Take a look at the top midday traders.

Peloton — Shares of the fitness company soared more than 32% after the firm announced it’s replacing its founder and CEO John FoleyThis will result in the elimination of 2,800 positions, which is about 20% of all corporate jobs. Barry McCarthy (ex-chief financial officer at Spotify and Netflix) will be the CEO and President of Peloton and join Peloton’s board. Peloton had already launched the rally. slashed its financial outlookThe full calendar year.

Harley-Davidson —The motorcycle maker’s surged 15% after the company reported a surprise profit of 14 cents per share for its most recent quarter thanks to increased demand for its more expensive motorcycle model. Analysts were expecting a loss in the region of 38 cents per shares. In the same quarter, revenue was also higher than anticipated.

Pfizer — The vaccine maker’s shares fell 3% despite the company reporting better-than-expected earnings for the fourth quarter and raising its full-year sales forecast for its Covid-19 vaccine. Pfizer reported revenue declines and provided weaker than expected guidance for the full year.

Amgen — Shares of the biotech company rose 8.6% following the company’s quarterly results. According to Refinitiv, Amgen earned $4.36 per share, excluding any items. This beat the $4.08 estimate of analysts. The company also reported $6.85 billion in revenue for the quarter, which was lower than the $6.87 billion expected.

Carrier Global — The heating and cooling products maker saw its shares rise more than 2% after it reported earnings for the most recent quarter of 44 cents per share, which beat analysts’ estimates by 5 cents, and quarterly revenue that topped Wall Street estimates.

General Motors — Shares fell 3.4% after Morgan Stanley downgraded the stockTo equalize weight with overweight, and to reduce its stock price target to $55 instead of $75. Morgan Stanley was not satisfied with the expectations of the automaker for its fiscal year 2022 earnings guidance. Morgan Stanley expressed concerns over GM’s move to electric cars.

Fiserv — The financial services technology company saw its shares fall more than 6% after it reported quarterly revenue that missed estimates slightly and issued full-year organic revenue guidance that was below estimates, according to FactSet.

Novavax — Shares of the drug maker tumbled more than 11% following a Reuters report that the company has only delivered about 10 million of the two billion Covid-19 vaccine doses it had planned to send around the world.

Chegg — The education tech company saw its shares jump 13% after it reported better-than-expected profit and revenue for its most recent quarter and issued a better-than-expected outlook. Chegg posted earnings of 28c per share beating estimates by 4 cents.

Guess — The apparel company’s shares rose nearly 6% after activist investor Legion Partners Asset Management called for the removal of its cofounders, Paul and Maurice Marciano, from its board, according to the Wall Street Journal. Legion said they were being accused of sexual misconduct and that this is threatening their turnaround plans.

 — CNBC’s Yun Li and Hannah Miao contributed reporting