New York, United States  — The S&P 500 and Nasdaq indexes both extended earlier gains on Monday, closing at records again as investors await key inflation data later this week. The broad-based S&P 500 Index added 0.1 percent to 5,572.85, while the tech-heavy Nasdaq Composite Index rose by 0.3 percent to 18,403.74. The Dow Jones Read The Rest at :