India, Oct. 19 -- Both Sensex and Nifty opened lower on Monday as investors assessed September-quarter earnings from major private lenders HDFC Bank and ICICI Bank, while elevated crude oil prices weighed on sentiment.

The BSE Sensex opened at 74,594.65, falling 134.62 points, or 0.18%. The NSE Nifty 50 opened at 23,096.85, down 49.30 points, or 0.21%.

The weak opening follows a strong rally last week, when the Sensex surged 2,256.94 points, or 3.11%, while the Nifty gained 625.7 points, or 2.77%. Both benchmarks recorded their strongest weekly performances in around six months, supported by a rebound in information technology stocks following better-than-expected quarterly earnings.

Investors are closely tracking the September-quarter...