MicroStrategy Inc. (NASDAQ:MSTR) has become the epicenter of intense market speculation following a dramatic 23.64% stock decline over the past five sessions, while Bitcoin (CRYPTO: BTC) experienced a 5.

The architect of the company’s audacious Bitcoin-hoarding strategy explains why he calls the crypto “a flow of money from the 20th century to the 21st century.”

Shares in MicroStrategy, the largest corporate holder of bitcoin, initially jumped and then fell Monday after the software company said it had bought $5.4 billion of the cryptocurrency.