The stock climbed 8.38 per cent to settle at Rs 301.50 on BSE. Intra-day, it soared 15.56 per cent to Rs 321.50.
At NSE, shares of the company jumped 8.55 per cent to end at Rs 302.55.
The stock had surged 20 per cent in the previous session also, adding Rs 1,125.04 crore to Rs 4,866.04 crore in market valuation in two days on BSE.
On the volume front, 25.60 lakh shares of the company were traded on BSE and over one crore shares changed hands at NSE during the day today.
"We, as an API supplier, are bound by strict confidentiality agreements with our customers and will not have any prior knowledge of the stage of development of the customer's end product."
Since the company does not manufacture the innovator's end product in CRAMS segment, it is Tesaro lnc, which has received the US FDA (Food and Drug Administration) approval for cancer drug Zejula capsules and not Dishman Pharmaceuticals and Chemicals Limited, as mentioned in the news item, it had said.