Hedging munis — Easier said than done

The Bond Buyer - May 28, 2019

Hedging a muni portfolio which contains bonds priced close to or below par is surprisingly complicated. First, the tax-aware effective duration of such bonds is considerably longer than indicated by conventional OAS models, reflecting the market impact of taxes on price changes not captured by such models. Additionally, tax-aware KRDs may not sum up to the effective duration, and therefore may need to be adjusted to determine the appropriate hedge ratios.