13F Insight
DOSSIER · 13F Holders · Q1 2026Most-boughtAI cap-ex
SBNY

SIGNATURE BANK

6 institutions still hold SIGNATURE BANK as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 82669G104·6 13F holders·last filed Mar 31, 2026
Market cap
—
▼ 3.5%
vs prior quarter
13F value held
$260,206
72.0% inst. owned
of float
Holders
6
-45 QoQ
filers reporting
Activity
+50 / −6
+941 added · −844 reduced
this quarter
Concentration
99.92%
MASON CAPITAL MANAGEMENT LLC #1
top holder share
AI Holders Summary · Q1 2026

6 institutions reported SBNY in Q1 2026. MASON CAPITAL MANAGEMENT LLC leads at 99.9% of the visible book. -45 net institutions QoQ — distribution reading.

Top holders

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

#HolderValueShares% port.Quarter
01
MASON CAPITAL MANAGEMENT LLC
CIK 0001218735
$260,000400K0.04%Q1 202602
HUNTINGTON NATIONAL BANK
CIK 0000049205
$1963020.00%Q1 202603
NBC SECURITIES, INC.
CIK 0000791540
$9150.00%Q1 202604
TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY
CIK 0000714142
$11K0.00%Q1 202605
Global Frontier Investments LLC
CIK 0001821219
$000.00%Q1 202606
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00—Q2 2025