Pendle triggers Morpho liquidations after $320K SY-reUSD burst
On Aug. 25, a single wallet executed 11 rapid trades on Pendle that converted about $320,000 worth of SY-reUSD into 9.5M+ YT-reUSD within 9 minutes. The surge pushed the implied yield for the PT-reUSD/YT-reUSD market above 20%, and temporarily dropped PT-reUSD by ~3%.
Because borrowers on Morpho used PT-reUSD as collateral, the PT price move quickly pushed positions below liquidation thresholds. With loan-to-value (LTV) around 91.5% pre-incident, even a ~3% dip was enough to activate Morpho’s automated liquidation engine.
Results: 33 liquidation events across roughly 19–20 borrower positions. About 38M PT-reUSD collateral was seized. Liquidations repaid around $35.19M in USDC debt and about $960K in USDT debt, for total liquidated exposure of ~ $36.4M. A key point: no bad debt was created, so Morpho remained solvent.
Context and why this matters: Pendle’s USDC vault on Morpho (launched ~Aug. 4) had attracted $15M+ deposits, mostly into PT-reUSD markets. Pendle’s PT-reUSD oracle uses the lower of (1) a 15-minute market average and (2) a fixed discount curve (~6% annual discount). The fast trade sequence made the short averaging window vulnerable to price disruption, highlighting cross-protocol contagion risk: Pendle price distortions can cascade into Morpho liquidation cascades.
Neutral
Bearish pressure is possible in the short term because a rapid Pendle trade moved PT-reUSD by ~3%, triggering a ~$36.4M liquidation cascade on Morpho. That kind of event often causes traders to reassess collateral risk, reduce leverage, and temporarily widen risk premia.
However, the impact is not strictly bearish. The article notes no bad debt occurred, meaning Morpho stayed solvent—so systemic fear may fade faster than in past liquidation-driven insolvency scares. A similar pattern has played out in DeFi when collateral liquidations are contained by overcollateralization and liquidation mechanics (many historical lending protocols saw sharp cascades but limited long-term damage once solvency held).
Longer term, the key takeaway for traders is operational risk around oracle design. Pendle’s oracle uses a 15-minute average vs. a fixed discount curve; fast execution can distort the priced derivative (PT), which then propagates into another lending venue (Morpho). This may keep traders more cautious on derivative-backed collateral and encourage tighter risk controls, but it also provides a clear signal for monitoring oracle behavior and collateral LTV buffers.
Net: near-term volatility/caution (slightly bearish) but without bad debt and with clear solvency suggests a balanced, neutral market impact.