 Whittier Trust Co. of Nevada Inc. increased its holdings in Otter Tail Co. NASDAQ:OTTR by 26.3 in the 2nd quarter, HoldingsChannel reports. The institutional investor owned 16,067 shares of the utilities providers stock after buying an additional 3,344 shares during the period. Whittier Trust Co. of Nevada Inc.s holdings in Otter Tail were worth 623,000 ... 