Shares of Dr Reddy`s Laboratories are trading at Rs 403.00, down Rs 33.15, or 7.60% at the Bombay Stock Exchange (BSE) on Monday at 10:35 a.m.The scrip has touched an intra-day high of Rs 441.00 and low of Rs 402.00. The total volume of shares traded at the BSE is 18,896.In the earlier session, the shares fell 5.54%, or Rs 25.6, at Rs 436.15.Currently, the stock is trading at all time 52-week low, which is below 46.97% over the 52-week high of Rs 760.00.