Coherent is trading 5.09% lower at $322.57, with available reporting pointing to a pullback in AI optical networking shares. - Shares were already indicated lower before the open as the group took a breather, while broader markets were near record highs. - No clear company-specific announcement or analyst action explaining the October 7 decline appeared in the results reviewed. - Shares had risen sharply earlier in the month; current-session volume data was unavailable.