The BSE Sensex lost 765.69 points or 4.85 percent to 14,994.83 in the week ended Wednesday. The S&P CNX Nifty slipped 171.85 points or 3.62 percent to 4573.95 in the week.
The BSE Mid-Cap index lost 619.35 points or 9.40 percent to 5,964.10 for the week. The BSE Small-Cap index slumped 857.30 points or 10.61 percent to 7,222.20 in the week.
Trading for the week began on a bearish note as global markets suffered setback with the benchmark index BSE Sensex posting its biggest ever single-day point fall Monday.
Sensex lost 951.03 points or 6.03 percent at 14,809.49 and the broader based S&P CNX Nifty tumbled 242.70 points or 5.11 percent at 4,503.10 on that day.
On Tuesday, the market registered small gains in highly choppy trade. The 30-share BSE Sensex rose 23.97 points or 0.16 percent at 14,833.46 and the broader based S&P CNX Nifty ended up 29.9 points or 0.66 percent at 4,533.
The market pared most of its early gains Wednesday, as selling pressure emerged at higher levels. The market registered modest gains on that day.