Intuitive Surgical – Shares of Intuitive Surgical rose 3.5% after Piper Sandler on Monday upgraded the medical stock to overweight from neutral. According to the firm, investors have an opportunity to gain entry into a top medtech company with the recent pullback.

Align Technology — Shares of the dental company popped more than 7% in midday trading after Morgan Stanley initiated coverageAlign Technology is considered overweight. According to the company, “ALGN has a strong position in the Dental market’s fastest-growing segment with clear aligners.” According to the bank, the target price of $575 per share was set for ALGN.

Kellogg — Shares of the food company ticked 2.8% lower in midday trading after BMO downgraded KelloggMarket perform is different from outperform. Wall Street said it expects cereal challenges to come up.

Enphase Energy — Enphase Energy shares surged 10% after the company, which makes microinverters and backup energy storage for solar systems, announced an expansion of battery storageMassachusetts

Citrix Systems — Citrix shares fell 3.7% after reports that the cloud-computing company will be taken private in an all-cash deal worth $16.5 billion, including debt. According to The Wall Street Journal, Vista Equity Partners is buying Citrix from an affiliate of Elliott Management for $104 per share.

BlackBerry – BlackBerry shares added 4.7% after the communications software company announcedA deal was reached to purchase its legacy patents at $600 million. These non-core patent assets comprise mobile devices, wireless networking and messaging. Catapult was created to acquire BlackBerry patents.

Otis Worldwide – Shares of the elevator company rose more than 2% after Otis reported 72 cents in earnings per share for the fourth quarter, four cents ahead of estimates, according to Refinitiv. Although the revenue estimate was not accurate, Otis said that they expect sales to rise and operating margins in 2022.

Walgreens – Walgreens shares dipped about 2% after Bloomberg reportedThe company started selling its Boots international pharmacy unit. Sycamore Partners and other buyout companies are also reportedly looking at bids.

— CNBC’s Yun Li, Tanaya Macheel, Margaret Fitzgerald and Jesse Pound contributed reporting