Airbnb, Inc. (ABNB) could be a solid choice for investors given the company's remarkably improving earnings outlook. While the stock has been a strong performer lately, this trend might continue since analysts are still raising their earnings estimates for the company.The rising trend in estimate revisions, which is a result of growing analyst optimism on the earnings prospects of this 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.For Airbnb, Inc. 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.The chart below shows the evolution of forward 12-month Zacks Consensus EPS estimate:12 Month EPSCurrent-Quarter Estimate RevisionsFor the current quarter, the company is expected to earn $0.30 per share, which is a change of +275% from the year-ago reported number.The Zacks Consensus Estimate for Airbnb, Inc. has increased 27.05% over the last 30 days, as eight estimates have gone higher while two have gone lower.Current-Year Estimate RevisionsThe company is expected to earn $2.58 per share for the full year, which represents a change of +552.63% from the prior-year number.The revisions trend for the current year also appears quite promising for Airbnb, Inc. with five estimates moving higher over the past month compared to two negative revisions. The consensus estimate has also received a boost over this time frame, increasing 5.98%.Favorable Zacks RankThanks to promising estimate revisions, Airbnb, Inc. currently carries a Zacks Rank #2 (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 LineWhile strong estimate revisions for Airbnb, Inc. have attracted decent investments and pushed the stock 8.2% higher over the past four weeks, further upside may still be left in the stock. So, you may consider adding it to your portfolio right away. Zacks Names "Single Best Pick to Double" From thousands of stocks, 5 Zacks experts each have chosen their favorite to skyrocket +100% or more in months to come. From those 5, Director of Research Sheraz Mian hand-picks one to have the most explosive upside of all. It’s a little-known chemical company that’s up 65% over last year, yet still dirt cheap. With unrelenting demand, soaring 2022 earnings estimates, and $1.5 billion for repurchasing shares, retail investors could jump in at any time. This company could rival or surpass other recent Zacks’ Stocks Set to Double like Boston Beer Company which shot up +143.0% in little more than 9 months and NVIDIA which boomed +175.9% in one year.Free: See Our Top Stock and 4 Runners Up >>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 Airbnb, Inc. (ABNB): Free Stock Analysis ReportTo read this article on Zacks.com click here.Zacks Investment Research