Whittier Trust Co. Reduces Prologis Holdings Amid Market Volatility Whittier Trust Co. decreased its stake in Prologis, Inc. by 6.1% during the fourth quarter, selling 2,780 shares. This reduction brought its holdings to 42,623 shares, valued at $4.51 million. Institutional investors continue to adjust their positions in the industrial REIT, reflecting mixed market sentiment and analyst views.123