Analyzing Volatility Dynamics of US-Dollar-Backed Stablecoins

A research paper titled An econometric investigation on the stability of stablecoins: are these coins stable or is their stability just a flip of the coin? has challenged the assumption of inherent stability among US-dollar-backed stablecoins. The study utilizes a multilevel econometric framework to analyze how these assets respond to macrofinancial shocks, including changes in monetary policy, market uncertainty, and cryptocurrency volatility.

The investigation reveals a heterogeneous landscape among stablecoins, demonstrating that different assets exhibit varying levels of resilience when faced with external disturbances. The research employs a combination of generalized autoregressive conditional heteroscedasticity (GARCH), structural vector autoregression (SVAR), and time-varying parameter vector autoregression (TVP-VAR) models to reach these conclusions.

Variations in Asset Resilience

The findings indicate that not all USD-backed stablecoins react to market stress in the same manner. Specifically, the research identifies that USD Coin and TrueUSD are highly sensitive to external disturbances.

In contrast, the study found that USD Tether and MakerDAO’s DAI remained relatively more resilient during the analyzed periods of volatility.

Systemic Risk and Market Integration

The paper notes that while stablecoins primarily serve to absorb volatility, they become more connected to systemic risk during periods of crisis. This suggests that the role of stablecoins shifts when the broader financial environment faces significant stress.

Frequency-domain analysis conducted as part of the research shows that short-term spillovers are the dominant factor during stress events. The data indicates that long-term integration between these assets and traditional finance has increased since 2021.

Implications for Regulation

The researchers argue that the growing ties between stablecoins and traditional finance, combined with the varying sensitivity of different coins, underscore a need for tailored regulation. The study suggests that ongoing monitoring is necessary to mitigate systemic vulnerabilities within the financial ecosystem.

The core thesis of the work challenges the industry’s general assumption that these coins possess inherent stability, suggesting instead that their stability is subject to the dynamics of the macrofinancial environment.