The Duckhorn Portfolio is a collection of premium wineries located in the Napa Valley region of California. The company was founded in 1976 by Dan and Margaret Duckhorn, and has since grown to include several other wineries, including Paraduxx, Goldeneye, and Migration. The Duckhorn Portfolio is known for producing high-quality wines that are both elegant and approachable, and the company's wines have received numerous awards and accolades over the years. The Duckhorn Portfolio is committed to sustainable and responsible winemaking practices, and the company's vineyards are certified by the California Sustainable Winegrowing Alliance.