Corteva is trading 83.57% down at $12.76 after completing its seed-business separation into Vylor Inc. on October 1, 2026; the price adjustment is associated with the spin-off. - The distribution gave eligible Corteva shareholders one Vylor share for each Corteva share. - Corteva closed at $77.65 on September 30. - No trading-volume information was provided, and the cited filings do not establish a separate negative operating or earnings catalyst.