• Mark Spitznagel, founder and chief investment officer of Universa Investments, is known for his cautious approach to investing, but has recently been more bullish on the market. Despite his optimism, he still believes that a major market correction is inevitable, comparing it to the bursting of the largest bubble in history.

Spitznagel's hedge fund specializes in tail-risk hedging, a strategy aimed at protecting against unforeseen economic catastrophes. While he remains positive about the market in the short term, he also cautions that a significant downturn could be on the horizon.

He attributes the potential bubble burst to a combination of factors, including excessive debt and tightening monetary policies. Although he anticipates a market crash of up to 80%, he currently sees the economy as still holding up and expects further upside.

Despite his warnings, Spitznagel maintains his bullish outlook for now, citing the Fed's supportive stance and the possibility of a "euphoric high" in the market. However, he is mindful of the risks and the need to remain vigilant.