Basis of Presentation and Consolidation and Accounting Standards Adopted	6 Months Ended
Mar. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation and Consolidation and Accounting Standards Adopted	Basis of Presentation and Consolidation and Accounting Standards Adopted StoneX Group Inc., a Delaware corporation, and its consolidated subsidiaries (collectively “StoneX” or “the Company”), is a global financial services network that connects companies, organizations, traders and investors to the global market ecosystem through a unique blend of digital platforms, end-to-end clearing and execution services, high touch service, and deep expertise. The Company’s common stock trades on The NASDAQ Global Select Market under the symbol “SNEX”. Basis of Presentation The accompanying unaudited Condensed Consolidated Balance Sheet as of September 30, 2024, which has been derived from the audited consolidated balance sheet as of September 30, 2024, and the unaudited interim condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and disclosures normally included in annual consolidated financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) have been condensed or omitted pursuant to those rules and regulations. The Company believes that the included disclosures clearly and fairly present the information within. In management’s opinion, all adjustments, generally consisting of normal accruals, considered necessary to fairly present the condensed consolidated financial statements for the interim periods presented have been reflected as required by Rule 10-01 of Regulation S-X. Operating results for interim periods are not necessarily indicative of the results that may be expected for the full year. These condensed consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements and related notes contained in the Company’s Annual Report on Form 10-K for the fiscal year ended September 30, 2024, as filed with the SEC. These condensed consolidated financial statements include the accounts of StoneX Group Inc. and all entities in which the Company has a controlling financial interest. All material intercompany transactions and balances have been eliminated in consolidation. Preparing condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent liabilities as of the date of the condensed consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. The most significant of these estimates and assumptions in the current year relate to fair value measurements for financial instruments, revenue recognition, valuation of inventories, and income taxes. The Company reviews all significant estimates affecting the financial statements on a recurring basis and makes necessary adjustments in the financial statements presented within this Form 10-Q. Although these and other estimates and assumptions are based on the best available information, actual results could be materially different from estimates. Estimates and assumptions are based on management’s best knowledge of current events and actions the Company may undertake in the future, using information reasonably available to the Company as of March 31, 2025 and through the date of this Form 10-Q. Restricted Cash During the three months ended March 31, 2024, the Company established an escrow account designated to hold immediately available funds deposited by the Company and distribute the same amount on June 15, 2024, the redemption date, for the settlement of its 8.625% Senior Secured Notes due 2025. The Company classified these funds as restricted because the funding was irrevocable, and the Company did not have the ability to withdraw the funds. Physical Commodities Inventory The JBR Recovery Limited assets and business acquisition, discussed and defined in Note 17, introduced stages of refining, such as raw materials, work in process, and completed goods. These are reported as components of Physical commodities inventory, net on the Condensed Consolidated Balance Sheets. The Company’s valuation policy includes estimating the cost to complete refining the various stages into finished product, the type of materials being refined, along with the market prices of the finished product to arrive at the lower of cost or net realizable value. Common Stock Split On March 21, 2025, the Company completed a 3-for-2 split of its common stock, effected as a stock dividend entitling each shareholder of record to receive one additional share of common stock for every two shares owned. Additional shares issued as a result of the stock dividend were distributed after close of trading on March 21, 2025, to stockholders of record at the close of business on March 11, 2025. Cash was distributed in lieu of fractional shares based on the opening price of a share of common stock on March 12, 2025. All share and per share amounts contained herein have been retroactively adjusted for this stock split. Accounting Standards The Company did not adopt any new accounting standards during the three and six months ended March 31, 2025.

StoneX Group Inc., a Delaware corporation, and its consolidated subsidiaries (collectively “StoneX” or “the Company”), is a global financial services network that connects companies, organizations, traders and investors to the global market ecosystem through a unique blend of digital platforms, end-to-end clearing and execution services, high touch service, and deep expertise.

The accompanying unaudited Condensed Consolidated Balance Sheet as of September 30, 2024, which has been derived from the audited consolidated balance sheet as of September 30, 2024, and the unaudited interim condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and disclosures normally included in annual consolidated financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) have been condensed or omitted pursuant to those rules and regulations. The Company believes that the included disclosures clearly and fairly present the information within. In management’s opinion, all adjustments, generally consisting of normal accruals, considered necessary to fairly present the condensed consolidated financial statements for the interim periods presented have been reflected as required by Rule 10-01 of Regulation S-X.

Operating results for interim periods are not necessarily indicative of the results that may be expected for the full year. These condensed consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements and related notes contained in the Company’s Annual Report on Form 10-K for the fiscal year ended September 30, 2024, as filed with the SEC.

These condensed consolidated financial statements include the accounts of StoneX Group Inc. and all entities in which the Company has a controlling financial interest. All material intercompany transactions and balances have been eliminated in consolidation.

Preparing condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent liabilities as of the date of the condensed consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. The most significant of these estimates and assumptions in the current year relate to fair value measurements for financial instruments, revenue recognition, valuation of inventories, and income taxes. The Company reviews all significant estimates affecting the financial statements on a recurring basis and makes necessary adjustments in the financial statements presented within this Form 10-Q. Although these and other estimates and assumptions are based on the best available information, actual results could be materially different from estimates. Estimates and assumptions are based on management’s best knowledge of current events and actions the Company may undertake in the future, using information reasonably available to the Company as of March 31, 2025 and through the date of this Form 10-Q.

During the three months ended March 31, 2024, the Company established an escrow account designated to hold immediately available funds deposited by the Company and distribute the same amount on June 15, 2024, the redemption date, for the settlement of its 8.625% Senior Secured Notes due 2025. The Company classified these funds as restricted because the funding was irrevocable, and the Company did not have the ability to withdraw the funds.

The JBR Recovery Limited assets and business acquisition, discussed and defined in Note 17, introduced stages of refining, such as raw materials, work in process, and completed goods. These are reported as components of Physical commodities inventory, net on the Condensed Consolidated Balance Sheets. The Company’s valuation policy includes estimating the cost to complete refining the various stages into finished product, the type of materials being refined, along with the market prices of the finished product to arrive at the lower of cost or net realizable value.

On March 21, 2025, the Company completed a 3-for-2 split of its common stock, effected as a stock dividend entitling each shareholder of record to receive one additional share of common stock for every two shares owned. Additional shares issued as a result of the stock dividend were distributed after close of trading on March 21, 2025, to stockholders of record at the close of business on March 11, 2025. Cash was distributed in lieu of fractional shares based on the opening price of a share of common stock on March 12, 2025. All share and per share amounts contained herein have been retroactively adjusted for this stock split.