Nasdaq 100 Movers: PDD, BIIB (9/23, 10:24 AM ET) -- In early trading on Thursday, shares of Biogen (BIIB) topped the list of the day's best performing components of the Nasdaq 100 index, trading up 3.1%. Year to date, Biogen registers a 21.9% gain.

And the worst performing Nasdaq 100 component thus far on the day is Pinduoduo (PDD), trading down 1.2%. Pinduoduo is lower by about 45.7% looking at the year to date performance.

Two other components making moves today are Okta (OKTA), trading down 1.0%, and Moderna (MRNA), trading up 2.8% on the day.

For MarketNewsVideo.com, I'm Sayoko Murase.