Robeco Institutional Asset Management B.V. lessened its stake in The Hanover Insurance Group, Inc. (NYSE:THG – Get Rating) by 9.4% during the 4th quarter, HoldingsChannel.com reports. The fund owned 47,394 shares of the insurance provider’s stock after selling 4,929 shares during the period. Robeco Institutional Asset Management B.V.’s holdings in The Hanover Insurance Group were […]