Key domestic barometers extended losses in morning trade. At 9:28 IST, the barometer index, the S&P BSE Sensex, was down 161.40 points or 0.51% at 31,524.35. The Nifty 50 index was down 40.80 points or 0.49% at 9,225.10. Selling in index major Hindustan Unilever (HUL) put pressure on bourses.