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Cash Equivalents and Marketable Securities
9 Months Ended
Oct. 31, 2020
Cash and Cash Equivalents [Abstract]  
Cash Equivalents and Marketable Securities Cash Equivalents and Marketable Securities
As of October 31, 2020 cash equivalents and marketable securities consisted of the following (in thousands):
Amortized CostUnrealized GainsUnrealized LossesAggregate Fair Value
Money market funds$356,737 $— $— $356,737 
Corporate notes and bonds30,318 — (11)30,307 
Commercial paper62,166 — — 62,166 
U.S. government and agency securities114,646 — (5)114,641 
Total$563,867 $— $(16)$563,851 
Included in cash and cash equivalents$404,432 $— $— $404,432 
Included in marketable securities$156,351 $— $(14)$156,337 
Included in other noncurrent assets$3,084 $— $(2)$3,082 
As of January 31, 2020 cash equivalents and marketable securities consisted of the following (in thousands):
Amortized CostUnrealized GainsUnrealized LossesAggregate Fair Value
Money market funds$92,272 $— $— $92,272 
Corporate notes and bonds5,665 — 5,674 
Commercial paper31,379 — — 31,379 
U.S. government and agency securities115,412 13 — 115,425 
Total$244,728 $22 $— $244,750 
Included in cash and cash equivalents$127,917 $— $— $127,917 
Included in marketable securities$116,811 $22 $— $116,833 
As of October 31, 2020 marketable securities of $156.3 million had a stated maturity date of less than one year and marketable securities of $3.1 million had a stated maturity date of greater than one year. All marketable securities as of January 31, 2020 had a stated maturity date of less than one year.