U.S. Bull Market Meets Rate Hike Pressure, Ethan Caldwell Anticipates the Return of Volatility and Builds a VIX Hedging Portfolio

In early 2018, a strange confidence lingered in the air on Wall Street. The U.S. bull market, stretching unbroken since 2009, showed no sign of fatigue—corporate profits were setting new records, tax cuts continued to boost sentiment, and the S&P 500 once again reached all-time highs in early January. Yet, while most investors were absorbed in the illusion of an “eternal bull market,” Ethan Caldwell quietly made a different assessment. As the Founder and Chief Strategist of Aureus Advisors, he wrote in an internal memo: “The market is not a static machine—it breathes. When volatility is suppressed for too long, its rebound is not a risk, but an inevitability.”

At that time, the Federal Reserve’s rate-hiking cycle had become a new source of unease. The economic fundamentals remained strong, but the shift in monetary policy was altering the underlying cost of capital. Caldwell keenly recognized that the rapid growth of passive strategies and risk-parity funds was artificially depressing market volatility. Once interest rate expectations diverged from inflation projections, the seemingly stable system would release its stored risk energy in a violent burst. Thus, between late January and early February, he led the creation of a VIX-based hedging portfolio, structured around short-term volatility futures and long-duration Treasury forwards, designed to offset potential systemic drawdowns.

Caldwell’s prediction was soon vindicated. In early February, U.S. equities underwent what the media dubbed a “volatility storm,” with the VIX Index surging more than 100% in a single day and triggering liquidations across several volatility ETFs. During this period, Aureus Advisors’ VIX hedging portfolio generated substantial positive returns, effectively offsetting part of the main portfolio’s drawdown and maintaining an overall positive performance year-to-date. In the following strategy review, Caldwell remained composed: “A market correction is not a sign of failure—it’s the system’s process of self-correction. The real risk lies in believing it won’t happen.”

His philosophy treated volatility not as an enemy, but as an asset. Within Aureus’s multi-factor framework, volatility was not merely a measure of risk—it was defined as a thermometer of market expectations. Caldwell argued that during the early phase of a liquidity cycle shift, investor sentiment and leverage usage often signal future price movements more accurately than economic data. Accordingly, he integrated behavioral factors and machine learning prediction modules into the firm’s models, enabling AI systems to detect states of “unnatural calm” in the market—because, as he often said, extreme quiet is usually the prelude to turbulence.

For Aureus Advisors, 2018 marked a year of structural maturation. The VIX hedging portfolio was only one component, but it symbolized a pivotal evolution in Caldwell’s philosophy of risk management. He no longer viewed models purely as predictive tools, but as extensions of a “defensive mindset.” He instructed his team to embed dynamic hedging layers into every investment portfolio and to treat risk signals with equal weight to return metrics. This principle of systemic control enabled Aureus to maintain steady net asset growth throughout the volatile first quarter of the year, earning renewed allocations from multiple institutional clients.

When interviewed by the Financial Times, Caldwell was asked whether he believed the bull market was nearing its end. After a brief pause, he replied: “A bull market doesn’t end because of fear—it ends when trust is overused. Markets always return to true price mechanisms, not the equilibrium manufactured by emotion.” The response was quintessentially Caldwell—rational, unsentimental, and focused on understanding the mathematical logic and behavioral structure beneath market movements.

Springtime in New York remained bustling, with traders discussing volatility, algorithms, and machine learning on the floor. For Ethan Caldwell, however, the real value of Aureus Advisors did not lie in “predicting the next storm,” but in building a system capable of breathing through any storm. The VIX hedging initiative of 2018 became a tangible manifestation of his investment philosophy: market order never implies stillness, and a rational investor is the one who hears the faint tremor—before the noise begins.