Datavault AI is trading 5.22% down at $0.15 on September 29, 2026; no confirmed catalyst for the decline has been identified. - The latest company press release listed on its investor-relations site predates today. - A shareholder-law-firm alert published September 29 concerns an existing securities lawsuit and historical allegations, but does not establish a link to today’s move. - Broader indexes are mixed and do not clearly explain the decline.