Collateral Dispute, Downgrade, and Wrong-Way Risk at Arclight
Arclight Bank has a seven-year, $600m notional interest rate swap with Halden Energy, a single-A rated independent producer. The swap is deeply in-the-money to Arclight: mark-to-market is $48m. The CSA has a $10m threshold, $1m minimum transfer amount, monthly collateral posting, and cash-only collateral; $35m is currently held. Halden is downgraded to BBB and its credit spread widens by 140bp. On the monthly call, Halden disputes Arclight's valuation, claiming a $4m difference because Arclight uses a different SOFR curve. Halden also has a $120m undrawn revolving credit facility from Arclight and Arclight holds $80m of Halden bonds in its banking book. A separate commodity swap requires Halden to pay Arclight if oil falls below $65; oil is at $68 and falling. Arclight's counterparty credit limit for Halden is $75m, measured as current exposure plus potential future exposure.
1. Calculate the current unsecured exposure and explain why the simple net figure may understate the credit risk.
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Current exposure is mark-to-market minus collateral held: $48m - $35m = $13m. On the contract terms, collateral required at a $48m exposure is $48m - $10m threshold = $38m, so Arclight is also $3m undercollateralized before the dispute. If Halden's $4m valuation is correct, mark-to-market is $44m, required collateral is $34m, and the $35m held is sufficient; the dispute therefore determines whether there is a collateral shortfall.
The simple $13m figure understates risk for several reasons. It excludes potential future exposure, which rises with volatility and with the remaining seven-year tenor. It ignores the $120m undrawn revolver, which Halden may draw if its liquidity worsens. It ignores the $80m of Halden bonds, whose value falls as credit deteriorates. It also ignores wrong-way risk from the commodity swap. The $75m limit may look comfortable against $13m current exposure, but current exposure plus a realistic PFE add-on, plus the revolver and bond exposures, consumes far more headroom.
2. Analyse the wrong-way risk in the relationship. Which exposures are most correlated with Halden's credit quality?
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Wrong-way risk arises when exposure to a counterparty increases as the counterparty's credit quality deteriorates. The commodity swap is the clearest example: Halden pays Arclight if oil falls below $65, and oil is at $68 and falling. As oil declines, Arclight's mark-to-market exposure rises at the same time that Halden's revenue and credit quality weaken. That is specific wrong-way risk, not a generic correlation assumption.
The $80m bond holding and the $120m undrawn revolver reinforce the same direction. A deterioration in Halden's credit lowers the bond value and increases the likelihood that Halden draws the facility. The interest rate swap is less obviously wrong-way, but the downgrade and spread widening have already increased CVA and collateral risk. Cash collateral is a mitigant, but the $10m threshold, $1m MTA, and monthly posting leave a gap, and a downgrade may trigger additional collateral or termination rights under the CSA. The aggregate relationship is concentrated in one energy obligor and should be managed as a single correlated exposure, not as separate product silos.
3. Recommend actions for the collateral dispute, the credit limit, and the CSA.
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First, resolve the valuation dispute through an independent curve reconciliation. Arclight should document its SOFR curve, agree a fallback source, and issue a collateral call for the undisputed amount immediately; withholding the entire call because of a $4m dispute is not prudent.
Second, escalate to the credit committee. Suspend new draws under the $120m revolver and any new commodity hedging until the exposure is re-approved. Review the $80m bond position for hedging or reduction. Set a specific wrong-way limit for the energy sector and for Halden.
Third, renegotiate the CSA: lower the threshold, move to daily posting, add initial margin, and include a downgrade trigger. Consider novation or a credit derivative to hedge CVA, and price the CVA into new trades. Monitor the oil trigger at $65 closely and run a stress case in which oil falls to $55 while Halden's spread widens further. Report the aggregate exposure and the wrong-way analysis to the risk committee, with a clear limit and remediation plan.