Bullish option flow detected in Jumia Technologies with 13,841 calls trading, 3x expected, and implied vol increasing almost 8 points to 138.11%. 8/9 weekly 17.5 calls and 8/9 weekly 18 calls are the most active options, with total volume in those strikes near 9,800 contracts. The Put/Call Ratio is 0.57. Earnings are expected on August 6th.