Putnam President and CEO Robert L. Reynolds has replaced the managers of three funds to further bolster investment performance.

Effective immediately, Robert Brookby, currently the manager of the Putnam Growth Opportunities Fund, is taking on the added responsibility of the Putnam New Opportunities and the Putnam Vista funds. In addition, Pam Gao has been appointed manager of the Putnam Small Cap Growth Fund.

Brookby has been with Putnam for the past three years, and has more than a decade of experience. He was previously with American Century. Gao has been with Putnam since 2000 and has been one of the portfolio managers in the small-cap equity group. She has more than 11 years of experience in the investment industry.

“While we are pleased with the direction of our investment division and the overall results produced for investors in the last year, we are continuously looking at how to optimize our talent and resources to deliver upon the trust placed in Putnam by clients and investors,” Reynolds said.

Institutional Investor recently named Putnam “Mutual Fund Manager of the Year.” In February, Putnam was ranked No. 1 in Lipper/Barron’s Best Mutual Fund Families.

Brookby and Gao replace Gerald Moore, who ran New Opportunities, Ray Hadded, who ran Vista, and Anthony Sutton, who was managed of Small Cap Growth. The three are no longer with Putnam.