CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($)		Number of Shares $.01 Par Value [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Total
Beginning balance at Dec. 31, 2018		$ 271,000	$ 7,641,000	$ 9,262,000	$ 17,174,000
Beginning balance, shares at Dec. 31, 2018		27,157,188
Employee stock purchases
Net income				3,236,000	3,236,000	[1]
Shares issued for StockCross purchase	[2]	$ 33,000	12,256,000	436,000	12,725,000
Shares issued for StockCross purchase, shares	[2]	3,302,616
Ending balance at Dec. 31, 2019		$ 304,000	19,897,000	12,934,000	33,135,000	[3]
Ending balance, shares at Dec. 31, 2019		30,549,804
Shares issued for payment of professional services		$ 2,000	1,125,000		1,127,000
Shares issued for payment of professional services, shares		193,906
Employee stock purchases		$ 3,000	797,000		800,000
Employee stock purchases, shares		300,000
Adjustment for deferred tax asset valuation			(51,000)		(51,000)
Net income				2,975,000	2,975,000
Ending balance at Dec. 31, 2020		$ 309,000	$ 21,768,000	$ 15,909,000	$ 37,986,000
Ending balance, shares at Dec. 31, 2020		30,953,710

[1] Statement of income for the year ended December 31, 2019 represents the pro forma combination of Siebert and StockCross balances. See "Note 3 - Acquisitions" for additional detail.

[2] Represents the purchase of the net assets of StockCross less Siebert's 15% equity method investment in StockCross and also includes other pro forma adjustments. See the statement of financial condition within Note 3 Acquisitions for additional detail.

[3] Statement of financial condition as of December 31, 2019 represents the pro forma combination of Siebert and StockCross balances. See "Note 3 - Acquisitions" for additional detail.