Mizuho Financial Group's shares fell as much as 7.7% on Monday after the Japanese lender clarified it has not yet decided on a reported investment in Rakuten Bank.
The company's statement came in response to media reports suggesting a potential shift in its investment strategy.
The lender's shares have been under pressure, with the market reacting to the absence of a firm commitment on the reported move.
The stock's decline reflects investor concern over the lack of clarity regarding Mizuho's future capital allocation plans.
The lender's shares have been under pressure, with the market reacting to the absence of a firm commitment on the reported move.
The potential investment in Rakuten Bank had previously fueled speculation about Mizuho's strategic direction.
However, the company's denial of a decision has left investors uncertain about its next steps.