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Capital Structure - Narrative (Details)	6 Months Ended
Capital Structure - Narrative (Details)	Jun. 30, 2025 vote class shares	Jun. 30, 2024 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	3,627,621		3,994,744
Number of non-voting common interest units forfeited or repurchased (in shares) \| shares	367,123	0
Virtu Financial
Class of Stock [Line Items]
Ownership interest	57.10%
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%