Shares of Charles River Laboratories International Inc. (CRL) advanced 3.26% to $175.07 on Wednesday, marking a second consecutive day of gains for the stock. This performance occurred against a backdrop of strong broader market activity, with the S&P 500 Index rising 2.51% to 6,782.81 and the Dow Jones Industrial Average climbing 2.85% to 47,909.92. The stock's positive movement contributed to an overall strong trading session characterized by significant gains across major market indices. The article highlights that this was a notably positive day for CRL, with shares outperforming competitors in the current market environment. However, the provided content primarily focuses on reporting these specific trading figures and the concurrent rise of major benchmarks like the S&P 500 and Dow Jones Industrial Average. The report includes standard data disclaimers noting that intraday data is delayed at least 15 minutes or subject to exchange requirements, while end-of-day historical data is sourced from FACTSET. All quotes in the article reflect trades reported through Nasdaq only during local exchange time. MarketWatch Automation supported this reporting by leveraging world-class markets data from Dow Jones and FactSet, alongside a partnership with Automated Insights, to deliver timely and accurate content at record speed. The publication is dated April 8, 2026, and notes that the provided information reflects real-time last sale data subject to Nasdaq reporting standards. No further details regarding company-specific earnings, operational results, or future outlook for Charles River Laboratories International are included in the article text beyond these market performance metrics.