Mumbai: The Bombay Stock Exchange benchmark Sensex rose by nearly 185 points in opening trade on Friday, extending Thursday’s gains on the back of increased buying by funds amid a firming trend on other Asian bourses.

Covering-up of short positions by speculators also supported the upside in stock prices.

The 30-share index of the Bombay Stock Exchange, which gained 176.86 points in yesterday's trade, moved up further by 184.83 points to 17,912.32 in opening trade, with PSU, IT, banking, metals and auto sector stocks leading the rally.

In a similar fashion, the wide-based National Stock Exchange Nifty index spurted by 55.95 points to 5,375.95.

Brokers attributed the rise in stock prices to increased buying by funds and retail investors, triggered by a firming trend on other Asian bourses.

In addition, covering-up of short positions in view of approaching monthly expiry in the derivatives segment on the NSE also influenced the market sentiment, they said.