Bullish option flow detected in Nokia (NOK) with 7,274 calls trading, 1.0x expected, and implied vol increasing almost 2 points to 32.11%. Jan-27 4.5 puts and Apr-25 5 calls are the most active options, with total volume in those strikes near 3,500 contracts. The Put/Call Ratio is 0.52. Earnings are expected on April 24th.