NEW YORK -- Stocks that traded heavily or had substantial price changes on Wednesday:

       Advanced Micro Devices Inc., up $2.80 to $127.33.

       The chipmaker announced a line of artificial intelligence chips.

       UnitedHealth Group Inc., down $31.45 to $459.86.

       The insurer said it expects pent-up demand for surgeries to increase costs.

       Anterix Inc., up $2 to $34.95.

       The wireless communications company reported strong fiscal fourth-quarter earnings.

       Logitech International S.A., down $7.09 to $56.81.

       CEO Bracken Darrell resigned from the maker of keyboards, webcams and other computer peripherals.

       Sonos Inc., down 59 cents to $15.70.

       The audio products maker is cutting 7% of its workforce.

       Plug Power Inc., down 22 cents to $10.69.

       The fuel cell maker gave investors a financial and production update.

       Toyota Motor Corp., up $7.49 to $165.57.

       The automaker's shareholders endorsed Akio Toyoda’s reappointment as chairman.

       Vodafone Group, up 10 cents to $9.24.

       The wireless carrier agreed to merge with Three U.K. to capitalize on the rollout of next-generation 5G wireless technology in the U.K.