LITX is trading sharply lower, down 3.4%, apparently as profit-taking after recent gains is amplified by its 2x daily leverage. - No clear negative Lumentum catalyst was identified for September 23, 2026; a mildly weaker broader market added pressure. - Lumentum is showcasing AI optical-interconnect products at ECOC 2026, while analysts continue citing strong AI-networking demand. - The move appears more like a leveraged retracement than fundamental deterioration.