Olin (OLN) Shares Up 21% in 6 months: What’s Driving the Stock? Posted byZacks Equity Research December 24, 2021 Leave a comment on Olin (OLN) Shares Up 21% in 6 months: What’s Driving the Stock? Olin (OLN) is gaining from productivity actions, the Lake City U.S. Army contract and upbeat prospects.