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

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

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 ...

Try it Now The Nasdaq-100 in 100 video series provides insights into the Nasdaq-100 Index® and its constituents, all in 100 seconds or less. Sign up for our newsletter to get the latest on the ...

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 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.

The stock market is going through a historical cycle right now, and most investors aren’t aware of it, given the composition ...

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.

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 ...