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Tweets Moving Stocks

You never know for sure what moves a stock, but increasingly social media, especially Twitter and its cousin, Stocktwits, is playing a bigger role in daily market moves.

The most recent: J.C. Penney .

Its stock started popping at around 1:57 p.m. ET today, shooting up as much as nine percent on no apparent news.

Then I checked my twitter feed and saw this from @markflowchatter, who generally has good radar:

JCP spiked at 2pm when fashion expert Nina Garcia mentioned she met w Ron Johnson at JCP HQ and is calling the new prototype a "gamechanger"

And then there it was, 49 minutes earlier, in a Twitter verified tweet:

@ninagarcia: I'm @jcpenney's HQ. Thank you Ron Johnson for the walk through of JCP's prototype. Get ready to shop! Its going to be a game changer!

Never mind that Penney announced a week ago that it had partnered with the Project Runway judge to become its “resident Style Voice and fashion collection curator.”

I went on air with Brian Sullivan on "Street Signs," and in an otherwise J.C. Penney news vacuum, cited the tweet.

Among the tweets that followed:

@firstadopter: Umm Nina Garcia might be a little biased since $JCP IS PAYING HER! @markflowchatter @herbgreenberg

@SullyCNBC: Keep in mind $JCP: Garcia partnered w/co last week and it may NOT be her tweets moving stock but timing seems it

@sapnam: seen spike in $JCP attributed to Nina Garcia tweet... even tho she RTed her appt as style voice/fashion curator on July 18...odd.#retail

?@RetailRobWilson @herbgreenberg That simplistic thinking re: $JCP what makes shorting retail stock so alluring. #GoodGrief

He followed that quickly with:

@herbgreenberg Herb, only rookies look at a gleaming prototype and get excited. There's still a sign on the door that says "JCP" $JCP

As the tweets continued, and we discussed it on air, the stock started to fall back.

Like it or not—social media strikes again.

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Disclaimer

  • Patti Domm

    Patti Domm is CNBC Executive Editor, News, responsible for news coverage of the markets and economy.

  • A CNBC reporter since 1990, Bob Pisani covers Wall Street from the floor of the New York Stock Exchange.

  • CNBC Personal Finance Correspondent

  • JeeYeon Park is a writer for CNBC.com. Follow her on Twitter: @JeeYeonParkCNBC

  • Rick Santelli joined CNBC Business News as an on-air editor in 1999, reporting live from the floor of the Chicago Board of Trade.

  • Senior Producer at CNBC's Breaking News Desk.