S&P 500 Movers: CSCO, SNPS (5/19, 10:58 AM ET) -- In early trading on Thursday, shares of Synopsys topped the list of the day's best performing components of the S&P 500 index, trading up 6.2%. Year to date, Synopsys has lost about 21.4% of its value.

And the worst performing S&P 500 component thus far on the day is Cisco Systems, trading down 14.3%. Cisco Systems is lower by about 34.6% looking at the year to date performance.

Two other components making moves today are Under Armour, trading down 9.4%, and Live Nation Entertainment, trading up 5.4% on the day.

For MarketNewsVideo.com, I'm Sayoko Murase.