Aetna

Rite Aid Corp. shares sank after the drugstore operator’s proposed merger with Albertsons Cos. was called off, leaving the company with dwindling options amid a rapid transformation of the pharmacy business.

KKR is buying Envision Healthcare, as the industry ramps with M&A activity from both strategic and PE buyers.

Key responsibilities: Invests and manages debt and equity investments; manages the firm’s Midwest office.

American Woodmark buys RSI Home Products; CVS proposes a deal to buy Aetna; and UnitedHealth adds Davita Medical.

The deal comes on the heals of the proposed CVS-Aetna merger.

The proposed deal comes just after regulators sued to block the AT&T-Time Warner merger.