U.S. markets kicked off March mildly higher at Monday's opening bell. Investors pulled back on less favorable economic data at home after welcoming China cutting its key interest rates for the second time in just three months. Personal income increased 0.3% in January, while personal spending fell 0.2%. Both slightly missed forecasts. Berkshire Hathaway (BRKA) is in focus as investors comb through Warren Buffett's annual letter to shareholders. Its Class A share missed analyst expectations. Buffett said the size of the company will make it impossible to match past gains. Wynn Resorts (WYNN) is ousting its chairman Steve Wynn's ex-wife from the board. An SEC filing shows Elaine Wynn, who has served for more than a decade will not be re-nominated when her term expires.