DOSSIER · 13F Holders · Q1 2026
USAX

INVESTMENT MANAGERS SER TR I

3 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 46092D269·3 13F holders·last filed Mar 31, 2026
Market cap
13F value held
$258K
visible holders
Holders
3
filers reporting
Concentration
98.26%
Optiver Holding B.V. #1
top holder share
AI Holders Summary · Q1 2026

3 institutions reported USAX in Q1 2026. Optiver Holding B.V. leads at 98.3% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
Optiver Holding B.V.
CIK 0001859606· Market maker
$253K19K0.00%Q1 2026
02
SIMPLEX TRADING, LLC
CIK 0001488542
$4K3080.00%Q1 2026
03
Tower Research Capital LLC (TRC)
CIK 0001533421
$445340.00%Q1 2026