Obesity drugmaker Novo Nordisk raised its full-year outlook for the third time this year on Wednesday ​as its Wegovy pill beat third-quarter sales forecasts, boosting the Danish firm's bid to win back ground from US rival ‌Eli Lilly. Shares jumped 5.65% in premarket trading.

Arista Networks climbed about 10% in premarket trading. Arista Networks nearly doubled its profit and reported 59% revenue growth in the third quarter, citing continued strong demand for the company's artificial-intelligence data-center products.

The network infrastructure company on Tuesday reported a profit of $1.56 billion, or $1.22 a share, in the quarter ended Sept. 30. That compares with a profit of $853 million, or 67 cents a share, a year earlier.

Super Micro Computer forecast second-quarter revenue above Wall Street estimates on ​Tuesday as strong demand for its AI-optimized servers boosted ‌sales, sending the company's shares up more than 6% in premarket trading.