12. ARNC-US Arconic, Inc.
Headquartered in Pittsburgh, Arconic, Inc., formerly Alcoa, Inc., specializes in the manufacture of lightweight metals. Arconic ended 2018 at $16.86 a share and began 2020 at $30.77 a share, for an 82.5% return on investment in 2019 with a 0.3% current dividend yield.
