What Happened?
Shares of medical device company DexCom (NASDAQ:DXCM) fell 7.4% in the morning session after a short-seller report from Hunterbrook Capital alleged issues with the company's G7 glucose monitoring device, questioned its accounting, and highlighted an executive exodus.
The report claimed that complaints about the G7 device led to the creation of a Facebook group that attracted over 58,000 members in just over a year. Hunterbrook asserted that some doctors stopped prescribing the G7 due to "disproportionate sensor inaccuracies, repeated device failures, connectivity issues, and problems with the adhesive." The short seller also raised flags about DexCom's accounting, suggesting the firm used aggressive tactics to surpass second-quarter earnings estimates. Adding to the pressure, the report noted the recent unexpected departure of its long-serving CEO, Kevin Sayer. Hunterbrook Capital confirmed it held a short position in DexCom shares.
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What Is The Market Telling Us
DexCom’s shares are somewhat volatile and have had 14 moves greater than 5% over the last year. In that context, today’s move indicates the market considers this news meaningful but not something that would fundamentally change its perception of the business.
The previous big move we wrote about was 4 days ago when the stock gained 0.4% on the news that the company announced it would present new product features and positive clinical data at the European Association for the Study of Diabetes (EASD) 2025 conference. The medical device maker planned to unveil its new "Smart Basal" module, an integrated system designed to make basal insulin management easier for users, currently under review by the FDA and for a CE mark. Additionally, Dexcom planned to present new data reinforcing that its continuous glucose monitor (CGM) use reduced acute diabetes events and neonatal complications linked to gestational diabetes more effectively than traditional fingersticks.
DexCom is down 12.1% since the beginning of the year, and at $69.01 per share, it is trading 24% below its 52-week high of $90.75 from February 2025. Investors who bought $1,000 worth of DexCom’s shares 5 years ago would now be looking at an investment worth $704.69.
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