
	July 31, 2024		January 31, 2024
Cash and cash equivalents:
Cash	$	45,024	$	55,736
Money market funds	335,167		305,283
Commercial paper	5,482		994
U.S. Treasury securities	—		998
Total cash and cash equivalents	$	385,673	$	363,011

Available-for-sale investments:
U.S. Treasury securities	$	56,694	$	50,036
Commercial paper	20,192		2,886
Corporate debt securities	106,043		131,259
U.S. Government agency securities	30,711		23,997
Total available-for-sale investments	$	213,640	$	208,178

The following tables summarize the amortized cost, net unrealized gains (losses), and fair value of the Company’s investments by significant investment category as of the dates indicated (in thousands). Gross realized gains or losses from sales of available-for-sale securities were not material for the three and six months ended July 31, 2024 and 2023.


	July 31, 2024
	Amortized Cost		Unrealized Gain (Loss), Net		Estimated Fair Value
Available-for-sale investments:
U.S. Treasury securities	$	56,683	$	11	$	56,694
Commercial paper	20,205		(13)		20,192
Corporate debt securities	106,150		(107)		106,043
U.S. Government agency securities	30,760		(49)		30,711
Total available-for-sale investments	$	213,798	$	(158)	$	213,640

	January 31, 2024
	Amortized Cost		Unrealized Gain (Loss), Net		Estimated Fair Value
Available-for-sale investments:
U.S. Treasury securities	$	50,012	$	24	$	50,036
Commercial paper	2,887		(1)		2,886
Corporate debt securities	131,395		(136)		131,259
U.S. Government agency securities	23,983		14		23,997
Total available-for-sale investments	$	208,277	$	(99)	$	208,178


	July 31, 2024
	Amortized Cost		Fair Value
Due within one year	$	173,611	$	173,416
Due between one to five years	40,187		40,224
Total	$	213,798	$	213,640

	January 31, 2024
	Amortized Cost		Fair Value
Due within one year	$	155,423	$	155,158
Due between one to five years	52,854		53,020
Total	$	208,277	$	208,178

As of July 31, 2024, there were 84 securities in an unrealized loss position with an aggregate fair value of $148.6 million, 23 of which were in a continuous unrealized loss position for more than 12 months. The total unrealized loss related to the 23 securities was $0.1 million. As of January 31, 2024, there were 70 securities in an unrealized loss position with an aggregate fair value of $108.7 million, 33 of which were in a continuous unrealized loss position for more than 12 months. The unrealized loss related to the 33 securities was $0.2 million.

When evaluating investments for impairment, the Company reviews factors such as the extent to which fair value has been below cost basis, the financial condition of the issuer and any changes thereto, and the Company’s intent to sell, or whether it is more likely than not that the Company will be required to sell, the investment before recovery of the investment’s amortized cost. No impairment loss has been recorded on the securities included in the tables above, as the Company believes that any decrease in fair value of these securities is temporary and the Company expects to recover at least up to the initial cost of the investment for these securities. The Company has not recorded an allowance for credit losses, as the Company believes any such losses would be immaterial based on the high-grade credit rating for each of its marketable securities as of the end of each period.