please summarize the following passage into under 150 wordsP37 Our available-for-sale securities comprise a diversified portfolio consisting mainly of investment-grade debt securities The primary obje

The company's available-for-sale securities portfolio consists mainly of investment-grade debt securities with the objective of preserving capital and liquidity. They are recorded on the balance sheets at fair value, with unrealized gains and losses reported under accumulated other comprehensive income. The company does not hedge the interest rate exposure on their investments and performed a sensitivity analysis based on a 100 basis point change in the underlying interest rate. The analysis showed that the change would not have a significant impact on the fair value of the securities. The company evaluates available-for-sale securities for other-than-temporary impairment quarterly and charges unrealized losses against net earnings when a decline in fair value is determined to be other than temporary. Derivative instruments that qualify as cash flow hedges have their gains or losses reported under other comprehensive income and are subsequently reclassified into net earnings when the hedged exposure affects net earnings. Comprehensive income includes all changes in equity during the period, except those resulting from transactions with shareholders.