New Delhi, July 21 -- The Indian stock market benchmark indices, Sensex and Nifty 50, are likely to open on a subdued note on Tuesday, tracking mixed global cues as investors remain cautious amid escalating geopolitical tensions in the Middle East and await key corporate earnings.

Asian markets traded mixed in early trade, while US equities ended lower overnight ahead of a busy earnings calendar.

On Monday, domestic equity benchmarks closed in the red as concerns over the intensifying US-Iran conflict and elevated geopolitical risks dampened investor sentiment. The BSE Sensex fell 442.93 points, or 0.57%, to 77,708.52, while the Nifty 50 declined 95.80 points, or 0.39%, to settle at 24,238.50.

Tensions in the Middle East remained eleva...