Shares of Danaher Corp. DHR, +3.29% rose 0.7% in premarket trading Tuesday, after the maker of medical, industrial and commercial products provided an upbeat first-quarter profit outlook. The company said it expects first-quarter core revenue growth to be above the high-end of previously provided guidance. The company had said in January that it expected first-quarter core revenue growth in the "mid-to-high-teens" percentage range. The company is scheduled to report first-quarter results on April 22, before the opening bell. The stock has lost 2.1% over the past three months while the S&P 500 SPX, +0.09% has gained 8.4%.