LyondellBasell Industries is trading 5.15% lower at €50.42, with no definitive cause identified. - No clear company-specific announcement explaining the September 25 decline was identified. - UBS lowered its price target to $62 from $64, maintaining a Neutral rating; this may have contributed to caution but is not a confirmed sole trigger. - Chemical-sector concerns were also noted, while U.S. and European markets advanced on September 25; the DAX gained 0.59%.