Paul Tudor Jones is among the investing greats. The 70-year-old is widely credited with predicting the stock market collapse on Black Monday in 1987 when the Dow Jones fell a whopping 22%. Jones' hedge fund, Tudor Investment Corp, has posted average annual returns of roughly 19% over its more than four-decade existence, according to Hedge Fund Alpha, and Jones is reportedly worth over $8 billion, according to Forbes. Given his accomplishments, the market pays attention to what Jones says and what stocks Tudor Investment Corp buys and sells. Recently, Jones purchased a BlackRock ETF that MicroStrategy Executive Chairman Michael Saylor, reportedly worth more than $11 billion, thinks can rise roughly 12,771% over time. Let's take a look.

Saylor's $13 Million Take

After the completion of each quarter, funds that invest more than $100 million must file a 13F form with the Securities and Exchange Commission (SEC), disclosing what stocks they held at the end of each calendar quarter. They must do so within 45 days of the close of the most recent quarter and then the public can access these forms through the SEC's database.

In the third quarter, Tudor Investment Corp increased its position in the iShares Bitcoin Trust ETF (NASDAQ: IBIT) by more than 400%, and now holds over 4.4 million shares of the BlackRock ETF. Bitcoin, the world's largest cryptocurrency by market value, and Ethereum, the world's second-largest cryptocurrency, are the only two tokens the SEC approved for spot ETFs -- Bitcoin spot ETFs like iShares Bitcoin Trust mirror Bitcoin's price by owning the token itself. The ETF stores and manages the crypto assets and then sells shares to investors. The ETF currently has a fee of 0.25% of the fund's net asset value.

Tudor Investment Corp owns thousands of stocks, so it's difficult to know if Jones pulled the trigger on the buy himself. However, Jones has publicly recommended Bitcoin as an investment, so we know he's a fan.

Jones recently advocated for Bitcoin in response to the worsening fiscal situation in the U.S. The federal government is currently laden with tens of trillions in debt and operating at a deficit. Jones' theory is that the government will essentially need to inflate itself out of this situation, which is why he thinks all roads lead to inflation. He believes investors need to hedge themselves in preparation and that investments like gold and Bitcoin are good options.

However, nobody is more bullish on Bitcoin than Saylor. MicroStrategy, the company he founded and whose board he now oversees, has been buying loads of Bitcoin and has not slowed down, even as the token approached and eventually surpassed $100,000. Saylor thinks Bitcoin is just getting started and can hit $13 million per token by the year 2045, implying over 12,771% upside from current levels (as of Dec. 12).