Strategy, the world's largest publicly traded corporate holder of Bitcoin, has moved about $297 million worth of the cryptocurrency to external wallets, fueling scrutiny over a possible sale.

On-chain analytics firm Lookonchain said on September 28 that Strategy transferred 3,568 Bitcoin from its existing wallet to another wallet over the previous nine hours. The Bitcoin was worth about $297 million at the time of the transfer.

Markets are watching whether Strategy may be preparing to sell Bitcoin. Lookonchain said it has not yet confirmed whether the large transfer was tied to a sale or was simply a move to a new wallet.

Strategy had previously disclosed that it bought an additional 1,665 Bitcoin for about $142.7 million last week, from September 21 to September 27. That lifted its total Bitcoin holdings to 847,666, more than 4% of Bitcoin's maximum supply of 21 million.