FIDELITY ADVISOR SERIES IIADV BLNCD FD MUTUAL FUNDS USMF - What does FIDELITY ADVISOR SERIES IIADV BLNCD FD MUTUAL FUNDS USMF mean? - What does FIDELITY ADVISOR SERIES IIADV BLNCD FD MUTUAL FUNDS USMF stand for? - FIDELITY ADVISOR SERIES IIADV BLNCD FD MUTUAL FUNDS USMF meaning