graphic packaging holding co.&rsquos stock gained more than 2 percent in trading thursday on wall street after the company announced it was acquiring certain mill operations in canada from cascades inc.graphic packaging international inc., a subsidiary of the sandy springs paper packaging manufacturer, said it is paying cascades&rsquo norampac division 39 million for the packaging operations. the mills are in cobourg and mississauga, ontario winnipeg, manitoba and jonquiere and east angus, quebec.graphic packaging closed thursday at 13.11, up 26 cents, after reaching a new 52week high of 13.36. the stock, however, traded lower in afterhours trading.graphic packaging makes packaging products for food, beverage and other consumer products companies.cascades manufactures paper towels, toilet tissue and other paper products at plants in canada and the u.s..