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2007 Annual Report - AIG.com

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American International Group, Inc. and Subsidiaries<br />

16. Fair Value of Financial Instruments<br />

Continued<br />

differences between the closing price of the exchange-traded<br />

derivatives and their underlying instruments.<br />

OTC derivatives are valued using market transactions and other<br />

market evidence whenever possible, including market-based inputs<br />

to models, model calibration to market clearing transactions,<br />

broker or dealer quotations or alternative pricing sources with<br />

reasonable levels of price transparency. When models are used,<br />

the selection of a particular model to value an OTC derivative<br />

depends on the contractual terms of, and specific risks inherent<br />

in, the instrument as well as the availability of pricing information<br />

in the market. <strong>AIG</strong> generally uses similar models to value similar<br />

instruments. Valuation models require a variety of inputs, includ-<br />

ing contractual terms, market prices and rates, yield curves, credit<br />

curves, measures of volatility, prepayment rates and correlations<br />

of such inputs. For OTC derivatives that trade in liquid markets,<br />

such as generic forwards, swaps and options, model inputs can<br />

generally be verified and model selection does not involve<br />

significant management judgment.<br />

Certain OTC derivatives trade in less liquid markets with<br />

limited pricing information, and the determination of fair value for<br />

these derivatives is inherently more difficult. When <strong>AIG</strong> does not<br />

have corroborating market evidence to support significant model<br />

inputs and cannot verify the model to market transactions,<br />

transaction price is initially used as the best estimate of fair<br />

value. Accordingly, when a pricing model is used to value such an<br />

instrument, the model is adjusted so that the model value at<br />

inception equals the transaction price. Subsequent to initial<br />

recognition, <strong>AIG</strong> updates valuation inputs when corroborated by<br />

evidence such as similar market transactions, third-party pricing<br />

services and/or broker or dealer quotations, or other empirical<br />

market data. When appropriate, valuations are adjusted for<br />

various factors such as liquidity, bid/offer spreads and credit<br />

considerations. Such adjustments are generally based on available<br />

market evidence. In the absence of such evidence, manage-<br />

ment’s best estimate is used.<br />

Mortgage and other loans receivable: When practical, the fair<br />

values of loans on real estate and collateral loans were estimated<br />

using discounted cash flow calculations based upon <strong>AIG</strong>’s current<br />

incremental lending rates for similar type loans. The fair values of<br />

the policy loans were not calculated as <strong>AIG</strong> believes it would have<br />

to expend excessive costs for the benefits derived.<br />

Finance receivables: Fair values were estimated using discounted<br />

cash flow calculations based upon the weighted average rates<br />

currently being offered for similar finance receivables.<br />

Securities lending invested collateral and securities lending payable:<br />

Securities lending collateral are floating rate fixed maturity<br />

securities recorded at fair value. Fair values were based upon<br />

quoted market prices or internally developed models consistent<br />

with the methodology for other fixed maturity securities. The<br />

contract values of securities lending payable approximate fair<br />

value as these obligations are short-term in nature.<br />

Spot <strong>com</strong>modities: Fair values were based on current market<br />

prices of reference spot futures contracts traded on exchanges.<br />

Cash, short-term investments, trade receivables, trade payables,<br />

securities purchased (sold) under agreements to resell (repur-<br />

chase), <strong>com</strong>mercial paper and extendible <strong>com</strong>mercial notes: The<br />

carrying values of these assets and liabilities approximate fair<br />

values because of the relatively short period of time between<br />

origination and expected realization.<br />

Other invested assets: Consisting principally of hedge funds and<br />

limited partnerships. Fair values are determined based on the net<br />

asset values provided by the general partner or manager of each<br />

investment. <strong>AIG</strong> obtains the fair value of its investments in limited<br />

partnerships and hedge funds from information provided by the general<br />

partner or manager of these investments, the accounts of which<br />

generally are audited on an annual basis. The transaction price is used<br />

as the best estimate of fair value at inception.<br />

Policyholders’ contract deposits: Fair values were estimated using<br />

discounted cash flow calculations based upon interest rates<br />

currently being offered for similar contracts with maturities<br />

consistent with those remaining for the contracts being valued.<br />

Securities and spot <strong>com</strong>modities sold but not yet purchased: The<br />

carrying amounts for the securities and spot <strong>com</strong>modities sold but not<br />

yet purchased approximate fair values. Fair values for securities and<br />

spot <strong>com</strong>modities sold short were based on current market prices.<br />

Trust deposits and deposits due to banks and other depositors:<br />

To the extent certain amounts are not demand deposits or<br />

certificates of deposit which mature in more than one year, fair<br />

values were not calculated as <strong>AIG</strong> believes it would have to<br />

expend excessive costs for the benefits derived.<br />

Commercial paper and extendible <strong>com</strong>mercial notes: The carrying<br />

amount approximates fair value.<br />

Long-term borrowings: When practical, the fair values of these<br />

obligations were estimated using discounted cash flow calculations<br />

based upon <strong>AIG</strong>’s current incremental borrowing rates for<br />

similar types of borrowings with maturities consistent with those<br />

remaining for the debt being valued.<br />

<strong>AIG</strong> <strong>2007</strong> Form 10-K 183

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