Why were Weight Watchers and uranium mining stocks up today? - Marketplace.org

By Kai Ryssdal

December 22, 2016 | 6:24 PM

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 Oprah Winfrey speaks onstage at Hearst MagFront 2016 at Hearst Tower on Oct. 25 in New York City. - Ben Gabbe/Getty Images for Hearst

Today, we have a tale of two stock ticker symbols.

WTW: The shares for Weight Watchers International are up 5.3 percent today because company spokesperson and investor Oprah Winfrey revealed in a new ad this morning that she's lost 40 pounds.

URRE: The shares for the Uranium Resources Incorporated, a uranium mining company, ended the day 31 percent higher. It's a penny stock, so take that into account, but still. The proximate cause of the spike — and the chart it corresponds to the minute — was this tweet from Donald Trump:

The United States must greatly strengthen and expand its nuclear capability until such time as the world comes to its senses regarding nukes

— Donald J. Trump (@realDonaldTrump) December 22, 2016

Follow Kai Ryssdal at @kairyssdal.