A gainer is a person or organization who gains something from a particular situation.
Overall, there were more losers than gainers.
Brritain's insurers and oil and gas producers were the biggest gainers.
gainer in British English
(ˈɡeɪnə)
noun
1.
a person or thing that gains
2. Also called: full gainer
a type of dive in which the diver leaves the board facing forward and completes a full backward somersault to enter the water feet first with the back to the diving board
Compare half gainer
gainer in American English
(ˈgeɪnər)
noun
1.
a person or thing that gains
2.
a fancy dive in which the diver faces forward and does a backward somersault in the air
Examples of 'gainer' in a sentence
gainer
British banks were the biggest gainers on the index.
Times, Sunday Times (2011)
National chains specialising in quick money were the biggest gainers, led by stores offering cheque cashing and payday loans.
Times, Sunday Times (2013)
Otherwise, miners and defensive stocks were the main blue-chip gainers.
Times, Sunday Times (2008)
There is a danger that those areas already running successful intervention projects could be the main gainers, as they could get cash for work already under way.