Stocks that moved substantially or traded heavily Friday on the New York Stock Exchange and Nasdaq Stock Market:
Citigroup Inc., down 14 cents at $4.54
A Bank of America analyst cut the bank's investment rating, saying Middle East turmoil was denting customers' demand for banking services.
Monster Worldwide Inc., down $1.09 at $15.90
William Blair downgraded the staffing company, saying weak government hiring and competition from other sites threaten revenue growth.
Cooper Cos., up $6.48 at $70.10
The maker of contact lenses raised its annual profit and revenue forecasts after profit more than doubled in its most recent quarter.
Madison Square Garden Inc., down $1.61 at $28.10
The owner of the New York Knicks said quarterly profit rose 40 percent, but construction on the arena would cost more and hurt entertainment revenue.
Agilent Technologies Inc., up $3.93 at $46.75
A Barclays analyst said investors were underestimating the tool maker's earnings potential from its new operating model.
Orbital Sciences Corp., down 30 cents at $18.17
The company's Taurus rocket failed to deliver a NASA satellite to space, and NASA could change launch vehicles after a review.
Marvell Technology Group Ltd., down $2.09 at $16.13
The chip maker posted earnings and revenue that missed expectations, and it expects bigger revenue declines in its mobile and storage units.
Cerus Corp., down 46 cents at $2.90
The biotechnology company said it expects slower sales growth of its Intercept Blood System in 2011 because of the weak economy.