NEW YORK ( TheStreet ) -- Fannie Mae ( FNMA _ ) and Freddie Mac ( FMCC _ ) were again huge winners on Friday.

Shares of Fannie Mae were up 41% to close at $2.97, while Freddie Mac was also up 41% to close at $2.81, after Ralph Nader in an op-ed piece in the Wall Street Journal said the two companies' common shareholders should fight against the federal government's "great Fannie and Freddie rip-off.".

The two mortgage giants together are known as the government-sponsored enterprises, or GSEs, and were taken under government conservatorship in September 2008.