Security Matters is trading 5.19% down at $10.41 after a 35.45% decline on September 21, 2026; no clear company-specific catalyst or September 22 announcement was identified. - Latest newsroom items were dated September 18 and covered plastics, not earnings, financing, regulatory, or deal news. - Bitcoin, Ethereum, and Solana each fell roughly 1% since the previous close, insufficient to explain the full decline; broader indexes are modestly higher. - Trading activity appears volatile amid a sharp multi-session selloff.