The 1,500 points fall in the BSE Sensex from its all-time high level of 21,207 on January 10 has shaved over Rs 1,00,000 crore (Rs 1 trillion) from the market values of the two Ambani brothers' stocks.

The Anil Dhirubhai Ambani Group, which is raising Rs 11,700 crore (Rs 117 billion) through the public offer of Reliance Power, has seen a value erosion of Rs 48,000 crore in the last seven days.

The aggregate market capitalisation of five ADAG group companies -- Reliance Energy [Get Quote], Reliance Capital [Get Quote], Reliance Communications [Get Quote], Reliance Natural Resources [Get Quote] and Adlabs Films [Get Quote] -- has declined by 13.45 per cent or Rs 48,077 crore (Rs 480.77 billion) from its all-time high level of Rs 3,57,515 crore (Rs 3,575.15 billion) to Rs 3,09,438 crore (Rs 3,094.38 billion) on Thursday.

On the other hand, the market wealth of three Mukesh Ambani Reliance group companies -- Reliance Industries [Get Quote], Reliance Petroleum [Get Quote] and Reliance Industrial Infrastructure [Get Quote] -- has declined by 9.47 per cent or Rs 56,244 crore (Rs 562.44 billion) to Rs 5,37,950 crore or Rs 5,379.5 billion (Rs 5,94,194 crore or Rs 5,941.94 billion).

The Sensex has declined 7.10 per cent or 1,505.95 points from its lifetime high of 21,206.77 on January 10 to close at 19,700.82 on Thursday.

The total m-cap of the actively traded stocks on BSE has eroded by Rs 611,444 crore (Rs 6,114.44 billion) from its all-time high of Rs 75,33,789 crore (Rs 75,337.89 billion) to Rs 69,22,345 crore (Rs 69223.45 billion) on Thursday. The Ambani brothers also accounted for 16 per cent fall in market capitalisation.

While Adlabs Films, the largest loser among the ADAG group companies,has declined by 17 per cent, Reliance Energy has fallen 5.9 per cent, Reliance Communications 13.6 per cent and Reliance Capital 11 per cent.

Among the Mukesh Ambani promoted Reliance group, Reliance Petroleum is the largest loser (15.6 per cent). Reliance Industries has declined 7.9 per cent.