A year ago, even with 30 listed companies the Tata group was smaller than the group under the leadership of Mukesh Ambani. The latest market valuation places the Tata Group at Rs 4,40,000 crore. The second best Mukesh Ambani group of Companies are worth at Rs 2,85,000 crore.

The Anil Ambani -led ADAG, which was ranked in the third position last year, was no where to be seen in the top 10 also. The group's combined market wealth was reduced by more than Rs 60,000 crore.

The Mukesh Ambani-led group's market valuation fell by about Rs 73,000 crore, but that of Tata's went up by more than Rs 1,00,000 crore in the same period.

Analysts claim this has been due to controversies surrounding the companies of the Ambani brothers.

Shares of both the group companies -- Mukesh Ambani and Anil Ambani -- have been continuously falling. In the same time the Tata Group of companies have seen their share prices go up despite its own name being cropping up in scandals.

The top Tata companies which have added market wealth over the past one year includes the name of TCS , Tata Motors , Tata Steel , Titan, Tata Coffee , Tata Chemicals and Rallis.

But the Mukesh Ambani led, Reliance Industries lost approximately Rs 72,000 crore, and the only other listed firm Reliance Industrial Infra also lost nearly Rs 650 crore.

Among the ADAG firms, the losses in the share price of Rcom stands at Rs 21,000 crore, nearly Rs 20,000 crore for R-Power, additionally Rs 14,000 crore for R-Infra and over Rs 5,000 crore for Reliance Capital.

During this period when invetors' interest in Reliance Stocks have reduced. Tatas are not the only gainers, many other groups have also gained likes of the Birla, Mahindra, HDFC, Adani, Bharti, L&T, Jindal and Bajaj groups experts.