Underwater: Strategic Trading and Risk Management in Bank Securities Portfolios

Andreas Fuster, Teodora Paligorova and James I. Vickery
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Andreas Fuster: École Polytechnique Fédérale de Lausanne (EPFL); Swiss Finance Institute; Centre for Economic Policy Research (CEPR)
Teodora Paligorova: Board of Governors of the Federal Reserve System
James I. Vickery: Federal Reserve Bank of Philadelphia

No 26-06, Swiss Finance Institute Research Paper Series from Swiss Finance Institute

Abstract: We use bond-level data to study how US banks managed securities portfolio risk during the 2022–23 interest rate surge. Rising yields lengthened the effective duration of callable bonds (especially agency MBS) and triggered deposit outflows. Exposed banks reduced both the volume and duration of bond purchases, but rarely sold existing bonds and did not expand qualified accounting hedges. Two frictions constrain adjustment: first, banks systematically avoid realizing losses, especially banks that exclude unrealized losses from regulatory capital. Second, hedging capacity is limited by fixed costs and callable bond complexity. Instead, banks reduced measured exposure by classifying high-risk bonds as held-to-maturity.

Keywords: securities; bank; capital regulation; interest-rate risk; trading; hedging (search for similar items in EconPapers)
JEL-codes: G11 G21 G23 G28 (search for similar items in EconPapers)
Pages: 100 pages
Date: 2026-01
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Persistent link: https://EconPapers.repec.org/RePEc:chf:rpseri:rp2606

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