Bloomberg journalists discuss today's biggest winners and losers in the stock market. Listen for analysis on the companies making news on Wall Street.

Partially a result, Novo Nordisk has steadily declined since last summer. Over the past year, NVO shares are down more than 57%. And since the beginning of 2025, the company’s share price has declined more than 35%. As of the time of this writing, NVO shares are down just over 20% this morning to $55.17 per share.

A U.S. ban on copycat versions of Novo Nordisk's Wegovy has begun to lift use of the weight loss drug, but the company will need to show more robust growth in the months ahead to bolster market confidence,

Weight-loss patients voice concerns as CVS Caremark drops Zepbound coverage for Wegovy, though exceptions may exist for those with previous adverse reactions.

The U.S. FDA ban on compounded versions of Novo Nordisk's Wegovy has increased its prescriptions by 33%. Despite this, investor confidence remains shaken due to competitive pressures from Eli Lilly's Zepbound and market challenges.

Novo Nordisk's new CEO Maziar Mike Doustdar has been handed the reins to turn around the Wegovy-making firm's flagging sales growth and sliding share price. He first will need to win over sceptical investors.