On Monday, both the benchmark indices extended their gains for the fourth straight session. Experts believe the heavy rainfall in Mumbai had revived monsoon hopes and FIIs turning net buyers also boosted investor sentiment. The 30-share BSE Sensex jumped 521.16 points, or 0.67 per cent, to settle at 78,285.07, a closing level not seen since April 22. During the day, it surged 634.15 points, or 0.81 per cent, to 78,398.06. The 50-share NSE Nifty climbed 159.50 points, or 0.66 per cent, to end at 24,430.35, the highest closing level since April 21. “Markets maintained their upward bias despite mixed global cues, driven by buying in select banking, auto, capital goods and realty shares. The calmness in the West Asia region and hopes for a relatively steady corporate earnings season kept investor mood optimistic, although overall sentiment remains cautious,” Ankur Punj, MD & Business Head at Equirus Wealth told PTI. Globally, profit-booking in crowded AI-led trades impacted the global market while India could perform well led by large caps due to improvement in FIIs inflows trend, he added.