Ecopetrol
EC
Apple
AAPL
D.R. Horton
DHI
4
Meritage Homes
MTH
5
Lennar Corp
LEN
EXACT Sciences Corp. is a cancer screening and diagnostics company. The firm focuses on the early detection and prevention of some forms of cancer. It offers a non-invasive screening test called Cologuard for the early detection of colorectal cancer and pre-cancer and Oncotype DX. The company was founded on February 10, 1995, and is headquartered in Madison, WI.