Ackman said that the stock prices of "two houses" are ridiculously cheap. Both of them rose more than 30% today.

Sina Finance news on March 30th, the common stock of American mortgage financing giants Fannie Mae and Freddie Mac rose more than 30% in Monday's trading. Fannie Mae rose 33% at one point, and Freddie Mac rose 32% at one point, both the largest increase since May 2025. Over the weekend, Bill Ackman said on social media, "Fannie Mae and Freddie Mac are ridiculously cheap, this is a typical asymmetric opportunity. They could increase tenfold, and it could happen quickly." He also said, "Some of the highest quality companies in the world are trading at extremely low prices, now is one of the best times in a long time to buy quality assets." However, despite the big gains on Monday, these two stocks are still down about 60% from their mid-September highs, as market optimism about the Trump administration's plans to release them from government control has cooled.