Castles in the Sky


Also found in: Idioms.

Castles in the Sky

Slang; a term describing an extremely overvalued security or market. The price rises because investors believe it will keep rising indefinitely. This continues right up to the moment that the price crashes. The term describes a market bubble.
References in periodicals archive ?
Laura is playing the wife of Robert Watson Watt in BBC drama Castles in the Sky.
CASTLES IN THE SKY (BBC One, Thursday, 9pm) THE previously untold story of the fight to invent radar by Scotsman Robert Watson Watt (Eddie Izzard, pictured) and a team of unproven and unknown British scientists.
CASTLES IN THE SKY Thur BBC2 9pm Welcome Prepare to be bowled over as the TV schedules are hit for six by a stunning selection of new shows.