QTOP is trading at $36.38, down -2.49% versus the October 29 close, as investor doubts about returns on heavy AI investment intensified. - Doubts intensified after disappointing results and outlooks from Alphabet, Amazon, and Intel. - The tech-led selloff spread through Asian semiconductor shares; Nasdaq 100 futures fell about 2%. - No major U.S. economic indicators were scheduled for October 30, so earnings and sector sentiment appear to be the main catalysts.