Strategy, the largest corporate holder of Bitcoin, said it plans to sell 2.5 million shares of permanent preferred stock called Stride (STRD) as part of its continued efforts to hoard Bitcoin, according to online reports. "Strategy plans to use the net proceeds from this offering for general corporate purposes, including the acquisition of Bitcoin and working capital," Strategy said in a statement. The company said the issue was 2,500,000 shares of Strategy 10% Series A permanent Stride preferred stock. Strategy added that the offering is open to "institutional investors and selected non-institutional investors." The company has also recently issued other preferred shares to the public, called Strike (STRK) and Strife (STRF), in addition to plans to raise $84 billion (50/50 equity and 50 debt) for future Bitcoin purchases. STRK and STRF are convertible preferred shares. Strategy said on Monday that after its latest acquisition, its total holdings of bitcoins have exceeded 580,955, worth more than $60 billion.