As of March 31, 2021, aggregate excess regulatory capital for all of the operating subsidiaries was $6.7 billion.

IB LLC, IBKR Securities Services LLC (formerly, Timber Hill LLC) and Interactive Brokers Corp are subject to the Uniform Net Capital Rule (Rule 15c3-1) under the Exchange Act, IB LLC is also subject to the CFTC’s minimum financial requirements (Regulation 1.17), and IBKRFS is subject to the Swiss Financial Market Supervisory Authority eligible equity requirement. IBC is subject to the Investment Industry Regulatory Organization of Canada risk adjusted capital requirement, IBUK is subject to the United Kingdom Financial Conduct Authority Capital Requirements Directive, IBIE is subject to the Central Bank of Ireland financial resources requirement, IBLUX is subject to the Luxembourg Commission de Surveillance du Secteur Financier financial resources requirement, IBCE is subject to the Hungarian National Bank financial resource requirement, IBI is subject to the National Stock Exchange of India net capital requirements, IBHK is subject to the Hong Kong Securities Futures Commission liquid capital requirement, IBSJ is subject to the Japanese Financial Supervisory Agency capital requirements, IBSG is subject to the Monetary Authority of Singapore capital requirements, and IBA is subject to the Australian Securities Exchange liquid capital requirement.

The table below summarizes capital, capital requirements and excess regulatory capital as of March 31, 2021.



	Net Capital/
	Eligible Equity		Requirement		Excess

	(in millions)
IB LLC	$	5,211	$	753	$	4,458
IBKRFS		600		21		579
IBHK		738		264		474
Other regulated operating subsidiaries		1,644		420		1,224
	$	8,193	$	1,458	$	6,735

Regulatory capital requirements could restrict the operating subsidiaries from expanding their business and declaring dividends if their net capital does not meet regulatory requirements. Also, certain operating subsidiaries are subject to other regulatory restrictions and requirements.