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—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.

Shareholders of MicroStrategy (MSTR) gave the company the go-ahead to boost its number of authorized class A common shares by 30-fold to finance purchases of 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.

MicroStrategy Inc. bought $243 million of Bitcoin, the 10th consecutive weekly purchase by the enterprise software company turned leveraged Bitcoin proxy.

MicroStrategy shareholders approved an increase in Class A common shares. Authorized preferred stock shares will also rise. The proposals passed with 56% approval, bolstered by