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Intangible Assets (Components) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
Intangible Assets [Line Items] |  |
Total intangible assets | $ 3,330,788 | $ 1,482,988
Definite-lived intangibles, net(1): |  |
Gross Carrying Value | 4,541,590 | 2,462,816
Accumulated Amortization | (1,250,621) | (1,019,647)
Net Carrying Value | 3,290,969 | 1,443,169
Indefinite-lived intangible assets: |  |
Purchase accounting adjustments | $ 497,885 | 333,205
Trademark and trade name |  |
Intangible Assets [Line Items] |  |
Weighted-Average Life Remaining (in years) | 15 years 7 months 6 days |
Definite-lived intangibles, net(1): |  |
Gross Carrying Value | $ 26,000 |
Accumulated Amortization | (677) |
Net Carrying Value | 25,323 |
Indefinite-lived intangible assets: |  |
Net Carrying Value | $ 39,819 | $ 39,819
Advisor and institution relationships |  |
Intangible Assets [Line Items] |  |
Weighted-Average Life Remaining (in years) | 13 years 7 months 6 days | 13 years 4 months 24 days
Definite-lived intangibles, net(1): |  |
Gross Carrying Value | $ 3,350,706 | $ 1,626,281
Accumulated Amortization | (859,100) | (699,385)
Net Carrying Value | $ 2,491,606 | $ 926,896
Product sponsor relationships |  |
Intangible Assets [Line Items] |  |
Weighted-Average Life Remaining (in years) | 1 year 2 months 12 days | 1 year 3 months 18 days
Definite-lived intangibles, net(1): |  |
Gross Carrying Value | $ 234,086 | $ 234,086
Accumulated Amortization | (232,362) | (220,880)
Net Carrying Value | $ 1,724 | $ 13,206
Client relationships |  |
Intangible Assets [Line Items] |  |
Weighted-Average Life Remaining (in years) | 12 years 3 months 18 days | 12 years 8 months 12 days
Definite-lived intangibles, net(1): |  |
Gross Carrying Value | $ 909,868 | $ 581,519
Accumulated Amortization | (143,039) | (86,292)
Net Carrying Value | $ 766,829 | $ 495,227
Technology |  |
Intangible Assets [Line Items] |  |
Weighted-Average Life Remaining (in years) | 3 years | 7 years 7 months 6 days
Definite-lived intangibles, net(1): |  |
Gross Carrying Value | $ 20,930 | $ 20,930
Accumulated Amortization | (15,443) | (13,090)
Net Carrying Value | $ 5,487 | $ 7,840

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