AG Mortgage Investment Trust, Inc., an Angelo, Gordon-managed REIT planning to invest in residential mortgage assets, announced terms for its IPO on Tuesday. The New York, NY-based company plans to raise $300 million by offering 20 million shares at an estimated price of $15 per share. AG Mortgage Investment Trust, which previously filed with the SEC under the name Alexander Mortgage REIT, plans to list on the NYSE under the symbol MITT. BofA Merrill Lynch, J.P. Morgan and UBS Investment Bank are the lead underwriters on the deal.