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Investments | 3 Months Ended
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Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract] |
Investments | INVESTMENTS All investments are short-term in nature and are invested in corporate bonds and commercial paper, and are classified as available-for-sale. The amortized cost, gross unrealized holding gains or losses and fair value of our available-for-sale investments by major investment type are summarized in the tables below (in thousands):
| December 31, 2021
| Amortized Cost |  | Gross Unrealized Holding Gains |  | Gross Unrealized Holding Losses |  | Aggregate Fair Value
Corporate bonds | $ | 89,230 |  |  | $ | 48 |  |  | $ | (617) |  |  | $ | 88,661 |
Commercial paper | 115,706 |  |  | — |  |  | (53) |  |  | 115,653 |
Total short-term investments | $ | 204,936 |  |  | $ | 48 |  |  | $ | (670) |  |  | $ | 204,314 |
| October 1, 2021
| Amortized Cost |  | Gross Unrealized Holding Gains |  | Gross Unrealized Holding Losses |  | Aggregate Fair Value
Corporate bonds | $ | 73,653 |  |  | $ | 151 |  |  | $ | (171) |  |  | $ | 73,633 |
Commercial paper | 114,718 |  |  | 21 |  |  | (7) |  |  | 114,732 |
Total short-term investments | $ | 188,371 |  |  | $ | 172 |  |  | $ | (178) |  |  | $ | 188,365 |
The contractual maturities of available-for-sale investments were as follows (in thousands):
| December 31, 2021 | October 1, 2021
Less than one year | $ | 132,074 |  | $ | 120,590 |
Over one year | 72,240 |  | 67,775 |
Total available-for-sale investments | $ | 204,314 |  | $ | 188,365 |
We have determined that the gross unrealized losses on available for sale securities as of December 31, 2021 and October 1, 2021 are temporary in nature and/or do not relate to credit loss, and therefore there is no expense for credit losses recorded in our condensed consolidated statements of operations. Unrealized gains and losses on available-for-sale investments are reported as a separate component of stockholders’ equity within accumulated other comprehensive income. Other Investments — As of December 31, 2021, we held a non-marketable equity investment in Series B preferred stock of a privately held manufacturing corporation with preferred liquidation rights over other equity shares. As the equity securities do not have a readily determinable fair value and do not qualify for the practical expedient under Accounting Standards Codification (“ASC”) 820, Fair Value Measurement, we have elected to account for this investment at cost less any impairment. We evaluate this investment for impairment at each balance sheet date. As of December 31, 2021 and October 1, 2021, the carrying value of this investment was $2.5 million and is classified as a long-term investment. As of October 1, 2021, also included in long-term investments was a non-controlling investment of less than 10% in the outstanding equity of a private company, Ampere Computing Holdings LLC (“Ampere”), that was acquired in conjunction with our divestiture of our compute business during our fiscal year 2018. This investment’s carrying value was updated quarterly based on our proportionate share of the gains or losses, as well as any changes in Ampere's equity, utilizing the equity method. As of October 1, 2021, the carrying value of this investment was $12.8 million. During the three months ended December 31, 2021 and January 1, 2021, we recorded our proportionate share of the losses on this investment of $3.3 million and $4.8 million, respectively, in Other income (expense), net in our condensed consolidated statements of operations. On December 23, 2021, we sold our investment in Ampere to one of Ampere’s other limited liability company members, pursuant to the terms of a previously negotiated call option included in Ampere’s limited liability company agreement, as amended and restated (the “LLC Agreement”), in exchange for a predetermined fixed price as set forth in the LLC Agreement of approximately $127.8 million in cash consideration. As of December 23, 2021, the carrying value of this investment was approximately $9.5 million. As a result of this transaction, during the fiscal quarter ended December 31, 2021, we recorded a gain of $118.2 million in Other income (expense), net in our condensed consolidated statements of operations.

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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 http://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 http://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 http://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 http://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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