Their biggest backers include an unlikely group of insurance companies, mutual funds and other usually conservative bond investors.The software company turned itself into a bitcoin whale and now owns some $48 billion of the cryptocurrency.

MicroStrategy Inc. bought $1.1 billion of Bitcoin, as the company gears up for a shareholder vote on a 30 times increase its authorized Class A shares.

MicroStrategy shares closed down Wednesday, due to a decline in Bitcoin's price, which dropped 1.73% to $104,313.65.

MicroStrategy added to its bitcoin stash for the 11th week in a row, as the company's investors get ready to vote on increasing its Class A and preferred stock and enhancing its ability to buy more bitcoin.

MicroStrategy Inc. shareholders voted for a 30 times increase to the number of authorized Class A common shares to help finance the company’s Bitcoin buying.

The shareholders behind MicroStrategy have voted to dramatically increase the number of shares in a bid to raise funds for additional Bitcoin (BTC).

MicroStrategy—which almost exclusively focuses on securitizing Bitcoin—last year announced a “21/21 Plan” to raise $46 billion to buy even more Bitcoin. The plan would see the firm raise $21 billion via equity, with another $21 billion coming by selling fixed income securities.