Fresh off acquiring one of the largest industrial portfolios in history, Blackstone has turned around and sold a piece of it. Blackstone unloaded a 100-building portfolio valued at $3 billion to Nuveen, the real estate investment arm of the Teachers Insurance and Annuity Association of America, Nuveen announced Monday. Eastdil Secured advised Blackstone on the deal. The breakdown of the deal was not immediately clear and neither was its acquisition price. Nuveen said the portfolio.