Facebook, iRobot and FuelCell Energy are big market movers

NEW YORK, N.Y. – Stocks that moved substantially or traded heavily Tuesday on the New York Stock Exchange and the Nasdaq Stock Market:


KKR Financial Holdings LLC, up $2.89 at $12.34

Global investment firm Kohlberg Kravis Roberts & Co. L.P. plans to acquire the specialty finance firm in a $2.6 billion deal.

NL Industries Inc., down 49 cents at $10.17

A judge ordered three companies, including NL Industries, to pay to remove lead paint from millions of older homes in California.


Facebook Inc., up $1.05 at $54.86

The social network said it is testing video ads that show up in its users’ news feeds, creating another potential source of revenue.

iRobot Corp., up $5.41 at $36.71

A Raymond James analyst raised his investment rating on the stock, saying that its new robotic floor cleaners will boost sales.

Frontier Communications Corp., up 38 cents at $4.78

AT&T Inc. has agreed to sell its Connecticut wireline operations to the communications company for $2 billion.

Magellan Health Services Inc., down $2.83 at $56.97

The manager of radiology and pharmacy benefits issued a 2014 earnings forecast that fell well below Wall Street expectations.

Targacept Inc., down $2.04 at $3.91

The drug developer said it will stop work on an experimental drug that failed in a mid-stage study of schizophrenia patients.

FuelCell Energy Inc., down 45 cents at $1.41

The fuel cell power plant maker reported a fiscal fourth-quarter loss that was bigger than its loss in the third quarter.