Monday, 25 May 2026: Markets Hit Record Highs as Merck Surges and Nvidia Slips

US equity markets rallied on Friday (22 May) ahead of the holiday long weekend albeit finished off their best levels of the session – Dow rose +294-points or +0.58% to log a fresh record closing high of 50,579.70 for a second consecutive session after scaling a record intra-day peak (50,830.24). Merck & Co rallied +5.64% to be the leading performer in the 30-stock index following a report by STAT News that its lung cancer treatment being developed with China-based Kelun-Biotech, sacituzumab tirumotecan, cut tumour progression risk by 65% and also yielded a survival benefit in a Phase 3 study conducted in China. The drug was used on patients in combination with Merck’s Keytruda, the company’s immunotherapy used to treat a wide variety of cancers. However, Nvidia Corp (down -1.9%) declined for a second session running following the release of its first quarter result after the close last Wednesday (20 May).