🔴 First Solar is trading 4.5% down today after shifting TOPCon enforcement to U.S. lawsuits

First Solar is trading 4.5% down at $193.25 after announcing on September 16, 2026, that it will withdraw its USITC Section 337 complaint and shift enforcement toward U.S. District Court lawsuits against alleged TOPCon patent infringers, including Canadian Solar, JinkoSolar, T1 Energy, and Trina Solar.

• The strategy change follows the administration’s Section 232 trade action and appears to be the clearest company-specific catalyst.
• Broader energy weakness and pre-Fed uncertainty add sector pressure, but major indexes are higher.