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Moody's Long-Term Rating Definitions:
Aaa:  
Obligations rated Aaa are judged to be of the highest quality, with minimal credit risk.
Aa:    Obligations rated Aa are judged to be of high quality and are subject to very low credit risk.
A:      Obligations rated A are considered upper-medium grade and are subject to low credit risk.
Baa:  Obligations rated Baa are subject to moderate credit risk.  they are considered medium-grade and as such may possess certain speculative characteristics.
Ba:    Obligations rated Ba are judged to have speculative elements and are subject to substantial credit risk.
B:      Obligations rated B are considered speculative and are subject to high credit risk.
Caa:  Obligations rated Caa are judged to be of poor standing and are subject to very high credit risk.
Ca:    Obligations rated Ca are highly speculative and are likely in, or very near, default, with some prospect of recovery of principal and interest.
C:      Obligations rated C are the lowest rated class of bonds and are typically in default, with little prospect for recovery of principal or interest.

Note:
Moody's appends numerical modifiers 1, 2, and 3 to each generic rating category; the modifier 1 indicates that the obligation ranks in the higher end of its generic rating category; the modifier 2 indicates a mid-range ranking; and the modifier 3 indicates a ranking in the lower and of that generic rating category.

Moody's Municipal Long-Term Rating Definitions:
Aaa:  Issuers or issues rated Aaa demonstrate the strongest creditworthiness relative to other US municipal or tax-exempt issuers or issues.
Aa:    Issuers or issues rated Aa demonstrate very strong creditworthiness relative to other US municipal or tax-exempt issuers or issues..
A:      Issuers or issues rated A present above-average creditworthiness relative to other US municipal or tax-exempt issuers or issues.
Baa:  Issuers or issues rated Baa represent average creditworthiness relative to other US municipal or tax-exempt issuers or issues.
Ba:    
Issuers or issues rated Ba demonstrate below-average creditworthiness relative to other US municipal or tax-expert issuers or issues.
B:      
Issuers or issues rated B demonstrate weak creditworthiness relative to other US municipal or tax-expert issuers or issues.
Caa:  Issuers or issues rated Caa demonstrate very weak creditworthiness relative to other US municipal or tax-expert issuers or issues..
Ca:    
Issuers or issues rated Ca demonstrate extremely weak creditworthiness relative to other US municipal or tax-expert issuers or issues..
C:      Issuers or issues rated C demonstrate the weakest creditworthiness relative to other US municipal or tax-expert issuers or issues.

Note: Moody's appends numerical modifiers 1, 2, and 3 to each generic rating category; the modifier 1 indicates that the obligation ranks in the higher end of its generic rating category; the modifier 2 indicates a mid-range ranking; and the modifier 3 indicates a ranking in the lower and of that generic rating category.

Moody's Short-Term Rating Definitions:
MIG 1:  This designation denotes superior credit quality.  Excellent protection is afforded by established cash flows, highly reliable liquidity support, or demonstrated broad-based access to the market for refinancing.
MIG 2:  This designation denotes strong credit quality.  Margins of protection are ample, although not as large as in the preceding group.
MIG 3:  This designation denotes acceptable credit quality.  Liquidity and cash-flow protection may be narrow, and market access for refinancing is likely to be less well-established.
SG:  This designation denotes speculative-grade credit quality.  Debt instruments in this category may lack sufficient margins of protection.


Moody's Demand Obligation Rating Definitions:
VMIG 1:  This designation denotes superior credit quality.  Excellent protection is afforded by the superior short-term credit strength of the liquidity provider and structural and legal protections that ensure the timely payment of purchase price upon demand.
VMIG 2:  This designation denotes strong credit quality.  Good protection is afforded by the strong short-term credit strength of the liquidity provider and structural and legal protections that ensure the timely payment of purchase price upon demand.
VMIG 3:  This designation denotes strong credit quality.  Adequate protection is afforded by the satisfactory short-term credit strength of the liquidity provider and structural and legal protections that ensure the timely payment of purchase price upon demand.
SG:  This designation denotes speculative-grade credit quality.  Demand features rated in this category may be supported by a liquidity provider that does not have an investment grade short-term rating or may lack the structural and/or legal protections necessary to ensure the timely payment of purchase price upon demand.

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