Richard Pender has been named managing director of equities for the $11.5 billion endowment of the Howard Hughes Medical Institute, Chevy Chase, Md. He replaces Dan Szente, who left more than a year ago. Mr. Pender previously served as senior vice president and lead portfolio manager, running the flagship mutual fund at Sentinel Advisors. He will be replaced by Van Harissis, who had been a portfolio manager at Phoenix Investment Counsel. Mr. Pender also was CIO of Sentinels trust company, American Guaranty & Trust, where he has not yet been replaced.