Carta Holdings, Inc. engages in the business of online commerce, media, advertising, research, and mobile services. It operates through the following segments: Partner Sales, Ad Platform, and Consumer. The Partner Sales segment offers solutions and advertising products centered on media communications. The Ad Platform segment includes ad distribution platforms such as fluct, Zucks, Porto, and Telecy. The Consumer segment includes the planning and operation of in-house media, new businesses, and investments. The company was founded by Shinsuke Usami on October 8, 1999 and is headquartered in Tokyo, Japan.