Ken Fuller joined Pioneer Investment Management as a portfolio manager...

Ken Fuller joined Pioneer Investment Management as a portfolio manager and leader of the firm’s small-cap equity investment team. He will be lead manager for the $230 million Pioneer Small Company fund and the $88 million Pioneer Micro-Cap fund. He replaces Theresa Hamacher, chief investment officer, who led the small-cap team but was recently assigned additional executive duties, officials said. Mr. Fuller was a principal at Manley Fuller.