Columbia Threadneedle Investments is an American asset management firm. It is a subsidiary of Ameriprise Financial and operates as its asset management arm.
Background
Columbia Threadneedle was formed in 2015 as the result of a merger between Columbia Management Group (an investment advisor and sponsor of mutual funds) and Threadneedle Asset Management (a non-US focused asset management firm based in the United Kingdom). Columbia Management Group and Threadneedle Asset Management were subsidiaries of Ameriprise Financial which were acquired in 2010 and 2003 respectively. Columbia Management was the asset management business of Bank of America.[1][2][3]