U.S. Stock Indices Show Mixed Results, Nasdaq Slips 0.09%

U.S. stock markets opened with mixed performance as the Dow Jones Industrial Average rose 0.21% and the S&P 500 gained 0.05%, while the Nasdaq Composite fell 0.09%. BioNTech (BNTX) shares dropped approximately 8.7% following the company's announcement to terminate its Phase 2 clinical trial for colorectal cancer.