SMGB.L is trading at £71.84 (-8.10%) as doubts over returns from AI infrastructure spending weigh on semiconductor stocks. - The price is the October 30 closing price; no November 2 London session had begun at the stated time. - On October 30, the Philadelphia Semiconductor Index fell 7.20%, with Intel, AMD and Nvidia among the decliners. - Weak Intel guidance and heavy hyperscaler capital spending, including Amazon’s, amplified sector-wide pressure.