MicroStrategy plans to raise $42 billion over the next three years to expand its Bitcoin holdings.The company aims to raise $21 billion from equity and $21 billion from fixed-income securities.This capital would allow MicroStrategy to acquire around 578,586 BTC, approximately 2.7% of Bitcoin's total supply.Despite facing a net loss of $340 million this quarter due to an impairment charge, MicroStrategy's stock has gained nearly 300% this year.