In early trading on Monday, shares of CoStar Group topped the list of the day's best performing components of the Nasdaq 100 index, trading up 1.1%. Year to date, CoStar Group registers a 2.6% gain.

In early trading on Thursday, shares of DexCom (DXCM) topped the list of the day's best performing components of the Nasdaq 100 index, trading up 6.9%. Year to date, DexCom has lost about 8.1% of ...

The Dow Jones Industrial Average narrowed its losses while the Nasdaq Composite flipped higher Monday afternoon in wildly volatile trading, as investors closely monitor any developments on ...

In the first 30 minutes of trading the Dow Jones, S&P and NASDAQ each slipped over 3.5%, with the NASDAQ leading the plunge with an over 4.5% loss − according to data from Yahoo Finance.