Montgomery Securities was created in 1978.
If you mean Montgomery Street Income Securities Inc. (MTS), according to Yahoo! Finance, Deutsche Investment Management Americas, Inc. is their investment advisor.
Guosen Securities was created in 1989.
Yamaichi Securities was created in 1897.
Patersons Securities was created in 1903.
Wedbush Securities was created in 1955.
Everbright Securities was created in 1995.
Prudential Securities was created in 1981.
Triad Securities was created in 1976.
Reynolds Securities was created in 1931.
Fullerton Securities was created in 2008.
Firstrade Securities was created in 1985.
Land Securities was created in 1944.