13F Insight
DOSSIER · 13F Holders · Q1 2026Healthcare · X-Ray Apparatus & Tubes & Related Irradiation ApparatusMega-capCrowded
HOLX

HOLOGIC INC

757 institutions still hold HOLOGIC INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 436440101·X-Ray Apparatus & Tubes & Related Irradiation Apparatus·757 13F holders·last filed Mar 31, 2026
Market cap
—
▲ 9.8%
vs prior quarter
13F value held
$9.6B
70.0% inst. owned
of float
Holders
757
-69 QoQ
filers reporting
Activity
+32 / −24
+1,037 added · −787 reduced
this quarter
Concentration
17.72%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

757 institutions reported HOLX in Q1 2026. BlackRock, Inc. leads at 17.7% of the visible book. -69 net institutions QoQ — distribution reading.

Top holders

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

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$1.7B22.5M0.03%Q1 202602
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$1.1B14.5M0.03%Q1 202603
STATE STREET CORP
CIK 0000093751
$755M10.0M0.03%Q1 202604
HBK INVESTMENTS L P
CIK 0001011443
$741M9.8M7.52%Q1 202605
Vanguard Portfolio Management
CIK 0002100121
$727M9.6M0.04%Q1 202606
FIL Ltd
CIK 0000318989
$591M7.8M0.46%Q1 202607
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$456M6.1M0.03%Q1 202608
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
$428M5.7M0.18%Q1 202609
UBS Group AG
CIK 0001610520
$385M5.1M0.06%Q1 202610
BALYASNY ASSET MANAGEMENT L.P.
CIK 0001218710
$357M4.7M0.46%Q1 202611
Pentwater Capital Management LP
CIK 0001425851
$340M4.5M1.76%Q1 202612
MORGAN STANLEY
CIK 0000895421
$270M3.6M0.02%Q1 202613
JPMORGAN CHASE & CO
CIK 0000019617
$249M3.3M0.02%Q1 202614
Invesco Ltd.
CIK 0000914208
$239M3.2M0.04%Q1 202615
Qube Research & Technologies Ltd
CIK 0001729829
$237M3.1M0.26%Q1 202616
O'Connor Alternative Investments LLC
CIK 0002081629
$236M3.1M20.19%Q1 202617
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
$221M2.9M0.12%Q1 202618
NORTHERN TRUST CORP
CIK 0000073124· Index
$202M2.7M0.03%Q1 202619
OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC)
CIK 0001132716
$194M2.6M5.75%Q4 202520
GOLDMAN SACHS GROUP INC
CIK 0000886982
$181M2.4M0.02%Q1 2026
Page 1 of 38
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