Bill Ackman acquired 356 Thousand BlackRock Institutional Trust Company N.A. - iShares U.S. Real Estate ETF shares worth $34 Million. That's 0.28% of their equity portfolio (10th largest holding). The investor owns 1.36% of the outstanding BlackRock Institutional Trust Company N.A. - iShares U.S. Real Estate ETF stock. Bill Ackman acquired their 356 Thousand shares in Q2 2007. So far they never sold any shares in the company. The stake costed the investor $29.8 Million, netting the investor a gain of 14% so far.