## Notes to Consolidated Financial Statements - (Continued) 

## Radian Group Inc. 

TruPs CDOs —Our TruPs transactions are CDS on CDOs where the collateral consists primarily of deeply subordinated securities issued by banks, insurance companies, real estate investment trusts and other financial institutions whose individual spreads are not observable. In each case, we provide credit protection on a specific tranche of each CDO. To determine fair value for these transactions, we use a discounted cash flow valuation approach that captures the credit characteristics of each transaction. We estimate projected claims based on our internal credit analysis, which is based on the current performance of each underlying reference obligation. The present value of the expected cash flows to the TruPs transaction is then determined using a discount rate derived from the observed market pricing for a TruPs transaction with similar characteristics. The present value of the insured cash flows is determined using a discount rate that is equal to our CDS rate plus a risk-free rate. 

For certain of our TruPs transactions, our counterparties may require that we pay them the outstanding par on the underlying TruPs bond if an event of default has occurred and remains outstanding as of the termination date of our CDS coverage (a “conditional liquidity claim”). For these transactions, an additional fair value adjustment is made. To calculate this adjustment, a probability that we will be required to pay a conditional liquidity claim is assigned based on our internal cash flow projections. A discounted cash flow valuation is also performed for this scenario where we are required to make a conditional liquidity claim. The fair value is set equal to the probability weighted average of the valuations from the two scenarios: one in which our counterparty makes a conditional liquidity claim and one in which the claim is not made. 

CDOs of ABS, including Related VIE Liabilities —The fair value amounts for our CDOs of ABS transactions are derived using standard market indices and discounted cash flows, to the extent expected losses can be estimated. 

Fair value for our CDO of ABS transaction was estimated using a discounted cash flow analysis. We estimated cash flows for the transaction based on our internal credit analysis, which was based on the current performance of each security . The estimated fair value of the underlying collateral securities was determined using either observed market transactions, including broker-dealer quotes and actual trade activity on similar bonds, or expected cash flows discounted using the yield observed on similar bonds. The present value of the insured cash flows (which represented the VIE debt) was determined using a risk-free rate that is applied to the cash flows adjusted for Radian’ s non-performance risk. 

Prior to the termination of the contract in the second quarter of 2012, the VIE debt and derivative liability within our CDO of ABS transaction were consolidated and categorized in Level III of the fair value hierarchy . The fair value of the VIE debt and other liabilities exceeded the net value of the assets of the VIE; however, because our fair value estimate of the VIE debt incorporated a discount rate that is based on our CDS spread, the fair value was substantially less than our expected ultimate claim payments. 

CDOs of CMBS —The fair premium amounts for our CDOs of CMBS transactions for a typical market participant are derived first by observing the spreads of the CMBX indices that match the underlying reference obligations of our transactions. A mezzanine tranche, which represents our insured tranche, is then priced through a standard CDO model. The CMBX indices represent standardized lists of CMBS reference obligations. A different CMBX index exists for dif ferent types of underlying referenced obligations based on vintages and credit rating. For each of our CDO of CMBS transactions, we use the CMBX index that most directly correlates to our transaction with respect to vintage and credit rating. Because the observable CMBS indices do not have a similar mezzanine tranche, we use an internal CDO pricing model in order to adjust fair value for this structural feature. A standard CDO pricing model was calibrated to establish the market pricing at inception. This CDO pricing model is then applied to the current valuation period to derive the fair premium for the mezzanine tranche. The typical fair premium amount represents the estimated fair value of the expected future fair premiums determined by using a discount rate equal to the CDS spread of a typical market participant plus a risk-free rate. 

All Other Non-Corporate CDOs and Other Derivative Transactions —For all of our other non-corporate CDO and other derivative transactions, observed prices and market indices are not available. As a result, we utilize an internal model that estimates fair premium. The fair premium amount is calculated such that the expected profit (fair premium amount net of expected losses and other expenses) is proportional to an internally-developed risk-based capital amount. Expected losses and our internally developed risk-based capital amounts are projected by our model using the internal credit rating, term and current par outstanding for each transaction. 

