Oprah Winfrey Loses $24 Million in One Day ... Thanks, Weight Watchers!

2/26/2016 10:55 AM PST BY TMZ STAFF
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022616-oprah-tmz-06Oprah Winfrey took a very unwanted bath after Weight Watchers stock took a huge hit. 

WW shares dropped a whopping 20 percent when the company reported a 21 percent drop in fourth-quarter net revenue -- which means O's bank account is about 24 million bucks lighter today.

Cry not for Oprah -- she's still reportedly cleared nearly $75 million since buying a 10-percent stake in the company and joining its board. The stock doubled the day her deal was announced ... but it's looking more like your typical yo-yo dieter now.

Not that we know anyone like that.