Stocks making the biggest moves midday: Logitech, Toyota, UnitedHealth, AMD and more

cnbc.com:

Check out the companies making headlines in midday trading.

Logitech — Shares tumbled 12.3% after the company announced president and CEO Bracken Darrell is departing. Citi downgraded shares to neutral from buy following the announcement.

UnitedHealth — UnitedHealth dropped 7% after Chief Financial Officer John Franklin Rex said more seniors are getting medical procedures they delayed during the Covid-19 pandemic, according to a FactSet transcript of a presentation made Tuesday at the Goldman Sachs Annual Global Healthcare Conference. It's a trend that means rising costs for the health insurance company. Other insurers also dropped, such as Humana, which slid 13%.

Toyota — The Japan-based automaker's shares gained 4.5% Wednesday. Shareholders reelected chairman Akio Toyoda in an endorsement of the company's governance and new electric vehicle strategy. Toyota announced earlier in the week it would introduce a full lineup of battery electric vehicles with «next generation» batteries.

Lumen Technologies — The telecommunications stock gained 6% during midday trading Wednesday, adding to the 16% advance that was made Tuesday. On Monday, Lumen announced a new network interconnection ecosystem called ExaSwitch that was created in partnership with Google and Microsoft.

Maxeon Solar Technologies — The solar stock gained 5.6%. Roth MKM upgraded shares from buy to neural, noting strong demand and the potential for margin expansion ahead. Earlier in the week, the company announced a new partnership with electric vehicle software charging company ev.energy.

Advanced Micro Devices — The chip stock gained nearly 2% in midday trading, a day after the company announced its latest artificial intelligence chips. On Wednesday, Reuters