Shares of Humana (HUM) are tumbling in Monday's trading session after The Cigna Group (CI) announced it is not pursuing a potential merger with the health insurance company. In contrast, Cigna stock is rallying on the news.

This follows a recent Bloomberg report suggesting the two insurers had rekindled merger discussions. However, Cigna stated it would only pursue deals that are "strategically aligned, financially attractive, [and] have a high probability to close."

Yahoo Finance Senior Health Reporter Anjalee Khemlani breaks down how this will impact the healthcare industry.

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This post was written by Angel Smith