Videos The Zacks Rank is comprised of four factors called Agreement, Magnitude, Upside and Surprise. Discover how these four factors can lead to dramatic stock gains. Articles You May Like iRobot (IRBT) and Michael Kors (KORS): Bull & Bear of the Day 262 TIP. The REPO Markets with Luke Gromen RWH002: Investing Wisely In An Uncertain World W/ Howard Marks 385 TIP. Breaking the Rules w/ David Gardner Nvidia (NVDA) Stock Earnings: What Should Investors Watch For?