Fort Pierce (Fla.) Retirement Trust Fund hired Emerald Asset Management to run $6 million in active domestic small-cap growth equities, said George Bergalis, city finance director. John McStay Investment Counsel had run the money in its Accel small-cap growth mutual fund, which closed last December; the $175 million plan then moved the money to McStay's Brazos Small-Cap mutual fund, Mr. Bergalis said. John McStay was terminated because of performance concerns and was not allowed to rebid, he said. Callan Associates assisted. Howard Monaghan, John McStay spokesman, declined comment.