GNC Slumps After CEO Steps Down Amid Struggling Sales

  • Nutrition retailer suspends full-year financial guidance
  • Michael Archbold replaced by Robert Moran as interim CEO

GNC Holdings Inc., a vitamin and supplement retailer, sank after Chief Executive Officer Michael Archbold resigned and stepped down from the board of directors. Former PetSmart CEO Robert Moran replaced him on an interim basis.

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