A Better Newspaper

## Overview US state and local government debt ("munis") posted its worst monthly performance in nearly two decades in September/October 2026, driven by inflation concerns, the ongoing US-Iran conflict, and fears of further interest-rate hikes (Bloomberg, October 1). ## Key Details - The selloff is described as the worst since the Lehman Brothers collapse in 2008 (Bloomberg, October 1). - Contributing factors reportedly include: inflation concerns, geopolitical risk from the US-Iran conflict, and fears of interest-rate hikes (Bloomberg, October 1). - This occurs alongside a broader bond market stress episode, including Treasury yields hitting multi-decade highs and European fiscal concerns (France) driving haven flows into Treasuries (Bloomberg, October 1). ## Context This sits within a wider fixed-income narrative of 2026: 10-year Treasury yields reaching 24-year highs, a documented 'structural shift' toward sustained 5%+ yields, and growing private muni-bond account activity (e.g., JPMorgan's muni-bond push). Munis are typically viewed as a haven/stable asset class, so a Lehman-scale selloff signals broader credit market stress spreading beyond corporate debt. ## Why It Matters Municipal bonds fund US infrastructure, schools, and local governments. A crisis in this market has direct implications for state/local government borrowing costs, public project financing, and retail investor portfolios (munis are heavily held by individual investors for tax advantages). This is a market to track closely given interlocking pressures from Fed policy, geopolitical shocks, and fiscal stress narratives already tracked (Treasury yields, Fed rate policy, European fiscal woes). ## Developing Story Likely to generate continued coverage tied to Fed policy decisions, further Treasury yield movements, and any state/local fiscal distress signals.