Wall Street continued its string of new records on Monday, as the Nasdaq and S&P 500 notched all-time highs amid promising news about a new coronavirus treatment. The benchmark Dow Jones Industrial Average also climbed, gaining nearly 1.4 percent by the closing bell to 28,308.46. The broad-based S&P 500 jumped 1.0 percent to end the session at 3,431.28, while the tech-rich Nasdaq Composite Index rose 0.6 percent to 11,379.72, its third consecutive high point, bringing the tally closer to 40 records for the year. hs/cs