Many companies featured on Money advertise with us. Opinions are our own, but compensation and
in-depth research may determine where and how companies appear. Learn more about how we make money.

Money is not a client of any investment adviser featured on this page. The information provided on this page is for educational purposes only and is not intended as investment advice. Money does not offer advisory services.

Noah Berger—AP

Even the people behind the world's largest professional network have bad days at work, and today might be one of them: LinkedIn stock dropped 45% in one day.

What happened? Yesterday, the company told investors that projected first quarter revenue is $820 million. But the Wall Street Journal reports that investors had expected first quarter revenue to reach $867 million. LinkedIn further projected that it would bring in $3.6 to $3.65 billion in revenue for all of 2016, far short of Wall Street's expectation that the company would see $3.91 billion in revenue.

[findthebest id="ekvj7NrLMBn" title="LinkedIn Corporation (LNKD) Stock Price" width="600" height="634" url="https://sw.graphiq.com/w/ekvj7NrLMBn" link="http://listings.findthecompany.com/l/11340499/Linkedin-Corporation-in-Mountain-View-CA" link_text="LinkedIn Corporation (LNKD) Stock Price | FindTheCompany"]

The selloff is LinkedIn's largest ever one-day loss, the WSJ says. As of 2:41 pm, the stock is selling for $105.15 a share, down from $201.65 this morning and $276.18 in February of last year.