Greece has secured a London High Court ruling confirming its legal right to repurchase GDP-linked securities tied to its 2012 sovereign debt restructuring, advancing Athens toward resolving a final chapter of its debt crisis.

The securities—due to mature in 2042—were issued during a €62bn debt restructuring, the largest ever by a sovereign borrower. The case, which followed a two-day trial, centered on whether Greece correctly exercised its contractual repurchase option and calculated the €252.28 redemption price per 1,000 securities using Greek central bank market data. Greece’s Public Debt Management Agency director, Dimitris Tsakonas, welcomed the decision, stating it confirms Greece’s adherence to contractual frameworks and provides clarity for market participants.

The ruling addresses complexities tied to GDP warrants, securities that link payouts to economic growth and have historically caused disputes. These instruments, popularized since the late 1990s to facilitate debt restructuring, have faced criticism for lopsided terms and statistical confusion. Recent examples include Ukraine restructuring $2.6bn worth of warrants and Argentina facing a €1.6bn claim from holders of 2010 warrants. Investors and governments have since sought clearer alternatives, like macro-linked bonds, to avoid similar legal and market uncertainties.

This decision brings resolution to a contentious issue for Greece, reinforcing legal precedents for GDP-warrant repurchases and providing clarity to market participants, preventing further disputes over contractual obligations in sovereign debt restructuring.