Editor’s Note: This article has been updated to clarify that MicroStrategy has already used the $800M raised to buy more Bitcoin. Michael Saylor-led MicroStrategy Inc. (NASDAQ:MSTR) said it has raised $800 million by selling convertible notes — essentially special loans that can be converted into company stock later. Investors bought all the notes offered, with an additional $100 million option fully exercised, the company said in a statement. Here’s the breakdown: Amount Raised: $800 millionInterest Rate: Low (0.625% per year)Maturity Date: March 15, 2030 (unless converted to stock earlier)Ho…