NEW YORK ( TheStreet) -- ATS Medical ( ATSI) was rallying more than 50% on a buyout offer, making it one of several under-$10 stocks moving on above-average volume during Thursday's session.

ATS Medical will be acquired by fellow medical device maker Medtronic ( MDT - Get Report) for $4 per share in cash. The deal is valued at $370 million, including the assumption of debt

ATS Medical shares were up $1.37, or 52.9%, to $3.96. Volume topped 22.44 million shares, compared to the 50-day average daily share volume of 246,000, according to the Nasdaq.

Elsewhere, Eastman Kodak ( EK) dropped by $1.09, or 13.1%, to $7.26 after the company posted a first-quarter adjusted profit of 82 cents a share, which fell short of the Thomson Reuters average estimate of 90 cents a share. Volume topped 15.31 million shares, compared to the three-month average daily share volume of 11.2 million, according to Yahoo! Finance.

RAIT Financial Trust ( RAS) jumped by 68 cents, or 21.6%, to $3.83 after the company swung to a first-quarter profit of 41 cents a share from a year-ago loss of $2.19 a share. A single analyst had forecasted a loss of 30 cents in the quarter, according to Thomson Reuters. Volume topped 6.31 million shares, compared to the three-month average daily share volume of 2.65 million.

iStar Financial ( SFI) rallied by 87 cents, or 15.3%, to $6.57 after the commercial real estate lender reported an adjusted first-quarter loss of 26 cents a share, which was narrower than the $1.48-a-share loss analysts were predicting. Volume topped 3.94 million shares, compared to the three-month average daily volume of 1.88 million.

-- Written by Robert Holmes in Boston.

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