James Mahnke
About
James Mahnke is from Lake Elmo, Minnesota, United States. In James's previous role as a CIO & Portfolio Manager at GAMMA Investment Management, James worked in Lake Elmo, MN until Dec 2025. Prior to joining GAMMA Investment Management, James was a SVP, Portfolio Manager at Security Bank & Trust and held the position of SVP, Portfolio Manager at Glencoe, MN. Prior to that, James was a Chief Investment Strategist, Portfolio Manager at Shield Plus, LLC, based in Lake Elmo, MN from Dec 2000 to Feb 2012. James started working as SVP, Portfolio Manager at Voya Financial in Minneapolis, MN in Oct 1995. From Jan 1987 to Jan 1995, James was VP, Portfolio Manager at AllianceBernstein, based in New York & Minneapolis. Prior to that, James was a Research Consultant at Farm Credit Services of America, based in St. Paul, MN from Jan 1986 to Jan 1986. James started working as Options & Futures Broker at Commodity Resource Corp. in Minneapolis, MN in Jan 1985.
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