v3.25.2
FAIR VALUE MEASUREMENT - FAIR VALUE MEASUREMENT (Details) - USD ($)
Jun. 30, 2025
Dec. 31, 2024
Level 1 [Member]    
Assets    
Money market funds [1] $ 2,092,847,900 $ 160,084,000
Repurchase agreements 619,298,400 606,547,300
Trading securities 122,366,400  
Total assets measured at fair value 2,834,512,700 712,631,300
Liabilities    
Options premium liability [2] 1,639,200  
Convertible notes 0  
Total liabilities measured at fair value 1,639,200  
Level 2 [Member]    
Assets    
Money market funds [1] 0 0
Repurchase agreements 0 0
Trading securities 0  
Total assets measured at fair value 0 0
Liabilities    
Options premium liability [2] 0  
Convertible notes 0  
Total liabilities measured at fair value 0  
Level 3 [Member]    
Assets    
Money market funds [1] 0 0
Repurchase agreements 0 0
Trading securities 0  
Total assets measured at fair value 0 $ 0
Liabilities    
Options premium liability [2] 0  
Convertible notes 1,124,246,600  
Total liabilities measured at fair value $ 1,124,246,600  
[1] Money market funds are reflected in cash, cash equivalents, and restricted cash in the condensed consolidated balance sheets.
[2] Options premium liability is reflected in accounts payable and accrued expenses in the condensed consolidated balance sheets.