13F Insight
DOSSIER · 13F Holders · Q3 2026

MICROSTRATEGY INC

15 institutions still hold MICROSTRATEGY INC as of Q3 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 594972908·15 13F holders·last filed Sep 30, 2026
Market cap
—
13F value held
$2.6B
visible holders
Holders
15
filers reporting
Concentration
78.66%
IMC-Chicago, LLC #1
top holder share
AI Holders Summary · Q3 2026

15 institutions reported MICROSTRATEGY INC in Q3 2026. IMC-Chicago, LLC leads at 78.7% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
IMC-Chicago, LLC
CIK 0001452861· Market maker
$2.0B13.2M0.42%Q3 202602
SIMPLEX TRADING, LLC
CIK 0001488542
$216M1.4M0.12%Q3 202603
Optiver Holding B.V.
CIK 0001859606· Market maker
$173M2.0M0.05%Q2 202604
GROUP ONE TRADING LLC
CIK 0000932540
$120M1.4M0.17%Q2 202605
JPMORGAN CHASE & CO
CIK 0000019617
$31M338K0.00%Q2 202606
Marathon Trading Investment Management LLC
CIK 0001572748
$3M40K0.11%Q2 202607
CMT Capital Markets Trading GmbH
CIK 0001632813
$3M21K0.03%Q1 202608
Carroll Advisory Group, LLC
CIK 0002108684
$444K3K0.14%Q3 202609
Maridea Wealth Management LLC
CIK 0002056245
$435K5K0.05%Q2 202610
SG Americas Securities, LLC
CIK 0001313360
$70K33K0.00%Q1 202611
Altshuler Shaham Ltd
CIK 0001324290
$51K950.00%Q2 202612
Yong Rong (HK) Asset Management Ltd
CIK 0001738071
$10K5K0.01%Q2 202613
Delta Investment Management, LLC
CIK 0001757043
$8K310.00%Q2 202614
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00—Q2 202515
Verde Servicos Internacionais S.A.
CIK 0001629290
$02380.00%Q3 2026