Inergy Midstream LP, an Inergy spin-off that owns natural gas midstream assets in NY and PA, raised $272 million by offering 16 million shares at $17, below the range of $19 to $21. Inergy Midstream LP plans to list on the NYSE under the symbol NRGM. Morgan Stanley, Barclays Capital, BofA Merrill Lynch, Credit Suisse, and Wells Fargo acted as lead managers on the deal.