Tandem Diabetes (TNDM) is gaining from continued product innovations. Yet, ongoing macroeconomic challenges and tough competition pose challenges. The stock carries a Zacks Rank #3 (Hold) currently.Factors Driving TNDM StockTandem Diabetes seeks to grow its business through the acquisition of products or technologies or investments in businesses. Last year, it acquired Swiss-based AMF Medical SA — the developer of the Sigi Patch Pump. The company’s speed-to-market with Continuous Glucose Monitoring (CGM) in ...