Investments

We maintain an investment portfolio of various holdings, types, and maturities. See Note 6 to the Consolidated Financial Statements. As of July 28, 2007, these securities are classified as available-for-sale and consequently are recorded in the Consolidated Balance Sheets at fair value with unrealized gains or losses, to the extent unhedged, reported as a separate component of accumulated other comprehensive income, net of tax.

Fixed Income Securities

At any time, a sharp rise in interest rates could have a material adverse impact on the fair value of our fixed income investment portfolio. Conversely, declines in interest rates could have a material adverse impact on interest income for our investment portfolio. Our fixed income instruments are not leveraged as of July 28, 2007, and are held for purposes other than trading. The following table presents the hypothetical fair values of fixed income securities, including the effects of the interest rate swaps discussed further under “Interest Rate Derivatives” below, as a result of selected potential market decreases and increases in interest rates. Market changes reflect immediate hypothetical parallel shifts in the yield curve of plus or minus 50 basis points (“BPS”), 100 BPS, and 150 BPS. The hypothetical fair values as of July 28, 2007 are as follows (in millions):

Publicly Traded Equity Securities

The values of our equity investments in several publicly traded companies are subject to market price volatility. The following table presents the hypothetical fair values of publicly traded equity securities as a result of selected potential decreases and increases in the price of each equity security in the portfolio, excluding hedged equity securities. Potential fluctuations in the price of each equity security in the portfolio of plus or minus 10%, 20%, and 30% were selected based on potential near-term changes in those security prices. The hypothetical fair values as of July 28, 2007 are as follows (in millions):

Our equity portfolio consists of securities with characteristics that most closely match the Standard & Poor’s 500 Index or NASDAQ Composite Index. These equity securities are held for purposes other than trading. There were no impairment charges on publicly traded equity securities in fiscal 2007 or fiscal 2006 and the amount of impairment charges in fiscal 2005 was not material. The impairment charge was related to the decline in the fair value of certain publicly traded equity securities below their cost basis that were judged to be other-than-temporary.

Investments in Privately Held Companies

We have invested in privately held companies, some of which are in the startup or development stages. These investments are inherently risky because the markets for the technologies or products these companies are developing are typically in the early stages and may never materialize. We could lose our entire initial investment in these companies. These investments are primarily carried at cost, which as of July 28, 2007 was $643 million, compared with $574 million at July 29, 2006, and are recorded in other assets. Our impairment charges on investments in privately held companies were $22 million, $15 million, and $39 million during fiscal 2007, 2006, and 2005, respectively.

Our evaluation of investments in private and public companies is based on the fundamentals of the businesses, including, among other factors, the nature of their technologies and potential for financial return.

Long-Term Debt

At any time, a sharp fall in interest rates could have a material adverse impact on the fair value of $6.0 billion of our fixed-rate debt. Conversely, a sharp rise in interest rates could have a material favorable impact. We have entered into $6.0 billion notional amount of interest rate swaps designated as fair value hedges, and gains and losses in the fair value of these swaps offset changes in the fair value of the fixed-rate debt. In effect, these swaps convert the fixed interest rates to floating interest rates based on LIBOR. A sharp change in rates would not have a material impact on the fair value of our $500 million variable-rate debt.

A sharp rise in short-term interest rates could have a material adverse impact on interest expense, while a sharp fall in short-term rates could have a material favorable impact. To mitigate these impacts, we presently invest a portion of our interest-bearing assets in instruments with similar interest rate characteristics as the swapped debt.

Derivative Instruments

Foreign Currency Derivatives

We enter into foreign exchange forward contracts to reduce the short-term effects of foreign currency fluctuations on receivables, investments, and payables, primarily denominated in Australian, Canadian, Japanese, and several European currencies, including the euro and British pound. Our market risks associated with our foreign currency receivables, investments, and payables relate primarily to variances from our forecasted foreign currency transactions and balances.

The impact of foreign currency fluctuations on sales has not been material because our sales are primarily denominated in U.S. dollars. Approximately 75% of our operating expenses are U.S.-dollar denominated. To reduce variability in operating expenses caused by the remaining non-U.S.-dollar denominated operating expenses, we hedge certain foreign currency forecasted transactions with currency options and forward contracts with maturities up to 18 months. These hedging programs are not designed to provide foreign currency protection over longer time horizons. In designing a specific hedging approach, we consider several factors, including offsetting exposures, significance of exposures, costs associated with entering into a particular hedge instrument, and potential effectiveness of the hedge. The gains and losses on foreign exchange contracts mitigate the variability in operating expenses associated with currency movements. Primarily because of our limited currency exposure to date, the effect of foreign currency fluctuations has not been material to our Consolidated Financial Statements. The effect of foreign currency fluctuations, net of hedging, on the increase in total research and development, sales and marketing, and general and administrative expenses was not material in fiscal 2007.

Foreign exchange forward and option contracts as of July 28, 2007 and July 29, 2006 are summarized as follows (in millions):

Our foreign exchange forward contracts related to current assets and liabilities generally range from one to three months in original maturity. Additionally, we have entered into foreign exchange forward contracts related to long-term customer financings with maturities of up to two years. The foreign exchange forward contracts related to investments generally have maturities of less than 18 months. We do not enter into foreign exchange forward or option contracts for trading purposes. We do not expect gains or losses on these derivative instruments to have a material impact on our financial results. See Note 8 to the Consolidated Financial Statements.

Interest Rate Derivatives

Our interest rate derivatives are summarized as follows (in millions):

Our primary objective for holding fixed income securities is to achieve an appropriate investment return consistent with preserving principal and managing risk. To realize these objectives, we may utilize interest rate swaps or other derivatives designated as fair value or cash flow hedges.

We have entered into $1.0 billion of interest rate swaps designated as fair value hedges of our investment portfolio. Under these interest rate swap contracts, we make fixed-rate interest payments and receive interest payments based on LIBOR. The effect of these swaps is to convert fixed-rate returns to floating-rate returns based on LIBOR for a portion of our fixed income portfolio. The gains and losses related to changes in the value of the interest rate swaps are included in other income, net, and offset the changes in fair value of the underlying hedged investment. The fair values of the interest rate swaps designated as hedges of our investments are reflected in prepaid expenses and other current assets.

In conjunction with our issuance of fixed-rate senior notes in February 2006, we entered into $6.0 billion of interest rate swaps designated as fair value hedges of our fixed-rate debt. Under these interest rate swap contracts, we receive fixed-rate interest payments and make interest payments based on LIBOR. The effect of these swaps is to convert fixed-rate interest expense to floating-rate interest expense based on LIBOR. The gains and losses related to changes in the value of the interest rate swaps are included in other income, net, and offset the changes in fair value of the underlying debt. The fair values of the interest rate swaps designated as hedges of our debt are reflected in other long-term liabilities.

Equity Derivatives

Our equity derivatives are summarized as follows (in millions):

We maintain a portfolio of publicly traded equity securities which are subject to price risk. We may hold equity securities for strategic purposes or to diversify our overall investment portfolio. To manage our exposure to changes in the fair value of certain equity securities, we may enter into equity derivatives, including forward sale and option agreements. As of July 28, 2007, we have entered into forward sale agreements on certain publicly traded equity securities designated as fair value hedges. The gains and losses due to changes in the value of the hedging instruments are included in other income, net, and offset the change in the fair value of the underlying hedged investment. The fair values of the equity derivatives are reflected in prepaid expenses and other current assets and other accrued liabilities.