Spero Therapeutics, Inc. (SPRO) Reports Q1 Loss, Misses Revenue Estimates

Company Performance - Spero Therapeutics reported a quarterly loss of $0.25 per share, which was better than the Zacks Consensus Estimate of a loss of $0.55, representing an earnings surprise of 54.55% [1] - The company posted revenues of $5.87 million for the quarter ended March 2025, missing the Zacks Consensus Estimate by 46.60%, compared to revenues of $9.27 million a year ago [2] - Over the last four quarters, Spero Therapeutics has surpassed consensus EPS estimates two times and topped consensus revenue estimates two times [2] Stock Outlook - Spero Therapeutics shares have declined approximately 40.8% since the beginning of the year, while the S&P 500 has only declined by 0.6% [3] - The current consensus EPS estimate for the upcoming quarter is -$0.32 on $11 million in revenues, and for the current fiscal year, it is -$2.32 on $60 million in revenues [7] - The estimate revisions trend for Spero Therapeutics is currently unfavorable, resulting in a Zacks Rank 4 (Sell), indicating expected underperformance in the near future [6] Industry Context - The Medical - Biomedical and Genetics industry, to which Spero Therapeutics belongs, is currently in the top 35% of over 250 Zacks industries, suggesting a favorable industry outlook [8] - Empirical research indicates a strong correlation between near-term stock movements and trends in earnings estimate revisions, which can impact Spero Therapeutics' stock performance [5]