The 30-share index Sensex was trading 121 points up during noon trade, joining the group of other rebounding Asian stock markets.

Metals and realty stocks remained top gainers and saw major buying action.

The BSE Sensex, which belled the day at 18,027.12 points, stood at 18,087.72, up 116.6 points (0.65%) as against its last closure at 17,971.12.

In contrast, the broad-based Nifty gained 0.6% to trade at 5,435.

The BSE midcap index surged 1.37%, whereas the BSE smallcap index remained up by 1.53%.

Consumer durables, PSU, and telecom scrips also saw healthy buys.

The overall breadth of the stock market breadth remained positive as it witnessed 2,117 advancements as against 714 declinations.

Other Asian bourses also gained on account of positive signals from Wall Street.

The Japanese Nikkei gained 1.17% to end the session at 8,927.02.

Hong Kong's Hang Seng gained 0.29% at 20,596.27.

The Chinese Shanghai Composite index, dropped from its intra-day peaks to rule 1.02% down at 2,611.91.