Whittier Trust Co. Expands Stake in Graco Inc. Whittier Trust Co. recently increased its holdings in Graco Inc. by 3.4%, adding 6,041 shares during the fourth quarter. This brings its total to 184,103 shares valued at $15.52 million. Institutional investors now own 93.88% of Graco's stock, reflecting substantial confidence in the industrial products company.12