What does SGY stand for?

Skagway - Alaska - Airport symbol (OAG)

Skagway Air Service, Inc. - ICAO designator (FAAC)

Skagway, AK - Location identifier - FAA (FAAL)

Sooner Energy Corp. - Vancouver Stock Exchange symbol

Stenography - Telegraphy (PCTE)

Stone Energy - NYSE symbol

Stone Energy Corp. - NYSE symbol (SPSG)