DaVita, AMD, 3M, Acacia Communications and more

Discover the companies that make the news in the midday:

DaVita – Shares of the health care and dialysis company DaVita have climbed 7%, after a report from Politico announced that the Trump administration will announce this week its initiatives to integrate more treatments kidney at home, as opposed to clinics. The report says the administration wants to reorganize a market in which the federal government spends $ 100 billion a year.

Advanced Micro Devices – AMD chip maker shares rose 2% after Nomura raised its stock price target from $ 33 to US $ 37 due to optimism over the news AMD Ryzen office processing units. According to analyst David Wong, the new units will help AMD maintain its market share of desktop processors and could bring unit market share to 20% by December 2019.

Acacia Communications – Acacia Communications shares climbed more than 35% after Cisco announced plans to acquire Acacia for $ 70 per share in cash in a $ 2.6 billion transaction fully diluted base. The transaction is expected to close in the second half of the 2020 Cisco exercise.

3M – 3M manufacturing company's shares fell by more than 2% after RBC Capital Markets degraded the stock to make it better than the sector. "After a series of scary guiding cuts, 3M 's reputation as a defensive and high – quality industry is eroding," wrote the analyst.

Merck & Co. – Merck shares rose more than 1% after the company said the Food and Drug Administration had accepted its license applications to update the dosage of its drug KEYTRUDA, which helps the body's immune system to detect and fight tumor cells.

Square – Shares of the Square mobile payment platform grew more than 5% after Raymond James improved its stock market performance from underperformance to the markets, saying the risk / return ratio of the company's equity markets was up. business was now more "balanced". Square's shares have increased by almost 40% since the beginning of the year.

Six Flags- Six Flags rose more than 1% after Wells Fargo upgraded the recreational park operator to outperform the market. Wells Fargo cited the improvement of weather conditions and the reduction of the impact of the trade war in China.

Marriott International- Marriott International dropped more than 1% after JP Morgan downgraded the overweight hotel operator to a neutral position, citing "recent equity performance, maximum valuation" and "slowing trends sector ".

– Marc Rod from CNBC and Mallika Mitra contributed to this report.