Why Is Defiance Daily Target 2X Long STX ETF ( $STXL) Down -29.70% Today? (Find out why any stock moved today on Tickeron.) STXL fell roughly 29.70% to $26.91, down from a prior close of $38.28, in early trading on Friday, October 2, 2026. The primary catalyst was a report that Toshiba plans to double its hard-disk-drive (HDD) production capacity for AI data centers by fiscal 2027. Underlying holding Seagate Technology dropped about 14.8%, and the fund's 2X daily leverage amplified that decline. $QQQ $DRAM $SOXL $SPY