S&P rated MTB Money Market Fund AAAm. S&P's MTB release says, "The MTB Money Market Fund commenced operations in June 1988 and currently has approximately $2.6 billion in assets. In addition to the MTB Money Market Fund, we maintain 'AAAm' ratings on MTB U.S. Treasury Money Market Fund, MTB U.S. Government Money Market Fund, and MTB Prime Money Market Fund. The fund's investment advisor is MTB Investment Advisors Inc. (MTBIA). MTBIA began managing assets as a registered investment advisor in 1995 and adopted its current name following a reorganization with M&T Bank in 2003."