BitMine Immersion Technologies Inc. (BMNR) experienced a sharp 5.05% decline in its stock price during Friday's trading session, following alarming comments from its own chair, Tom Lee, regarding the state of digital asset treasuries (DATs). The significant drop highlights growing investor concerns about the sustainability of cryptocurrency-focused investment strategies.

In a recent interview on Fortune's Crypto Playbook podcast, Lee warned that the DAT sector is "running out of steam" as valuations collapse. He pointed out that many firms in this space are now trading below their underlying asset value, suggesting that investors no longer view DATs as efficient vehicles for cryptocurrency exposure. "If that's not already a bubble burst, what is?" Lee remarked, raising questions about the future of companies like BitMine that have adopted this model.

BitMine, which rebranded from a mining company earlier this year, holds over three million Ethereum tokens, representing about 2.5% of the total supply. Despite the company's significant crypto holdings and Lee's assertion that Ethereum remains "the blockchain of Wall Street," investors appear to be reevaluating the premium they're willing to pay for such exposure. As the market digests these developments, it remains to be seen how BitMine and similar companies will navigate the changing landscape of institutional cryptocurrency investment, and whether they can regain investor confidence in the face of mounting skepticism surrounding the DAT sector.