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Containerboard estimates raised at Goldman

Goldman's checks indicate containerboard producers successfully realized the April $50/ton linerboard price hike. As a result, the firm raised Boise (BZ), Packaging Corp. (PKG), International Paper (IP), and Rock-Tenn (RKT). The firm reiterated its Buy rating on Rock-Tenn given leverage to higher containerboard rides, potential buybacks, and free cash flow profile.