Ichor Holdings is trading 4.08% lower at $58.39, with broader semiconductor weakness a plausible backdrop but no direct cause confirmed. - The Philadelphia Semiconductor Index fell 1.2% Wednesday as Treasury yields rose; U.S. index futures were lower Thursday morning. - No major company-specific overnight announcement was found. An October 8 report said Zacks Research cut its rating to Hold from Strong Buy, citing a Monday report; timing does not establish a new pre-market catalyst. Previous close: $60.87.