Bitcoin Treasury Datavault AI Crashes 50% After Losing Access to $92 Million in BTC

Datavault AI disclosed it cannot access bitcoin held on Biconomy exchange, forcing a $92.2 million asset writedown and sending shares into freefall as investors question the security of corporate Bitcoin holdings.

Shares of Datavault AI, a publicly traded company holding Bitcoin as a treasury asset, plunged 50% after the firm disclosed it cannot access $92.2 million worth of bitcoin held on the Biconomy exchange. The revelation, announced as an accounting correction for year-end 2025 financials, marks one of the largest known losses of corporate Bitcoin holdings due to exchange custody failures.

The company stated that bitcoin deposited on Biconomy—a cryptocurrency exchange—could not be withdrawn, effectively rendering the assets inaccessible. Datavault AI did not disclose when it first discovered the access problem, how long the funds had been locked, or whether Biconomy is experiencing technical difficulties, regulatory issues, or insolvency. The exchange has not issued a public statement regarding the situation.

The incident exposes a critical risk in the growing trend of corporate Bitcoin treasuries: companies that hold cryptocurrency on third-party exchanges rather than in self-custody solutions can lose access to their holdings without warning. Unlike traditional bank deposits, which in many jurisdictions are insured up to certain limits, cryptocurrency held on exchanges typically carries no such protection.

Datavault AI joins a growing list of institutional Bitcoin holders who have suffered losses due to exchange failures. Earlier this year, India's largest crypto exchange absorbed a $16 million loss after an internal wallet failure, while Irish regulators fined Coinbase Ireland $3.6 million for fund safeguarding failures during a banking crisis. The pattern suggests that even well-known exchanges can experience custody breakdowns.

The $92.2 million writedown will force Datavault AI to restate its reported assets at the end of 2025, potentially triggering covenant violations on any debt agreements and raising questions about management's due diligence in selecting custody providers. Investors who bought shares based on the company's reported Bitcoin holdings now face the reality that a significant portion of those assets may be permanently lost.

For ordinary investors, the lesson is stark: not your keys, not your coins. While self-custody requires technical knowledge and carries its own risks of loss through user error, exchange custody introduces counterparty risk that can wipe out holdings overnight. Corporate treasurers and individual holders alike must weigh the convenience of exchange custody against the possibility of total loss.

The incident also raises regulatory questions about disclosure requirements for publicly traded Bitcoin treasuries. Datavault AI's shares traded for months before the accounting correction was announced, meaning investors were buying stock based on inflated asset figures. Whether securities regulators will impose stricter real-time disclosure rules for crypto holdings remains to be seen, but this case provides clear evidence of the need for such oversight.