B Riley Financial call volume above normal and directionally bullish

Bullish option flow detected in B Riley Financial with 27,993 calls trading, 8x expected, and implied vol increasing almost 19 points to 196.37%. 2/28 weekly 5 calls and 2/28 weekly 4.5 calls are the most active options, with total volume in those strikes near 11,000 contracts. The Put/Call Ratio is 0.25. Earnings are expected on March 3rd.