Bond Insurance

A customer wanting a municipal bond with credit enhancement to raise its rating should look for one that is:

1. A.Backed by nothingA bond backed by nothing is the weakest possible structure, which is the opposite of enhancement. Credit enhancement means adding a third party's promise on top of the issuer's own, and that is what lifts the rating.
2. B.Uninsured and unratedAn unrated bond has no rating for an enhancement to improve, and uninsured is the precise absence of the feature the customer is shopping for. Insurance from a third party is what allows a muni to carry a rating higher than the issuer could earn alone.
3. C.In defaultA bond already in default has failed to pay, placing it at the bottom of the credit scale. The request was for a feature that raises the rating, not for the security most likely to have lost one.
4. D.Insured by a bond insurerCorrect - insurance enhances the rating.

Why: Bond insurance (e.g., from a monoline insurer) can raise a muni's credit rating.

The Ashcombe Regional Bridge Authority issues revenue bonds carrying an unconditional guarantee of timely payment of principal and interest from a highly rated municipal bond insurer. The insured bonds are rated on the strength of the insurer. How should adviser Perrine Duchamp evaluate them?

1. A.The bonds carry a higher rating and therefore a lower yield than an equivalent uninsured bond, and she should still analyse the underlying obligor, because an insurer downgrade would leave the bonds trading on their underlying rating.Correct. Credit enhancement lowers the yield and adds a second credit, but the underlying rating still governs if the insurer weakens.
2. B.The insurance removes all investment risk from the bonds, so they may be treated as equivalent to short-term Treasury bills.Incorrect. Insurance addresses credit risk only. The bonds retain full interest rate risk and remain long-dated obligations.
3. C.Insured bonds yield more than comparable uninsured bonds, because investors must be compensated for relying on a third party.Incorrect and reversed. The enhanced rating REDUCES the yield investors demand, which is exactly why issuers buy the policy.
4. D.Because the insurer guarantees payment, the underlying rating of the authority becomes legally irrelevant and is no longer published.Incorrect. Underlying ratings continue to be assigned and monitored, and they govern how the bonds trade if the insurer is downgraded.

Why: Bond insurance is a form of credit enhancement. A third-party insurer guarantees timely payment of principal and interest, so the issue is rated on the insurer claims-paying strength, which is typically higher than the underlying obligor own rating. The economics are straightforward: the higher rating lowers the yield investors demand, and the issuer buys the policy because the interest saving over the life of the issue exceeds the premium. For the investor, the practical effect is a lower yield than an equivalent uninsured bond and a claim that now depends on two credits rather than one, since payment fails only if BOTH the authority and the insurer fail. That is genuine protection, but it is not a reason to stop analysing the underlying obligor. Insurers concentrate exposure across many issues, so a downgrade of the insurer can reprice a large number of bonds simultaneously, at which point an insured bond trades on the strength of its underlying rating. Prudent analysis therefore looks through the wrapper to the underlying rating and treats the insurance as a supplement to that analysis rather than a substitute for it.

A municipal issuer obtains BOND INSURANCE on a new issue. The primary market effect is:

1. A.Default becomes legally impossibleWrong-but-tempting. ISSUER default remains possible - the INSURER then pays (if able).
2. B.The bonds carry the insurer's higher rating, reducing the issuer's borrowing costCorrect. Enhanced ratings translate into lower yields.
3. C.The bonds become exempt from state taxation everywhereWrong. Insurance never alters tax treatment.
4. D.The bonds convert to general obligationsWrong. Security pledges never change via insurance.

Why: Credit enhancement transfers default protection to the insurer, typically earning higher ratings and lower borrowing costs; the enhancement's value tracks the insurer's own creditworthiness, as the financial crisis demonstrated. Citation: municipal bond insurance mechanics. Takeaway: insured bonds ride the insurer's rating - both up and down.