Sun TV's stock ended the day with a loss of 4.84 per cent at Rs 392.10 on the BSE. During the day, it lost 9.54 per cent to Rs 372.70.
At the NSE, it tumbled 5.32 per cent to close at Rs 390.40.
Tracking weakness in the stock, the company's market value tumbled Rs 785.94 crore to Rs 15,452.06 crore. In terms of volume, 3.59 lakh shares of the company changed hands at the BSE, while over 28 lakh shares were traded at the NSE during the day.
The CBI last night arrested three people, including V Gowthaman, who was then Maran's additional private secretary, in connection with alleged allotment of more than 300 high-speed telephone lines to the then Telecom Minister's residence in Chennai which were extended to his brother's TV channel Sun TV.
Besides Gowthaman, the CBI arrested Chief Technical Officer S Kannan and electrician L S Ravi of Sun TV network, the agency had said.
The CBI alleged that nearly 323 residential lines were allegedly allotted in the name of the BSNL General Manager connecting the Boat House residence of Maran with the office of Sun TV through a dedicated underground cable.
CBI arrests Dayanidhi Maran's private secretary, 3 others
The story of Marans: Sun King and his brother
A peek into secretive world of Kalanithi Maran
Sun TV shares sink 10% after CBI arrests Maran's aide
Ex-telecom minister Maran says CBI trying to fix him