.com click here.