Weight Watchers International Inc. shares rose as much as 7.6 percent after investor and spokeswoman Oprah Winfrey said she’s lost more weight using the program.

“I lost 26 pounds, and I have eaten bread every single day,” Winfrey said in a video posted to Twitter.

The shares climbed as high as $11.97 after the video was released, continuing a trend of Weight Watchers’ stock rising when Winfrey’s weight goes down. It also climbed in October after she said on the Ellen DeGeneres show that she’d lost 15 pounds (6.8 kilograms).

Investors are betting that Winfrey can help turn around the company, which has struggled to compete with fitness apps and other programs in recent years. Winfrey, 61, announced her partnership with Weight Watchers in October, saying she would buy 10 percent of the stock and join the board. In late October, she reported that the stake was almost 15 percent, including options.

Oprah began appearing in ads endorsing Weight Watchers in December. The latest clip, which she posted with the tweet “Eat bread. Lose weight. Whaaatttt?” focused on her love of bread.

“This is the joy for me,” Winfrey said. “I don’t deny myself bread. I have bread everyday.”