Massachusetts Water Resources Authority Retirement System, Chelsea, rehired M&T Bank as custodian.
The $641 million pension fund's board approved the hiring at its Oct. 26 meeting, recently released meeting minutes showed.
The pension fund issued an RFP in June due to the Massachusetts Public Employee Retirement Administration Commission's requirement that services be put up for bid every seven years, said Carolyn Russo, executive director, at time.
People's United Bank, which is now part of M&T Bank, was the original bank under contract.
Comerica and State Street were the other bidders.
Investment consultant NEPC assisted.
