DOSSIER · 13F Holders · Q2 2026
SIEB

SIEBERT FINL CORP

46 institutions still hold SIEBERT FINL CORP as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 826176109·46 13F holders·last filed Jun 30, 2026
Market cap
—
13F value held
$5M
visible holders
Holders
46
filers reporting
Concentration
37.51%
CANTOR FITZGERALD, L. P. #1
top holder share
AI Holders Summary · Q2 2026

46 institutions reported SIEB in Q2 2026. CANTOR FITZGERALD, L. P. leads at 37.5% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
CANTOR FITZGERALD, L. P.
CIK 0001024896
$2M1.0M0.01%Q2 2026
02
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$907K550K0.00%Q2 2026
03
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$419K254K0.00%Q2 2026
04
Cetera Investment Advisers
CIK 0001666741
$243K147K0.00%Q2 2026
05
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
$200K121K0.00%Q2 2026
06
VANGUARD FIDUCIARY TRUST CO
CIK 0000933478· Index
$178K108K0.00%Q2 2026
07
BlackRock, Inc.
CIK 0002012383
$168K102K0.00%Q2 2026
08
GOLDMAN SACHS GROUP INC
CIK 0000886982
$93K56K0.00%Q2 2026
09
STATE STREET CORP
CIK 0000093751
$84K51K0.00%Q2 2026
10
CITADEL ADVISORS LLC
CIK 0001423053
$81K49K0.00%Q2 2026
11
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$80K48K0.00%Q2 2026
12
NORTHERN TRUST CORP
CIK 0000073124· Index
$70K42K0.00%Q2 2026
13
BRIDGEWAY CAPITAL MANAGEMENT, LLC
CIK 0001107261
$58K35K0.00%Q2 2026
14
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$44K26K0.00%Q2 2026
15
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
$42K25K0.00%Q2 2026
16
UBS Group AG
CIK 0001610520
$37K22K0.00%Q2 2026
17
MORGAN STANLEY
CIK 0000895421
$36K22K0.00%Q2 2026
18
Qube Research & Technologies Ltd
CIK 0001729829
$35K21K0.00%Q2 2026
19
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
$35K21K0.00%Q2 2026
20
XTX Topco Ltd
CIK 0001828301
$29K18K0.00%Q2 2026
Page 1 of 3
26 more holders available. Log in →
Insiders at SIEBERT FINL CORP
Gebbia Richard →Gebbia John M. →Gebbia David →Gebbia John J →Gebbia Gloria E →Reich Andrew H →Zabatta Charles →