Indian stocks dropped for the ninth day, the longest run of losses in a decade, on concerns that rising borrowing costs will pressure company earnings. Bharti Airtel Ltd, the nation’s largest mobile phone operator, fell the most in three months. Profit in the quarter ended in March was Rs. 1,400 crore, compared with Rs. 2,040 crore a year earlier. That lagged behind the Rs. 1,630 crore average of 10 analysts’ estimates compiled by Bloomberg.