Over 6,050 contracts traded on a November 15th, 2019 $30.50 put option on JD.com (JD). That’s a 17-fold surge in volume against the prior open interest of 354 contracts.

The option has 14 days left before expiration, and shares of JD are at $31.24, so they’d still need to drop for the option to close in-the-money. Adding in the $0.80 option premium, and traders are betting on a drop under $30.

The Chinese e-commerce giant often has some swings up and down, and may have just started a short-term pullback based on the latest charts. If that’s the case, then the trade, while short-term, could possibly provide a trader with a 25-50 percent return in the next few weeks—not too bad for an options trade.