Internet reports that corporate bitcoin finance company Strategy (ticker symbol MSTR) recently purchased approximately 10,000 bitcoins for US$1 billion, bringing its total holdings close to the 600,000 BTC mark. The company's recent purchase capital came mainly from the initial public offering of its $1 billion Stride permanent preferred stock (STRD). Analysts at TD Cowen said the process "creates a channel for high-yield funds to flow into Bitcoin in the future." In addition, mark-to-market sales of STRK and STRF also provided the company with additional funding. Following its latest purchase last week, Strategy currently holds a total of 592,100 BTC units. "As a result, we expect [STRD]'s dividend yield to be higher than the company's preferred stock," TD Cowen analysts wrote in a report on Tuesday. The underlying bitcoin value of the strategy is $63 billion, while total debt plus outstanding preferred stock is worth $11.6 billion, leading analysts to "believe these subordinated securities are very safe."