QML Solutions
QML SolutionsQuant-Driven Market Insights.
| Platform |  | Pricing | Only free issues | Publishes | Weekly |
|---|---|---|---|---|---|
| Issues | 13 | Subscribers | Read | qmlsolutions.substack.com |
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Latest Issues
Recent posts by this newsletter. Browse the email archive.
Rising Stars in a Tighter Credit Cycle
* Against a backdrop of higher-for-longer rates and elevated policy uncertainty, US rising star volume slowed in 2024 and 2025, falling below the long-term average of $34 bn after averaging well above $50 bn per year between 2021 and 2023.
Fallen Angels Part 2: Forced Selling and Recovery
* Spread widening and negative returns are similar across all fallen angels prior to downgrade, indicating forced selling rather than fundamental differentiation.
Fallen Angels Part 1 – The BBB Companies Most at Risk of a Downgrade to High Yield
* Annual downgrades of US BBB-rated companies to high yield (fallen angels) have increased in 2025 from cyclical lows, and will soon rise above the historical average.
Equity Vulnerability Scores: Q3 2025 Update
* Three months after publishing our framework for assessing equity vulnerability across the S&P 500, we revisit our scoring model to track how risk profiles have shifted across sectors and companies.
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