Oklahoma pink sheet stocks not all that pink
Energy, plastics, multimedia technology and corrections define Oklahoma 's top companies among the pink sheets — publicly traded but over the counter, not listed on a stock exchange.
Literally define.
Of the top six, two are energy companies, Reserve Petroleum Co. and Beard Co. , both in Oklahoma City .
The plastics company is manufacturer-recycler Greystone Logistics in Tulsa .
The tech...
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