After two failed attempts to tap the public equity markets in 2004 and 2006, global nutritional supplement retailer GNC Holdings raised $360 million by offering 22.5 million shares at $16, the mid-point of its $15-$17 range, on Thursday evening. Of those shares, 6.5 million were sold by its private equity sponsors. Goldman Sachs, J.P. Morgan, Deutsche Bank and Morgan Stanley acted as joint book-running managers on the offering, and the retailer is expected to commence trading on the NYSE under the ticker symbol GNC on April 1st.