Highlighting systemic stress before market reactions
Turbulence Index Report
for w/c April 20 2026
Indices Break to Records, Oil Shock Cools
What it is
What is the Turbulence Index?
The Turbulence Index is a proprietary diagnostic indicator developed by 20Quant to monitor structural stress across the broader financial market environment, including, but not limited to, equities.
Inspired by academic research on multivariate market turbulence and statistical distance, it evaluates how joint asset behaviour deviates from historical norms. While primarily used to identify market regimes, it has also shown value in backtests as an early warning signal, often appearing ahead of rising volatility and weaker returns. These relationships are not deterministic and should be interpreted as directional rather than guaranteed.
Academically Grounded
Grounded and refined in academic research (integrating academing work since 2004) on multivariate market turbulence and Mahalanobis distance.
Multivariate Correlation Among 13 Asst Classes
Measures joint asset behaviour to capture stress emerging through correlation breakdowns.
Regime-Oriented Design
Built to characterise structural risk regimes rather than price direction or momentum.
Availability and coverage
Regular Turbulence Index readings focus on the S&P500 but the supesets als provide insigth for the specific asset classes. Markets and integratesd within our broader state-of-the-market and risk monitoring frameworks.