13F Insight
DOSSIER · 13F Holders · Q2 2026

INTERNATIONAL BUSINESS MACHS

14 institutions still hold INTERNATIONAL BUSINESS MACHS as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 459200901·14 13F holders·last filed Jun 30, 2026
Market cap
—
13F value held
$1.3B
visible holders
Holders
14
filers reporting
Concentration
35.43%
Optiver Holding B.V. #1
top holder share
AI Holders Summary · Q2 2026

14 institutions reported INTERNATIONAL BUSINESS MACHS in Q2 2026. Optiver Holding B.V. leads at 35.4% 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
$446M1.6M0.12%Q2 202602
IMC-Chicago, LLC
CIK 0001452861· Market maker
$438M2.0M0.09%Q3 202603
GROUP ONE TRADING LLC
CIK 0000932540
$114M405K0.16%Q2 202604
NATIONAL BANK OF CANADA /FI/
CIK 0000926171
$84M3K0.06%Q2 202605
SIMPLEX TRADING, LLC
CIK 0001488542
$83M378K0.05%Q3 202606
JPMORGAN CHASE & CO
CIK 0000019617
$57M206K0.00%Q2 202607
Capital Markets Trading UK LLP
CIK 0001719165
$17M70K0.21%Q1 202608
Maven Securities LTD
CIK 0001633046
$13M45K0.25%Q2 202609
CMT Capital Markets Trading GmbH
CIK 0001632813
$4M18K0.04%Q1 202610
Baer Investment Advisory LLC
CIK 0002057153
$2M3991.41%Q3 202611
Marathon Trading Investment Management LLC
CIK 0001572748
$844K3K0.03%Q2 202612
SG Americas Securities, LLC
CIK 0001313360
$560K120K0.00%Q1 202613
OSAIC HOLDINGS, INC.
CIK 0001677044
$19K30.00%Q2 202614
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00—Q2 2025