Regulatory Requirements and Subsidiary Dividend Restrictions (Tables)

12 Months Ended

Sep. 30, 2025

Capital and Other Regulatory Requirements [Abstract]

Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations

The following table details the Company’s subsidiaries with a minimum regulatory client money or segregation requirement, as well as the client segregated funds and secured funds of the subsidiary as of September 30, 2025 (in millions):



		Client Segregated Funds				Client Secured Funds
Subsidiary	Regulatory Authority	Actual		Minimum Requirement		Actual		Minimum Requirement
StoneX Financial Inc.	SEC and CFTC	$	7,244.8	$	7,159.6	$	260.4	$	247.1
StoneX Financial Ltd	FCA	$	1,874.4	$	1,853.8	N/A		N/A
StoneX Financial Pte. Ltd.	MAS	$	1,062.6	$	1,049.1	N/A		N/A
R.J. O’Brien & Associates LLC	CFTC and NFA	$	6,293.6	$	6,015.7	$	280.8	$	248.2
R.J. O’Brien Limited	FCA	$	460.3	$	460.0	N/A		N/A

The following table details the Company’s subsidiaries with a minimum regulatory net capital requirement in excess of $10.0 million as well as the actual regulatory capital of the subsidiary as of September 30, 2025 (in millions):



Subsidiary	Regulatory Authority	Actual		Minimum Requirement
StoneX Financial Inc.	SEC and CFTC	$	519.1	$	362.8
StoneX Financial Ltd	FCA	$	557.4	$	457.1
GAIN Capital Group, LLC	CFTC and NFA	$	65.8	$	30.4
StoneX Financial Pte. Ltd.	MAS	$	127.4	$	26.3
StoneX Markets LLC	CFTC and NFA	$	252.5	$	154.4
R.J. O’Brien & Associates LLC	CFTC and NFA	$	367.4	$	275.8
R.J. O’Brien Limited	FCA	$	39.1	$	20.3