Spiros "Sig" Segalas is one of the founders of Jennison Associates. In addition to managing institutional portfolios, he has managed the Harbor Capital Appreciation Fund since May 1990. He is also co-manager of the Prudential Jennison Blend Fund, Prudential Jennison Growth Fund, Prudential Jennison 20/20 Focus Fund, and the Prudential Jennison Select Growth Fund. Sig and his Large Cap Growth team have received numerous industry accolades over the years. Sig began his investment career as a research analyst with Bankers Trust Company in 1960 and was responsible for technology, aerospace, and conglomerate securities. In 1963, he was appointed group head of the technology group; in 1967, he was asked to manage a newly introduced commingled emerging growth fund, The Supplemental Equity Fund, for the bank's institutional clients. He was also appointed to the bank's investment policy group. Sig received a BA from Princeton University, after which he served as an officer in the US Navy. He also spent some time in the shipping and construction industries before joining Bankers Trust.

Blair A. Boyer is a managing director and a large cap growth equity portfolio manager. He joined Jennison Associates in March 1993. Prior to joining the Growth Equity team in 2003, Blair co-managed international equity portfolios for 10 years. During his tenure as an international equity portfolio manager, he managed the Jennison International Growth Fund from its inception in March 2000. Blair managed international equity portfolios at Bleichroeder from 1989 to 1993. Prior to that, he was a research analyst and then a senior portfolio manager in the Verus Capital division at Bleichroeder beginning in 1983. He received a BA in economics from Bucknell University and an MBA in finance from New York University.

Mammen is a portfolio manager in Global Equity Portfolio Management and leader of the firm’s Disciplined Equity Team. He manages equity assets on the behalf of our clients, drawing on research from Wellington Management’s global industry analysts, equity portfolio managers, and team analysts. He currently manages equity strategies that emphasize improving quality metrics, business momentum, and attractive relative valuations. He works in our Boston office. Prior to joining Wellington Management in 1994, Mammen worked for the Gas Authority of India Limited, New Delhi, India (1989 – 1992).

Michael Del Balso is a managing director, the director of research for growth equity, and a large cap growth equity portfolio manager. He joined Jennison Associates in May 1972 as a research analyst. He has been director of research for growth equity since 1994 and became a portfolio manager in 1999. Michael came to Jennison after four years with White, Weld & Company, where he was a vice president, stockholder and followed growth companies with emphasis on the consumer area. He received a BS in industrial administration from Yale University and an MBA from Columbia University.