Categorize the input news's emotional tone into one of three groups.
Options: positive, negative

S&P 500 stocks have experienced a compound annual growth rate (CAGR) of 3.5% in real trailing 12-month total revenue per share over the past five years. The benchmark index for the U.S. stock market closed at 4,328.87 on Friday, up nearly 82.5% over the past five years through March 4.
positive