Following the ouster of Ghosn almost a year ago, Nissan has been hit by sliding profit, uncertainty over its future leadership and tensions with top shareholder Renault, whose shares fell 2 % to their lowest since April 2013 after Nissan's disappointing guidance. Operating profit at Japan's second-biggest automaker by sales came in at 30 billion yen ($274.98 million) during the July-September period versus 101.2 billion yen a year earlier. That compared with a mean forecast of 47.48 billion yen from 9 analyst estimates, and marked its worst second-quarter performance in a decade and a half. "Operating profit for the first half is off our target" for full-year profit, Stephen Ma, a corporate vice president and the incoming chief financial officer, told reporters. "We are revisiting all our assumptions, and as you can see that is why we revised down our forecast for sales volume for the full year".