First Hawaiian (FHB) could be a solid addition to your portfolio given a notable revision in the company's earnings estimates. While the stock has been gaining lately, the trend might continue since its earnings outlook is still improving.The rising trend in estimate revisions, which is a result of growing analyst optimism on the earnings prospects of this bank holding company, 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. Our stock rating tool -- the Zacks Rank -- has this insight at its core.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.Consensus earnings estimates for the next quarter and full year have moved considerably higher for First Hawaiian, as there has been strong agreement among the covering analysts in raising estimates.Current-Quarter Estimate RevisionsThe earnings estimate of $0.55 per share for the current quarter represents a change of +7.84% from the number reported a year ago.Over the last 30 days, the Zacks Consensus Estimate for First Hawaiian has increased 9% because three estimates have moved higher compared to no negative revisions.Current-Year Estimate RevisionsFor the full year, the earnings estimate of $2.04 per share represents a change of -5.56% from the year-ago number.There has been an encouraging trend in estimate revisions for the current year as well. Over the past month, four estimates have moved up for First Hawaiian versus no negative revisions. This has pushed the consensus estimate 7.25% higher.Favorable Zacks RankThanks to promising estimate revisions, First Hawaiian 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 First Hawaiian because of its solid estimate revisions, as evident from the stock's 14.8% 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 First Hawaiian, Inc. (FHB): Free Stock Analysis Report To read this article on Zacks.com click here.