Tecnoglass is trading at $38.15, up 9.3% after-hours on October 5 versus the regular-session close of $34.91; no specific catalyst has been confirmed. - Its investor-relations page lists no October 5 announcement; the latest release is the September 10 dividend notice, following August 6 second-quarter results. - The broader market was positive, but the S&P 500 move of +0.68% is much smaller and does not clearly explain the gain. - No after-hours trading-volume information was confirmed in sources reviewed.