GNC, which previously had 8,800 stores in the U.S., filed for bankruptcy in June. and said it would close roughly 800 of its remaining 1,200 stores. The Vitamin Shoppe, which went public in 2009 at a roughly $470 million valuation, was resold and taken private last year at valuation of $208 million. The last time the Vitamin Shoppe reported earning... See more