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

HOLOGIC INC

127 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·127 13F holders·last filed Mar 31, 2026
Market cap
13F value held
$1.5B
visible holders
Holders
127
filers reporting
Concentration
18.10%
GLAZER CAPITAL, LLC #1
top holder share
AI Holders Summary · Q1 2026

127 institutions reported HOLX in Q1 2026. GLAZER CAPITAL, LLC leads at 18.1% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
GLAZER CAPITAL, LLC
CIK 0001076809
$269M3.6M5.71%Q1 2026
02
OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC)
CIK 0001132716
$194M2.6M5.17%Q4 2025
03
TUDOR INVESTMENT CORP ET AL
CIK 0000923093
$166M2.2M0.31%Q1 2026
04
SYQUANT CAPITAL SAS
CIK 0001766392
$115M1.5M17.98%Q1 2026
05
DekaBank Deutsche Girozentrale
CIK 0001456228
$113M1.5M0.19%Q1 2026
06
TIG Advisors, LLC
CIK 0001358253
$101M1.3M4.67%Q1 2026
07
SOROS FUND MANAGEMENT LLC
CIK 0001029160
$77M1.0M0.84%Q1 2026
08
ALLIANCEBERNSTEIN L.P.
CIK 0001109448
$76M1.0M0.02%Q1 2026
09
SG Americas Securities, LLC
CIK 0001313360
$71M933K0.08%Q1 2026
10
KRYGER CAPITAL Ltd
CIK 0001911807
$54M727K4.18%Q4 2025
11
FOURSIXTHREE CAPITAL LP
CIK 0001897652
$47M620K17.45%Q1 2026
12
NATIXIS ADVISORS, LLC
CIK 0001018331
$35M469K0.05%Q1 2026
13
Thematics Asset Management
CIK 0001956031
$31M466K1.43%Q3 2025
14
AQR Arbitrage LLC
CIK 0001167456
$31M420K0.66%Q4 2025
15
PRICE T ROWE ASSOCIATES INC /MD/
CIK 0000080255
$27M354K0.00%Q1 2026
16
Decagon Asset Management LLP
CIK 0001950677
$21M275K5.38%Q1 2026
17
CIBRA Capital Ltd
CIK 0002060725
$16M209K7.62%Q1 2026
18
BROWN ADVISORY INC
CIK 0001345929
$15M205K0.02%Q4 2025
19
Athos Capital Ltd
CIK 0001681662
$15M197K4.59%Q1 2026
20
Twin Securities, Inc.
CIK 0001351351
$14M179K6.57%Q1 2026
Page 1 of 7
107 more holders available. Log in →
Insiders at HOLOGIC INC
Cohn Benjamin JordanHantson LudwigDockendorff Charles JMacmillan Stephen PMitchell Essex DOberton Karleen Marie