In early trading on Wednesday, shares of CDW topped the list of the day's best performing components of the Nasdaq 100 index, trading up 5.7%. Year to date, CDW registers a 21.0% gain. And the ...

In early trading on Monday, shares of Idexx Laboratories, topped the list of the day's best performing components of the Nasdaq 100 index, trading up 10.3%. Year to date, Idexx Laboratories ...

In early trading on Tuesday, shares of Palantir Technologies topped the list of the day's best performing components of the Nasdaq 100 index, trading up 24.7%. Year to date, Palantir Technologies ...

In early trading on Thursday, shares of AstraZeneca topped the list of the day's best performing components of the Nasdaq 100 index, trading up 4.4%. Year to date, AstraZeneca registers a 13.0% gain.

In early trading on Wednesday, shares of T-Mobile topped the list of the day's best performing components of the Nasdaq 100 index, trading up 6.8%. Year to date, T-Mobile registers a 6.9% gain.

In early trading on Friday, shares of Atlassian topped the list of the day's best performing components of the Nasdaq 100 index, trading up 18.0%. Year to date, Atlassian registers a 29.4% gain.

Although most stocks made forward progress in January, a few of them bucked the bigger trend for understandable reasons.

In early trading on Thursday, shares of Roper Technologies topped the list of the day's best performing components of the Nasdaq 100 index, trading up 6.0%. Year to date, Roper Technologies ...

The Invesco QQQ Trust ( QQQ -1.26%) tracks the Nasdaq-100, and it's a popular exchange-traded fund (ETF) for many ...

The Nasdaq-100 should not be confused with the Nasdaq Composite® Index. The Nasdaq Composite Index represents every company ...

But that wasn't the case for all of them. While the Nasdaq-100 index advanced 2.2% in January, a handful of its constituents (including a market favorite) lost quite a bit of ground. Here they are ...