Traders placing big bets ahead of ECB Meeting

European Central Bank President Mario Draghi is widely expected to reveal fresh increases to the bank's bond-buying program at Thursday's monetary policy meeting.

Ahead of that meeting, "Halftime Report" trader Jon Najarian, is seeing unusual options activity being traded in the double-short euro ETF, EUO.

Jon is following the tape by buying the February 28 strikecalls in the UltraShort Euro ETF, anticipating that Draghi's announcement will push the euro lower, and the EUO ETF higher into 2016.