Novo Nordisk's U.S.-listed shares are surging 9% Friday morning after the Danish drugmaker reported early stage results for its amycretin weight-loss drug.

Novo Nordisk on Friday announced early-stage trial results for its amycretin obesity drug for subcutaneous injection, saying people with obesity or overweight treated with the drug achieved a 22% weight loss after 36 weeks.

Novo Nordisk shares were 9.5% higher after the pharmaceutical giant said an experimental weight-loss shot showed patients lost 22% of their bodyweight in a clinical trial.

Novo Nordisk A/S rose the most in a month after an experimental shot delivered as much as 22% weight loss in an early-stage trial, boosting investors’ hopes for the drugmaker’s pipeline.

Novo Nordisk stock is paring its year-over-year deficit on positive early stage trial results for the company's new weight loss drug. Here's what you need to know.

Novo Nordisk has reported 22% weight loss in people who received weekly amycretin injections for 36 weeks, triggering an 11% jump in the Danish drugmaker’s share price in premarket trading.

On Friday, however, Novo Nordisk announced top-line results in yet another trial. While the results don't initially sound as good as those in the trials cited above, however, the speed at which they were achieved has investors cheering, and Novo Nordisk stock is up 7.7% through 10:50 a.m. Friday morning.