🟢 Advanced Drainage Systems is trading 8.13% up in pre-market with catalyst still unclear

Advanced Drainage Systems is trading at $141.36, up 8.13% in pre-market; the catalyst remains unclear.

• No verified September 23, 2026 earnings release, guidance update, acquisition, or material company announcement was identified; the press-release page showed no apparent overnight catalyst.
• Broader markets were only modestly higher, while extended-hours activity was unusually strong.