Walt Mossberg reviews: Worth hundreds of millions?

Posted by: Stephen Baker on June 17

Just got this email:

“A new study from the University of Miami and USC that finds that, on average, a bad product review by The Wall Street Journal’s Walter Mossberg causes a firm’s stock price to fall 5% right after his column… while a good review causes the firm’s price to jump 10%. The study looked at product reviews involving more than 400 firms over a ten-year period. On average, firms with bad product reviews saw stock losses of $200 million, while those with positive reviews saw gains of $500 million.” The full study is to be released next month.

Update: Here’s the link. (Thanks J. Garfunkel)

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In Blogspotting Senior Writer Stephen Baker and Associate Editor Heather Green take a look at how cutting-edge technologies are changing business and society. Whether its blogs or wikis, data crunching or data targeting, technology’s advances are reshaping the world that we live in.

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