NEW YORK (AP) -- Stocks that moved substantially or traded heavily Monday on the New York Stock Exchange and the Nasdaq Stock Market:
Transocean Ltd., up $1.92 to $55.37
The oil driller ended a monthslong proxy fight with Carl Icahn, agreeing to a $3 per-share dividend and a smaller board.
Michael Kors Holdings Ltd., up $1.70 to $81.10
The high-end women's apparel and accessories maker joins the S&P 500 index after trading Tuesday, replacing NYSE Euronext.
Best Buy Co. Inc., up $1.92 to $44.33
UBS upgraded the stock and Jefferies hiked its price target after the electronics store shifted to better compete with online rivals.
Twitter Inc., up $1.25 to $42.90
After a 73 percent spike in share price during its initial public offering, the social media site appears to be stabilizing.
ViroPharma Inc., up $10.04 to $49.42
Shire PLC is spending $4.2 billion to acquire the biopharmaceutical company as it broadens its own rare disease treatment portfolio.
Rocket Fuel Inc., up $7.18 to $45.04
BMO Capital, citing a recent sell-off of shares cross the sector, upgraded the artificial-intelligence digital advertiser.
Zalicus Inc., down $3.39 to $1.30
The biopharmaceutical company ended its development program for a drug candidate that was intended to treat chronic pain.
CDW Corp., down $1.23 to $21.72
The information technology provider announced the start of a 15 million stock offering.