An Evening With Oprah - Sydney
Oprah Winfrey is seen on stage during her 'An Evening With Oprah' tour at Allphones Arena on December 12, 2015 in Sydney, Australia. Don Arnold—WireImage

This Chart Proves Oprah Is the Best Thing to Ever Happen to Weight Watchers

Not many people can move markets with a single tweet. Oprah Winfrey is one of them.

The TV star-turned-media mogul tweeted a video Tuesday in which she said she lost 26 pounds thanks to Weight Watchers. The weight loss firm's stock skyrocketed, ending the day up 20% at $13.29 a share. (Things have since cooled slightly).

That was great news for Weight Watchers' investors. Among those stockholders? Winfrey herself. She owns 6.4 million shares of the company, meaning she effectively tweeted her way to becoming $12.5 million richer in just a few hours.

As it turns out, Tuesday wasn't the only time Weight Watchers has received the Oprah bump. The company's stock, which was long stuck in the duldrums, shot up over 100% in October when it announced that Winfrey took a 10% stake. A second rise came a month later, when Weight Watchers said the media mogul would appear in a new series of commercials for the company. And once those commericals were out? You guessed it: Yet another boost.

Check out the Oprah bump in this interactive:

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