Quantum Foundation, West Palm Beach, Fla., hired Montag & Caldwell as an additional manager running an active large-cap growth portfolio and Reams Asset Management as a domestic fixed-income manager. The hirings followed an asset allocation review performed by consultant BT Alex. Brown, said Jeannette Corbett, president of the $160 million foundation. The asset mix remains at 75% stocks and 25% bonds, but allocations to small-cap and emerging markets stocks and global bonds were dropped. She would not disclose the exact amount each firm is managing or the manager Reams is replacing.