Mumbai, Nov. 12 -- Indian equity markets opened marginally lower on Thursday amid a continuing tug of war between foreign institutional investors (FIIs) and domestic institutional investors (DIIs), with foreign investors turning aggressive buyers while domestic investors continued selling.

The NSE Nifty 50 index opened at 25,227.50, declining 26.30 points or 0.10 per cent, while the BSE Sensex opened at 81,827.20, down 52.20 points or 0.06 per cent.

V K Vijayakumar, Chief Investment Strategist at Geojit Investments, said the recent market rally has been primarily driven by aggressive buying by foreign institutional investors.

"The Nifty rally of 9.55% in seven trading sessions so far in November is being led primarily by the aggressive...