13F Insight
DOSSIER · 13F Holders · Q2 2026
STXX

INVESTMENT MANAGERS SER TR I

3 institutions still hold INVESTMENT MANAGERS SER TR I as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 46152A312·3 13F holders·last filed Jun 30, 2026
Market cap
—
13F value held
$3M
visible holders
Holders
3
filers reporting
Concentration
77.70%
CITADEL ADVISORS LLC #1
top holder share
AI Holders Summary · Q2 2026

3 institutions reported STXX in Q2 2026. CITADEL ADVISORS LLC leads at 77.7% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
CITADEL ADVISORS LLC
CIK 0001423053
$2M41K0.00%Q2 202602
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$678K11K0.00%Q2 202603
SIMPLEX TRADING, LLC
CIK 0001488542
$21K3520.00%Q2 2026
Insiders at INVESTMENT MANAGERS SER TR I
Longview Fund Lp →Spurlock Sherry L →Psencik Wayne A →Pawelek Michael J →Lieberman David Philip →Naccarato Owen →Hirschman Stanley A →Shaw Edward Brett →