Bullish option flow detected in Jumia Technologies with 10,546 calls trading, 4x expected, and implied vol increasing over 9 points to 114.62%. 5/31 weekly 6 calls and 6/7 weekly 7 calls are the most active options, with total volume in those strikes near 7,200 contracts. The Put/Call Ratio is 0.20. Earnings are expected on August 15th.