The statement is strongly supported by multiple, high-authority primary sources. Several news reports from credible financial news outlets directly corroborate both elements of the claim. A report from Nihon Keizai Shimbun and a news brief from Jiji Press explicitly state that the Nikkei average, a major Japanese stock index, dropped by more than 900 points. A market update from a major securities firm reports an even larger drop of over 1200 points, which is consistent with the claim. Crucially, these same sources directly link this significant market decline to remarks made by the Governor of the Bank of Japan. While one source mentions a smaller drop of 300 points, it appears to be describing market sentiment in anticipation of the Governor's remarks rather than the reaction to them, and thus does not constitute a direct contradiction. The remaining sources from the Bank of Japan and financial data providers confirm the existence of the Governor's speeches and provide the raw data to verify such a market drop, lending further credibility. The overwhelming weight and consistency of the evidence from Japanese financial news sources makes the statement highly likely to be true.