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Annual Report 2005 - Chubb Group of Insurance Companies

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increases the market value <strong>of</strong> existing investments, creating the opportunity for realized investment<br />

gains on disposition.<br />

The unrealized appreciation before tax <strong>of</strong> investments carried at market value, which includes<br />

Ñxed maturities classiÑed as available-for-sale and equity securities, was $478 million, $961 million and<br />

$1,036 million at December 31, <strong>2005</strong>, 2004 and 2003, respectively. Such unrealized appreciation is<br />

reÖected in a separate component <strong>of</strong> other comprehensive income, net <strong>of</strong> applicable deferred income<br />

tax.<br />

The unrealized market appreciation before tax <strong>of</strong> those Ñxed maturities carried at amortized cost<br />

was $11 million, $21 million and $35 million at December 31, <strong>2005</strong>, 2004 and 2003, respectively. Such<br />

unrealized appreciation was not reÖected in the consolidated Ñnancial statements.<br />

Changes in unrealized market appreciation or depreciation <strong>of</strong> Ñxed maturities were due primarily<br />

to Öuctuations in interest rates.<br />

Item 7A. Quantitative and Qualitative Disclosures About Market Risk<br />

Market risk represents the potential for loss due to adverse changes in the fair value <strong>of</strong> Ñnancial<br />

instruments. Our primary exposure to market risks relates to our investment portfolio, which is<br />

sensitive to changes in interest rates and, to a lesser extent, credit quality, prepayment, foreign<br />

currency exchange rates and equity prices. We also have exposure to market risks through our debt<br />

obligations. Analytical tools and monitoring systems are in place to assess each <strong>of</strong> these elements <strong>of</strong><br />

market risk.<br />

Investment Portfolio<br />

Interest rate risk is the price sensitivity <strong>of</strong> a security that promises a Ñxed return to changes in<br />

interest rates. Changes in market interest rates directly aÅect the market value <strong>of</strong> our Ñxed income<br />

securities. We view the potential changes in price <strong>of</strong> our Ñxed income investments within the overall<br />

context <strong>of</strong> asset and liability management. Our actuaries estimate the payout pattern <strong>of</strong> our liabilities,<br />

primarily our property and casualty loss reserves, to determine their duration, which is the present<br />

value <strong>of</strong> the weighted average payments expressed in years. We set duration targets for our Ñxed<br />

income investment portfolios after consideration <strong>of</strong> the duration <strong>of</strong> these liabilities and other factors,<br />

which we believe mitigates the overall eÅect <strong>of</strong> interest rate risk for the Corporation.<br />

The following table provides information about our Ñxed maturity investments, which are<br />

sensitive to changes in interest rates. The table presents cash Öows <strong>of</strong> principal amounts and related<br />

weighted average interest rates by expected maturity dates at December 31, <strong>2005</strong> and 2004. The cash<br />

Öows are based on the earlier <strong>of</strong> the call date or the maturity date or, for mortgage-backed securities,<br />

expected payment patterns. Actual cash Öows could diÅer from the expected amounts.<br />

At December 31, <strong>2005</strong><br />

Total<br />

Estimated<br />

There- Amortized Market<br />

2006 2007 2008 2009 2010 after Cost Value<br />

(in millions)<br />

Tax-exempt ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ $ 742 $ 715 $ 942 $1,031 $1,092 $11,131 $15,653 $15,965<br />

Average interest rate ÏÏÏÏÏÏÏÏ 5.5% 5.3% 5.1% 5.1% 4.8% 4.1% Ì Ì<br />

Taxable Ì other than mortgagebacked<br />

securities ÏÏÏÏÏÏÏÏÏÏÏÏ 912 1,261 1,415 1,659 1,257 3,662 10,166 10,267<br />

Average interest rate ÏÏÏÏÏÏÏÏ 4.6% 4.5% 4.6% 4.4% 4.8% 5.0% Ì Ì<br />

Mortgage-backed securitiesÏÏÏÏÏ 411 446 704 579 539 1,671 4,350 4,302<br />

Average interest rate ÏÏÏÏÏÏÏÏ 4.8% 4.6% 5.2% 4.7% 4.6% 4.9% Ì Ì<br />

TotalÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ $2,065 $2,422 $3,061 $3,269 $2,888 $16,464 $30,169 $30,534<br />

57

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