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Fair Value Measurements | 3 Months Ended
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Apr. 30, 2026
Fair Value Disclosures [Abstract] |
Fair Value Measurements | Fair Value Measurements The following table presents the fair value hierarchy for financial assets and liabilities measured at fair value on a recurring basis as of April 30, 2026 (in thousands):
|  | Level 1 |  | Level 2 |  |  |  | Total
Assets |  |  |  |  |  |  |  |
Cash equivalents: |  |  |  |  |  |  |  |
Money market funds |  | $ | 560,643 |  |  | $ | — |  |  |  |  | $ | 560,643 |
Short-term investments: |  |  |  |  |  |  |  |
Certificates of deposit |  | — |  |  | 27,669 |  |  |  |  | 27,669 |
Asset-backed securities |  | — |  |  | 205,966 |  |  |  |  | 205,966 |
Commercial paper |  | — |  |  | 44,753 |  |  |  |  | 44,753 |
Corporate notes and bonds |  | — |  |  | 3,289,706 |  |  |  |  | 3,289,706 |
Foreign government bonds |  | — |  |  | 219,696 |  |  |  |  | 219,696 |
Municipal securities |  | — |  |  | 41,456 |  |  |  |  | 41,456 |
U.S. agency obligations |  | — |  |  | 1,488 |  |  |  |  | 1,488 |
U.S. Treasury securities |  | — |  |  | 1,585,405 |  |  |  |  | 1,585,405 |
Foreign currency derivative contracts |  | — |  |  | 59 |  |  |  |  | 59 |
Total financial assets |  | $ | 560,643 |  |  | $ | 5,416,198 |  |  |  |  | $ | 5,976,841 |
Liabilities |  |  |  |  |  |  |  |
Foreign currency derivative contracts |  | $ | — |  |  | $ | (791) |  |  |  |  | $ | (791) |
Total financial liabilities |  | $ | — |  |  | $ | (791) |  |  |  |  | $ | (791) |
The following table presents the fair value hierarchy for financial assets and liabilities measured at fair value on a recurring basis as of January 31, 2026 (in thousands):
|  | Level 1 |  | Level 2 |  |  |  | Total
Assets |  |  |  |  |  |  |  |
Cash equivalents: |  |  |  |  |  |  |  |
Money market funds |  | $ | 286,504 |  |  | $ | — |  |  |  |  | $ | 286,504 |
U.S. Treasury securities |  | — |  |  | 2,611 |  |  |  |  | 2,611 |
Short-term investments: |  |  |  |  |  |  |  |
Certificates of deposit |  | — |  |  | 27,690 |  |  |  |  | 27,690 |
Asset-backed securities |  | — |  |  | 261,917 |  |  |  |  | 261,917 |
Commercial paper |  | — |  |  | 75,375 |  |  |  |  | 75,375 |
Corporate notes and bonds |  | — |  |  | 3,154,559 |  |  |  |  | 3,154,559 |
Foreign government bonds |  | — |  |  | 233,401 |  |  |  |  | 233,401 |
Municipal securities |  | — |  |  | 37,453 |  |  |  |  | 37,453 |
U.S. agency obligations |  | — |  |  | 11,720 |  |  |  |  | 11,720 |
U.S. Treasury securities |  | — |  |  | 1,337,466 |  |  |  |  | 1,337,466 |
Foreign currency derivative contracts |  | — |  |  | 822 |  |  |  |  | 822 |
Total financial assets |  | $ | 286,504 |  |  | $ | 5,143,014 |  |  |  |  | $ | 5,429,518 |
Liabilities |  |  |  |  |  |  |  |
Foreign currency derivative contracts |  | $ | — |  |  | $ | (3,187) |  |  |  |  | $ | (3,187) |
Total financial liabilities |  | $ | — |  |  | $ | (3,187) |  |  |  |  | $ | (3,187) |
We determine the fair value of our security holdings based on pricing from our service providers and market prices from industry-standard independent data providers. The valuation techniques used to measure the fair value of financial instruments having Level 2 inputs were derived from non-binding consensus prices that are corroborated by observable market data or quoted market prices for similar instruments. Such market prices may be quoted prices in active markets for identical assets (Level 1 inputs) or pricing determined using inputs other than quoted prices that are observable either directly or indirectly (Level 2 inputs). Balance Sheet Hedges We enter into foreign currency forward contracts in order to hedge our foreign currency exposure. These forward contracts are not designated as hedging instruments under applicable accounting guidance, and therefore, we account for them at fair value with changes in the fair value recorded as a component of other income, net in our condensed consolidated statements of comprehensive income. Cash flows from such forward contracts are classified as operating activities. In the three months ended April 30, 2026, net realized and unrealized foreign currency gain on hedging was $2 million. In the three months ended April 30, 2025, net realized and unrealized foreign currency loss on hedging was $7 million. The fair value of our outstanding derivative instruments is summarized below (in thousands):
| April 30, 2026 |  | January 31, 2026
Notional amount of foreign currency derivative contracts | $ | 120,426 |  |  | $ | 354,696 |
Fair value of foreign currency derivative contracts | $ | 121,209 |  |  | $ | 356,320 |

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- Definition The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 107 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-107 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 100 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-100 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2E -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2E Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Topic 940 -SubTopic 820 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478119/940-820-50-1 + Details
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