Shares of Tube Investments of India Ltd., the Murugappa Group company, fell on Thursday, May 15, in response to its March quarter results.Revenue for the quarter remained flat at ₹1,957 crore, compared to the ₹1,962 crore it reported during the same quarter last year. The company reported a net profit of ₹814 crore, compared to ₹248 crore during the same quarter last year. However, the boost in profitability is due to a one-time gain of ₹569 crore. The one-time gain is due to a fair value gain on Compulsorily Convertible...