3 unchanged sentences
The primary objective of our investment activities is to preserve principal.
−Removed: adhere to an investment policy that requires us to limit amounts invested in securities based on credit rating, maturity, industry group and investment type and issuer, except for securities issued by the U.S.
+Added: We adhere to an investment policy that requires us to limit amounts invested in securities based on credit rating, maturity, industry group and investment type and issuer, except for securities issued by the U.S.
We do not have any derivative financial instruments or foreign currency instruments.
−Removed: At September 30, 2020, we had $645.8 million invested in short-term marketable securities with a maturity date of less than one year.
+Added: As of March 31, 2021, we had $472.2 million invested in marketable securities with a maturity date of less than two years.
As such we believe that we are not exposed to any material market risk.
−Removed: If interest rates had varied by 1% in the three months ended September 30, 2020, the fair value of our investment portfolio would increase or decrease by approximately $2.2 million.
+Added: If interest rates had varied by 1% in the year ended March 31, 2021, the fair value of our investment portfolio would increase or decrease by approximately $1.9 million.
Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.