Credit rating agencies are so slow that by the time they warn you a country is going broke, the disaster is already ancient history.
SSRN · March 13, 2026 · 6356518
Why it matters
By testing a new monetary indicator against historical crises in Ghana, Turkey, and Egypt, researchers found that sovereign credit ratings are 'lagging indicators' that fail to signal trouble until 6 to 20 months after the math shows a crash is coming. This creates a massive 'structural window' where institutional investors believe a market is safe while it is actually in a tailspin.
From the abstract
<p>The three-condition monetary leading-indicator framework developed in Paper 1 generalises across frontier-market currency episodes. Applied to Ghana (2022), Turkey (2021–2023), Egypt (2022–2024), and Zambia (2019–2020), it identifies elevated crisis risk 6 to 20 months before sovereign rating agency downgrades, while generating no signal for South Africa — a result that supports the framework's discriminatory power.</p> <p>Development finance institutions typically rely on sovereign credit ra