Core Viewpoint - Glaukos (GKOS) has received an upgrade to a Zacks Rank 2 (Buy), indicating a positive outlook on its earnings estimates, which is a significant factor influencing stock prices [1][3]. Earnings Estimates and Stock Price Movement - The Zacks rating system reflects changes in earnings estimates, which are strongly correlated with stock price movements, particularly influenced by institutional investors [4][6]. - An increase in earnings estimates typically leads to higher fair value calculations by institutional investors, resulting in buying or selling actions that affect stock prices [4]. Recent Performance and Outlook - Glaukos is projected to earn -$0.81 per share for the fiscal year ending December 2025, showing no year-over-year change, but the Zacks Consensus Estimate has increased by 9.3% over the past three months [8]. - The upgrade to Zacks Rank 2 places Glaukos in the top 20% of Zacks-covered stocks, suggesting potential for market-beating returns in the near term [10]. Zacks Rating System - The Zacks Rank system categorizes stocks into five groups based on earnings estimates, with a proven track record of Zacks Rank 1 stocks generating an average annual return of +25% since 1988 [7][9]. - The system maintains a balanced distribution of ratings, ensuring that only the top 5% of stocks receive a "Strong Buy" rating, while the next 15% receive a "Buy" rating [9].