U.S. retail investor fund flows into Novo Nordisk surged 32-fold on Friday, as the Danish drugmaker's weaker-than-expected obesity drug data offered a rare dip-buying opportunity, according to Vanda Research.

Novo Nordisk’s latest attempt in weight loss, a combination drug called CagriSema, matched the bar set by Lilly’s currently approved medicine, Zepbound, but didn’t cleanly surpass it in late-stage clinical trial findings reported Friday.

Results for its new CagriSema drug, while promising, fell below expectations, sending shares of the pharmaceutical giant down double digits in premarket trading. CagriSema, a drug that Novo Nordisk had hoped would become its next generation weight-loss aid,