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v3.25.2

Collateralized transactions - Narrative (Details) | 6 Months Ended |
--- | --- | ---
Jun. 30, 2025 USD ($) customer dealer | Dec. 31, 2024 USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Bank call loans | $ 323,800,000 | $ 252,100,000
Market value of securities | 41,300,000 | 320,000,000
Customer securities under customer margin loans that are available to be pledged | 1,800,000,000 |
Re-pledged amounts under securities loans agreements | 339,100,000 |
Customer securities directly with the Options Clearing Corporation to secure obligations and margin requirements under option contracts written by customers | 182,200,000 |
Outstanding letters of credit | 0 |
Amounts pledged | $ 1,072,282,000 | 1,015,604,000
Number of broker-dealers | dealer | 3 |
Receivable from brokers and clearing organizations | $ 99,400,000 |
Number of customers | customer | 2 |
Receivable from customers | $ 653,200,000 |
Number of business days for related transactions (in days) | 1 day |
2 Largest Customers | Accounts Receivable | Customer Concentration Risk |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Concentration risk, percentage | 49.50% |
Corporate equities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair value of securities received as collateral | $ 137,100,000 | 131,700,000
Corporate equities | Reverse Repurchase Agreements |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair value of collateral | 192,800,000 | 68,100,000
Corporate equities | Securities Borrowed Transactions |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair value of securities received as collateral, sold and re-pledged under securities loaned | $ 51,500,000 | 39,200,000
Corporate equities | Repurchase Agreements |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair value of collateral |  | $ 68,100,000

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