Stocks closed with solid gains Monday, boosted by another round of positive news regarding the development of COVID-19 vaccines, while extending gains late in the session after The Wall Street Journal reported that President-elect Joe Biden would nominate former Federal Reserve Chair Janet Yellen to serve as Treasury secretary in his administration. The Dow Jones Industrial Average /zigman2/quotes/210598065/realtime DJIA -0.12% rose around 330 points, or 1.1%, to end near 29,594, according to preliminary figures, while the S&P 500 /zigman2/quotes/210599714/realtime SPX +0.36% finished up around 20 points, or 0.6%, near 3,578. The Nasdaq Composite /zigman2/quotes/210598365/realtime COMP +0.69% rose around 26 points, or 0.2%, ending the session near 12,424. AstraZeneca on Monday said its vaccine candidate had an efficacy rate of up to 90% in late-stage trials, following positive news earlier this month regarding a vaccine candidate developed by Pfizer Inc. and BioNTech and another developed by Moderna Inc.


