Although headed by Joe Adonis, the gangs day-to-day operations were handled by Charles "Lucky" Luciano and Frank Costello as well as financially backed by Arnold Rothstein.
As Luciano and Lansky had previously worked together prior to Prohibition, Meyer and Siegel were made partners in the Judeo-Italian criminal organization.
[1] Even its lesser quality alcohol imported from Philadelphia mobster Waxey Gordon was considered far superior to the rotgut liquor supplied by the rest of New York's underworld.
At the suggestion of Rothstein, the Broadway Mob bought interests in several popular speakeasies and nightclubs which would lead to purchasing valuable real estate in Manhattan.
Its operations were eventually absorbed into the criminal syndicate under Luciano and Lansky, following the repeal of Prohibition in 1933.