Investing.com -- Integer Holdings (NYSE:ITGR) shares surged 21% Friday afternoon following a Wall Street Journal report that private-equity firm KKR is near a deal to take the medical-device outsourcing company private. Trading in the stock was briefly halted due to volatility following the report. Integer Holdings specializes in medical device outsourcing services. The potential acquisition would represent KKR's latest move into the healthcare sector through a take-private transaction. Related articlesInteger Holdings stock surges 21% on KKR takeover reportGavin Newsom steps in as unlikely ally for Warner Bros.