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Investments - Short-Term | 6 Months Ended
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Apr. 30, 2023
Investments - Short-Term |
Investments - Short-Term | Note 5. Investments – Short-Term During the six months ended April 30, 2023, the Company invested $138.2 million to purchase U.S. Treasury Securities. $63.3 million of the U.S. Treasury Securities matured during the six months ended April 30, 2023. The U.S. Treasury Securities outstanding as of April 30, 2023 have maturity dates ranging from May 4, 2023 to October 5, 2023. We have classified the U.S. Treasury Securities as held-to-maturity and recorded them at amortized cost. The following table summarizes the amortized cost basis and fair value (based on quoted market prices) at April 30, 2023.
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Amortized | ​ | Gross unrealized | ​ | Gross unrealized | ​
​ |  | cost |  | gains | ​ | losses | Fair value
U.S. Treasury Securities | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
As of April 30, 2023 | ​ | $ | 76,400 | $ | - | $ | (17) | $ | 76,383
​ The contractual maturities of investments are within one year and the weighted average yield to maturity is 4.75%.

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- Definition The entire disclosure for investments in certain debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -URI https://asc.fasb.org/subtopic&trid=2209399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -URI https://asc.fasb.org/subtopic&trid=2324412 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI https://asc.fasb.org/topic&trid=2196928 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -URI https://asc.fasb.org/subtopic&trid=2176304 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1403 -Paragraph (b) + Details
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