LONDON MARKET OPEN: Aviva rises as Italy exit begets capital return Thu, 4th Mar 2021 08:52 (Alliance News) - Stock prices in London opened lower on Thursday as widening bond yields in the US continued to raise concern about rising inflationary pressure, while Aviva rose as it pressed ahead with transformation plans. The 10-year US Treasury note yield firmed to 1.48%, having encroached upon 1.5% earlier. The FTSE 100 index was down 36.35 points, or 0.5%, at 6,639.12. The mid-cap FTSE 250 index was down 110.09 points, or 0.5%, at 21,326.23. The AIM All-Share index was down 0.3% at 1,184.46. The Cboe UK 100 index was down 0.4% at 662.50. The Cboe 250 was down 0.5% at 19,004.85, but the Cboe Small Companies was up 0.1% at 13,492.82.