Strategy, a Bitcoin treasury company, has transferred 6,536 BTC, valued at over $600 million, to Fidelity Custody Deposit in the past 48 hours, according to Arkham monitoring. This move brings the total amount of Bitcoin transferred to Fidelity to 183,887 BTC, representing 28.2% of Strategy's total holdings of 650,000 BTC. The transfer underscores Strategy's reliance on Fidelity for secure asset custody.