Vale call volume above normal and directionally bullish

Bullish option flow detected in Vale with 11,424 calls trading, 1.2x expected, and implied vol increasing over 1 point to 40.46%. 1/13 weekly 18 calls and Feb-23 18 calls are the most active options, with total volume in those strikes near 6,700 contracts. The Put/Call Ratio is 0.59. Earnings are expected on February 23rd.