DOSSIER · 13F Holders · Q1 2026
QUBX

INVESTMENT MANAGERS SER TR I

4 institutions still hold INVESTMENT MANAGERS SER TR I as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 46152A734·4 13F holders·last filed Mar 31, 2026
Market cap
13F value held
$1M
visible holders
Holders
4
filers reporting
Concentration
43.07%
UBS Group AG #1
top holder share
AI Holders Summary · Q1 2026

4 institutions reported QUBX in Q1 2026. UBS Group AG leads at 43.1% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
UBS Group AG
CIK 0001610520
$639K85K0.00%Q1 2026
02
CITADEL ADVISORS LLC
CIK 0001423053
$603K28K0.00%Q4 2025
03
Optiver Holding B.V.
CIK 0001859606· Market maker
$148K20K0.00%Q1 2026
04
JANE STREET GROUP, LLC
CIK 0001595888· Market maker
$93K12K0.00%Q1 2026