A Blessing in Disguise? DeFi Exploits and Short-Horizon Responses in U.S. Commercial Paper Spreads

Paper: arXiv 2601.08263

Authors: Tingyi Lin

Abstract

Do vulnerabilities in Decentralized Finance (DeFi) destabilize traditional short-term funding markets? While the prevailing Contagion Hypothesis'' posits that stablecoin reserve liquidations may transmit distress to traditional markets through fire-sale pressure, we document a short-horizon Flight-to-Quality’’ pattern in the opposite direction. In the wake of major DeFi exploits, spreads on 3-month AA-rated commercial paper (CP) tend to narrow rather than widen. We interpret this pattern as consistent with a ``liquidity-recycling’’ channel: capital leaving DeFi may be re-intermediated into traditional cash-management markets, with regulatory segmentation under SEC Rule 2a-7 making prime-eligible paper a plausible marginal destination. Because we do not directly observe daily fund-level routing into prime money market funds, this mechanism is inferred from pricing patterns and monthly holdings evidence rather than directly identified. The result is specific to exploit-driven operational shocks, this U.S. CP spread, and short event windows.

Complexity vs Empirical Score

• Math Complexity: 5.5/10
• Empirical Rigor: 7.5/10
• Quadrant: Holy Grail — high math complexity, high empirical rigor

Why this score: The paper provides a novel empirical perspective countering the prevailing DeFi contagion hypothesis by identifying a short-horizon flight-to-quality effect into commercial paper spreads. It combines solid empirical methodologies (Jordà local projections, granular-IV design) with theoretical stylized frameworks to explain the underlying liquidity-recycling mechanism.

Research Flowchart

  flowchart TD
    A["Research Question:<br>Do DeFi exploits destabilize U.S. Commercial Paper (CP) markets?"] --> B["Data Inputs:<br>DeFi exploit events, 3M AA CP spreads, & monthly fund holdings"]
    B --> C["Event Study Methodology:<br>Analyze short-horizon CP spread responses around major exploits"]
    C --> D{"Observed Outcome"}
    D -- "Contagion (Widening Spreads)" --> E["Rejected: Fire-sale pressure"]
    D -- "Flight-to-Quality (Narrowing Spreads)" --> F["Confirmed: Liquidity Recycling"]
    F --> G["Key Finding:<br>DeFi capital re-intermediates into traditional short-term paper (SEC Rule 2a-7)"]