It has been about a month since the last earnings report for DexCom (DXCM). Shares have lost about 7% in that time frame, underperforming the S&P 500. But investors have to be wondering, will the ...

DexCom's DXCM shares have risen 6.9% since Tuesday last week, while yesterday’s after-market movement took the rally to nearly 8%. Last week, the company presented a positive picture for its ...