Intelsat S.A., the world's largest provider of satellite services backed by BC Partners and Silver Lake, raised $348 million by offering 19.3 million shares at $18, below the range of $21 to $25. The company had originally filed to offer 21.7 million shares. Intelsat S.A. plans to list on the NYSE under the symbol "I". Goldman Sachs, J.P. Morgan, Morgan Stanley and BofA Merrill Lynch acted as lead managers on the deal, which is the 14th private equity-backed IPO year-to-date.