Abbott earn 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 Line While strong estimate revisions for Abbott have attracted decent investments and pushed the stock 12.9% 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.