v3.26.3
Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 6 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Cash flows from operating activities:    
Net loss $ (427,817) $ (439,950)
Adjustments to reconcile net loss to net cash used in operating activities:    
Share-based compensation 162,639 163,999
Change in fair value of investments (96,929) (109,376)
Change in fair value of debt and liability instruments 0 23,288
Accretion of discount and amortization of premium on available-for-sale marketable securities, net (10,610) (7,319)
Accretion of discount and amortization of premium on held-to-maturity marketable securities, net 0 (13,564)
Depreciation and amortization 1,204 2,019
Non-cash lease expense 2,937 3,885
Gain on sale of subsidiary interests (Note 6) (15,763) 0
Other 13,759 17,062
Changes in assets and liabilities:    
Other current assets (54,669) (4,262)
Other assets 1,333 (3,391)
Litigation settlement receivable 770,235 0
Accounts payable (6,544) (8,749)
Accrued expenses 5,119 (12,480)
Operating lease liabilities (804) (1,324)
Income tax payable (25,283) (2)
Other liabilities 5,107 117
Net cash provided by (used in) operating activities 323,914 (390,047)
Marketable securities, available-for-sale    
Purchases (1,118,787) (2,778,411)
Proceeds from maturities 1,403,458 0
Proceeds from sales 20,482 0
Marketable securities, held-to-maturity    
Proceeds from maturities 0 1,825,000
Purchase of property and equipment (627) (11,883)
Proceeds from sale of subsidiary interests (Note 6) 20,883 0
Other (1,610) 0
Net cash provided by (used in) investing activities 323,799 (965,294)
Cash flows from financing activities:    
Payment of distribution by subsidiary (179,073) 0
Repurchase of the Company’s common shares (281,203) (208,293)
Proceeds from exercise of the Company’s and subsidiary stock options 101,442 98,351
Taxes paid related to net settlement of equity awards (72,525) (16,013)
Proceeds from issuance of the Company’s common shares under employee stock purchase plan 635 774
Net cash used in financing activities (430,724) (125,181)
Effect of exchange rate changes on cash, cash equivalents and restricted cash 1,610 2,021
Net change in cash, cash equivalents and restricted cash 218,599 (1,478,501)
Cash, cash equivalents and restricted cash at beginning of period 1,430,982 2,725,661
Cash, cash equivalents and restricted cash at end of period 1,649,581 1,247,160
Non-cash investing and financing activities:    
Taxes payable related to net settlement of equity awards 9,477 0
Subsidiary distribution payable 7,494 0
Other $ 9,738 $ 14,773