Siebert Financial SIEB Institutional Ownership

NASDAQ SIEB

$2.39 +0.06 (+2.58%)

At close: Sep 18, 2026 · 4:00 PM EDT

Institutions by Trading Activity

49 Institutions

Increased 24 49.0%

Unchanged 2 4.1%

Reduced 23 46.9%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

5.81%

▼-2.02 pp QoQ

Shares Held by Institutions

2.38Mn

of 40.98Mn outstanding

▼-14.56% QoQ

Shares Outstanding

40.98Mn

38.60Mn held outside 13F filers

Institutional Investors

filed 13F for Jun 2026

▼-6 vs prior quarter

Net Shares Added (QoQ)

-405.80K

distributed since last quarter

Value of Holdings

$5.69Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Siebert Financial Corp (NASDAQ:SIEB) appears in 49 institutional 13F filings for the quarter ending June 2026.

These investors held 5.8% of outstanding shares in June 2026, down from 7.8% in March 2026.
They decreased total shares held in Siebert Financial by -14.56% from the prior quarter, while the number of investors in SIEB increased 11.36% year over year.
Activity in SIEB broke down as 24 buyers, 23 sellers, and 2 unchanged among 49 total holders.
Combined, these investors held 2.38Mn shares in SIEB for June 2026, down by 405.8K shares quarter on quarter, and down 866.06K shares year over year.
VANGUARD CAPITAL MANAGEMENT LLC holds the largest position in SIEB at 549.72K shares as of June 30, 2026, or 1.34% of shares outstanding.
The biggest buyers of Siebert Financial for the quarter ending June 2026 included CANTOR FITZGERALD, L. P. (515.91K), MILLENNIUM MANAGEMENT LLC (121.23K), JANE STREET GROUP, LLC (55.77K), AQR CAPITAL MANAGEMENT LLC (25.27K), CITADEL ADVISORS LLC (21.56K).
The largest sellers of Siebert Financial for the quarter ending June 2026 were BlackRock, Inc. (677.64K), GEODE CAPITAL MANAGEMENT, LLC (181.65K), UBS Group AG (138.3K), Northern Trust Corp (96.31K), State Street Corp (93.58K).
Business Quant data shows the 10 biggest positions in Siebert Financial as of June 2026 are held by VANGUARD CAPITAL MANAGEMENT LLC (549.72K), CANTOR FITZGERALD, L. P. (515.91K), GEODE CAPITAL MANAGEMENT, LLC (253.89K), Cetera Investment Advisers (146.99K), MILLENNIUM MANAGEMENT LLC (121.23K), VANGUARD FIDUCIARY TRUST CO (107.63K), BlackRock, Inc. (101.95K), Goldman Sachs Group Inc (56.16K), JANE STREET GROUP, LLC (55.77K), State Street Corp (50.65K).

Form 13F Holdings

49 Institutional Holders

Report period 30 Jun, 2026

Total shares held 2.38Mn

Of outstanding 5.81%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	549,720	1.34%	▼899	-0.16%	$907.04K
2	CANTOR FITZGERALD, L. P.	0001024896	515,911	1.26%	▲515,911	0.00%	$851.25K
3	GEODE CAPITAL MANAGEMENT, LLC	0001214717	253,888	0.62%	▼181,651	-41.71%	$419.17K
4	Cetera Investment Advisers	0001666741	146,990	0.36%	▲531	+0.36%	$242.53K
5	MILLENNIUM MANAGEMENT LLC	0001273087	121,232	0.30%	▲121,232	0.00%	$200.03K
6	VANGUARD FIDUCIARY TRUST CO	0000933478	107,626	0.26%	▼5,269	-4.67%	$177.58K
7	BlackRock, Inc.	0002012383	101,946	0.25%	▼677,640	-86.92%	$168.21K
8	Goldman Sachs Group Inc	0000886982	56,158	0.14%	▲20,090	+55.70%	$92.66K
9	JANE STREET GROUP, LLC	0001595888	55,771	0.14%	▲55,771	0.00%	$92.02K
10	State Street Corp	0000093751	50,650	0.12%	▼93,584	-64.88%	$83.57K
11	CITADEL ADVISORS LLC	0001423053	48,906	0.12%	▲21,561	+78.85%	$80.70K
12	SUSQUEHANNA INTERNATIONAL GROUP, LLP	0001446194	48,308	0.12%	▲19,643	+68.53%	$79.71K
13	Northern Trust Corp	0000073124	42,312	0.10%	▼96,313	-69.48%	$69.82K
14	BRIDGEWAY CAPITAL MANAGEMENT, LLC	0001107261	35,307	0.09%	▼21,953	-38.34%	$58.26K
15	DIMENSIONAL FUND ADVISORS LP	0000354204	26,299	0.06%	▼8,542	-24.52%	$43.55K
16	AQR CAPITAL MANAGEMENT LLC	0001167557	25,273	0.06%	▲25,273	0.00%	$41.70K
17	UBS Group AG	0001610520	22,296	0.05%	▼138,297	-86.12%	$36.79K
18	Morgan Stanley	0000895421	22,084	0.05%	▲13,852	+168.27%	$36.44K
19	Williams & Novak Wealth Management, LLC	0001998419	21,900	0.05%	▲6,100	+38.61%	$36.14K
20	Qube Research & Technologies Ltd	0001729829	21,315	0.05%	▲21,315	0.00%	$35.17K

Showing 1 to 20 of 49 holders