Mid- and small-cap indices faced significant declines, with the BSE Midcap dropping 2.5% and the Smallcap crashing 3.5%. The Nifty Midcap 100 and Smallcap 100 indices fell 2.61% and 4.10%, respectively, amid heightened volatility and widespread selling, driven by both global and domestic factors. The Nifty advance/decline ratio plummeted to 1:8, reflecting the bearish sentiment in the market.