Price: $45.44 Day’s high: $48.00 Low: $42.62 Dexcom
Abbott Laboratories’ FreeStyle Libre Flash was approved by FDA, sending the medical device company’s shares to September’s low. Dexcom’s revenue comes from its blood glucose monitoring system, and Abbott’s device doesn’t require blood samples.
Price: $23.50 Day’s high: $23.50 Low: $15.75 Roku
The video streaming company’s shares jumped in its debut at the top end of the marketed range. The stock was intially priced for $12 to $14 a share. Roku makes devices and software that allow users to stream video from Netflix, Amazon and others.
Price: $10.47 Day’s high: $10.83 Low: $9.78 BlackBerry
The mobile communications company reported record software revenue and beat analysts’ estimates. BlackBerry has spent years replacing its phone business with software. Investors cheered, and shares jumped the most since April.