Benchmark indices saw a gap-down opening on October 28 by declining up to 0.9% lower due to various reasons, including rising crude prices. At 9:20 am, the Sensex was down 712.74 points or 0.97% at 72,885.93, and the Nifty was down 186.90 points or 0.82% at 22,562.85. About 1,100 shares advanced, 1,540 shares declined, and 145 shares were unchanged. Thirteen of the 16 major sectors logged losses. Key factors behind market decline