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Capital Structure - Narrative (Details)
 12 Months Ended
Dec. 31, 2025
vote
class
shares
Dec. 31, 2024
shares
Class of Stock [Line Items]    
Number of classes of common stock | class 4  
Non-voting common interest units outstanding (in shares) | shares 3,402,959 3,994,744
Number of non-voting common interest units forfeited or repurchased (in shares) | shares 591,785 46,028
Virtu Financial    
Class of Stock [Line Items]    
Ownership interest 57.20%  
Class A common stock and Class C common stock    
Class of Stock [Line Items]    
Number of votes | vote 1  
Class B common stock and Class D common stock    
Class of Stock [Line Items]    
Number of votes | vote 10  
Class C common stock and class D common stock | Founder | Virtu Financial    
Class of Stock [Line Items]    
Ownership interest 87.10%