Universal Logistics (ULH) appears an attractive pick given a noticeable improvement in the company's earnings outlook. The stock has been a strong performer lately, and the momentum might continue with analysts still raising their earnings estimates for the company.Analysts' growing optimism on the earnings prospects of this trucking and logistics company is driving estimates higher, which should get reflected in its stock price. After all, empirical research shows a strong correlation between trends in earnings estimate revisions and near-term stock price movements. This insight is at the core of our stock rating tool -- the Zacks Rank.The five-grade Zacks Rank system, which ranges from a Zacks Rank #1 (Strong Buy) to a Zacks Rank #5 (Strong Sell), has an impressive externally-audited track record of outperformance, with Zacks #1 Ranked stocks generating an average annual return of +25% since 2008.For Universal Truckload, there has been strong agreement among the covering analysts in raising earnings estimates, which has helped push consensus estimates considerably higher for the next quarter and full year.Current-Quarter Estimate RevisionsFor the current quarter, the company is expected to earn $1.35 per share, which is a change of +82.43% from the year-ago reported number.Over the last 30 days, one estimate has moved higher for Universal Truckload compared to no negative revisions. As a result, the Zacks Consensus Estimate has increased 62.65%.Current-Year Estimate RevisionsThe company is expected to earn $5.80 per share for the full year, which represents a change of +80.12% from the prior-year number.In terms of estimate revisions, the trend for the current year also appears quite encouraging for Universal Truckload. Over the past month, one estimate has moved higher compared to no negative revisions, helping the consensus estimate increase 27.47%.Favorable Zacks RankThanks to promising estimate revisions, Universal Truckload currently carries a Zacks Rank #1 (Strong Buy). The Zacks Rank is a tried-and-tested rating tool that helps investors effectively harness the power of earnings estimate revisions and make the right investment decision. You can see the complete list of today's Zacks #1 Rank (Strong Buy) stocks here.Our research shows that stocks with Zacks Rank #1 (Strong Buy) and 2 (Buy) significantly outperform the S&P 500.Bottom LineInvestors have been betting on Universal Truckload because of its solid estimate revisions, as evident from the stock's 39.4% gain over the past four weeks. As its earnings growth prospects might push the stock higher, you may consider adding it to your portfolio right away. Want to Know the #1 Semiconductor Stock for 2022? Few people know how promising the semiconductor market is. Over the last couple of years, disruptions to the supply chain have caused shortages in several industries. The absence of one single semiconductor can stop all operations in certain industries. This year, companies that create and produce this essential material will have incredible pricing power. For a limited time, Zacks is revealing the top semiconductor stock for 2022. You'll find it in our new Special Report, One Semiconductor Stock Stands to Gain the Most. Today, it's yours free with no obligation.>>Give me access to my free special report.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 Universal Logistics Holdings, Inc. (ULH): Free Stock Analysis Report To read this article on Zacks.com click here.