electroCore Inc. Common Stock. Replay the stock market charts of ECOR day by day, back to 2003. Open long and short positions without spending any money. electroCore, Inc., a commercial stage medical device company, engages in the development and commercialization of a range of non-invasive vagus nerve stimulation (nVNS) therapies. The company is developing gammaCore, a prescription-only nVNS therapy for the acute treatment of pain associated with migraine and episodic cluster headache in adults. Its lead product is gammaCore Sapphire, a rechargeable and reloadable handheld device for regular or intermittent use over many years. The company was incorporated in 2005 and is headquartered in Rockaway, New Jersey.