The significant drop in the ITA ETF's price is the result of a planned 3-for-1 forward stock split, which is effective today, November 5, 2026. The share price has been adjusted to approximately one-third of its previous closing value to reflect the corporate action. Consequently, shareholders now hold three times the number of shares at this new, lower price. This is a technical adjustment and not indicative of a negative fundamental development in the aerospace and defense sector.