Summary of Significant Accounting Policies	6 Months Ended
Jun. 30, 2026
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Presentation The balance sheets are presented in accordance with accounting principles generally accepted in the United States of America. Separate statements of income, comprehensive income, changes in stockholder’s equity, and cash flows have not been presented because the Corporation has not engaged in any activities except in connection with its formation. On July 2, 2026, the Corporation closed an IPO of 22,439,025 shares of Class A common stock (including the exercise in full of the underwriters' overallotment) at a public offering price of $16.00 per share. From the IPO, the Corporation received $338.4 million in proceeds, net of underwriting discounts and commissions, which was used to indirectly purchase 22,439,025 LLC Interests of ITG Parent, and ITG Parent primarily utilized the net proceeds it received from the sale of LLC Interests to the Corporation to repay borrowings under its revolving credit facility and term loan facility. The Corporation is the indirect sole managing member of ITG Parent and indirectly owns 39.02% of the economic interests of ITG Parent, through ITG Intermediate. Accordingly, the Corporation will consolidate the financial results of ITG Parent and report non-controlling interest in the Corporation's consolidated financial statements related to the LLC Interests held by the Class B common stockholders ("Continuing Equity Owners"). See Note 4, "Subsequent Events." Cash All cash, as of the balance sheet date, was cash on hand, and is carried at fair value, which approximates carrying value. Income Taxes The Corporation is treated as a subchapter C corporation, and therefore, is subject to both federal and state income taxes. ITG Parent continues to be recognized as a limited liability company, a pass-through entity for income tax purposes.

Summary of Significant Accounting Policies

6 Months Ended

Jun. 30, 2026

Summary of Significant Accounting Policies

Basis of Presentation

The balance sheets are presented in accordance with accounting principles generally accepted in the United States of America. Separate statements of income, comprehensive income, changes in stockholder’s equity, and cash flows have not been presented because the Corporation has not engaged in any activities except in connection with its formation.

On July 2, 2026, the Corporation closed an IPO of 22,439,025 shares of Class A common stock (including the exercise in full of the underwriters' overallotment) at a public offering price of $16.00 per share. From the IPO, the Corporation received $338.4 million in proceeds, net of underwriting discounts and commissions, which was used to indirectly purchase 22,439,025 LLC Interests of ITG Parent, and ITG Parent primarily utilized the net proceeds it received from the sale of LLC Interests to the Corporation to repay borrowings under its revolving credit facility and term loan facility. The Corporation is the indirect sole managing member of ITG Parent and indirectly owns 39.02% of the economic interests of ITG Parent, through ITG Intermediate. Accordingly, the Corporation will consolidate the financial results of ITG Parent and report non-controlling interest in the Corporation's consolidated financial statements related to the LLC Interests held by the Class B common stockholders ("Continuing Equity Owners"). See Note 4, "Subsequent Events."

Cash

All cash, as of the balance sheet date, was cash on hand, and is carried at fair value, which approximates carrying value.

Income Taxes

The Corporation is treated as a subchapter C corporation, and therefore, is subject to both federal and state income taxes. ITG Parent continues to be recognized as a limited liability company, a pass-through entity for income tax purposes.