Item 7A. Quantitative and Qualitative Disclosures About Market Risk
Item 7A. Quantitative and Qualitative Disclosures About Market Risk.
Interest rate risk
Our cash, cash equivalents and restricted cash, consist primarily of interest-bearing accounts. Such interest-earning instruments carry a degree of interest rate risk. To minimize interest rate risk in the future, we intend to maintain our portfolio of cash equivalents in a variety of investment-grade securities, which may include commercial paper, money market funds, and government and non-government debt securities. Because of the short-term maturities of our cash, cash equivalents, restricted cash, and marketable securities, we do not believe that an increase in market rates would have any significant negative impact on the realized value of our investments. A one-eighth percent change in interest expense would have an annual impact of approximately $0.4 million on cash interest expense.
Foreign currency exchange risk
All of our revenue and a majority of our expense and capital purchasing activities for the year ended December 31, 2021 were transacted in U.S. dollars. As we expand our sales and operations internationally, we will be more exposed to changes in foreign exchange rates. Our international revenue is currently collected in U.S. dollars. In the future, as we expand into additional international jurisdictions, we expect that our international sales will be primarily denominated in U.S. dollars. If we decide in the future to denominate international sales in currencies other than the U.S. dollar, unfavorable movement in the exchange rates between the U.S. dollar and the currencies in which we conduct foreign sales could have an adverse impact on our revenue.
A portion of our operating expenses are incurred outside the United States and are denominated in foreign currencies, which are subject to fluctuations due to changes in foreign currency exchange rates. In particular, in our Australia and UK-based operations, we pay payroll and other expenses in Australian dollars and British pounds sterling, respectively. Our operating results and cash flows are, therefore, subject to fluctuations due to changes in foreign currency exchange rates. However, we believe that the exposure to foreign currency fluctuation from operating expenses is relatively small at this time as the related costs do not constitute a significant portion of our total expenses.
We currently do not hedge foreign currency exposure. We may in the future hedge our foreign currency exposure and may use currency forward contracts, currency options, and/or other common derivative financial instruments to reduce foreign currency risk. It is difficult to predict the effect future hedging activities would have on our operating results.
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Credit risk
Financial instruments that potentially subject us to concentrations of credit risk consist of cash and cash equivalents, restricted cash, and accounts receivable. Our investment policy limits investments to high credit quality securities issued by the U.S. government, U.S. government-sponsored agencies, and highly rated corporate securities, subject to certain concentration limits and restrictions on maturities. Our cash and cash equivalents and restricted cash are held by financial institutions that management believes are of high credit quality. Amounts on deposit may at times exceed FDIC insured limits. We have not experienced any losses on our deposits of cash and cash equivalents, and accounts are monitored by management to mitigate risk. We are exposed to credit risk in the event of default by the financial institutions holding our cash and cash equivalents or an event of default by the issuers of the corporate debt securities we hold.
Item 8. Financial Statements and Supplementary Data.
The information required by this item is incorporated by reference to the consolidated financial statements and accompanying notes set forth on pages F-1 through F-23 of this Annual Report on Form 10-K.
Item 9. Changes in and Disagreements With Accountants on Accounting and Financial Disclosure.
None.
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