Howard Marks mentions the following risks beyond the primary risk of losing money:
According to Howard Marks, the primary source of risk in the stock market is not the market's components themselves (stocks, exchanges, or companies), but rather the behavior of investors. Prudent investor behavior mitigates risk, while panicked selling increases it.
The key takeaway from Warren Buffett's quote is that the less prudent other investors behave, the more prudent one must be in managing one's own investments. Essentially, it emphasizes the importance of counter-cyclical investing – acting cautiously when others are reckless.
This video features an interview with Howard Marks, discussing the distinction between volatility and risk in investing. The main purpose is to clarify the misconception that volatility equates to risk and to emphasize the importance of constant risk management in portfolio protection.