The Sensex opened with a positive gap of 34 points at 12,064. After touching a high of 12,071, the index soon dipped into the negative zone.
Sustained selling mainly in banking and technology stocks saw the index languish in the negative zone for most of today.
A late bout of heavy selling saw the index tumble to a low of 11,882 - down 189 points from the day's high.
The Sensex finally closed with a loss of 1% (115 points) at 11,915.
The Nifty closed at 3,539, down 35 points.
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