HII ▼ -0.6% - Huntington Ingalls Industries, Inc. $HII - Media Advisory — HII Unmanned Facility Expansion Ribbon Cutting Huntington Ingalls Industries fell 0.6% today following a media advisory about a ribbon-cutting ceremony for the company's unmanned systems facility expansion. The announcement of expanded unmanned capabilities production capacity had no apparent immediate market impact beyond the modest decline. 17-SEP-2026 11:30 AM ET