Tetra Tech is trading 4.1% down at $32.02, with the decline most consistent with broad market pressure. - No negative company-specific catalyst surfaced in the October 7 search; coverage noted a leadership promotion and a Wall Street Zen upgrade to Buy, neither of which explains the decline. - Treasury yields and oil prices are rising as investors await the Fed minutes. Industrials and major indexes are also lower, supporting a macro-driven explanation.