DOSSIER · 13F Holders · Q2 2026Healthcare · Services-Medical Laboratories
RDNT

RADNET INC

348 institutions still hold RADNET INC as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 750491102·Services-Medical Laboratories·348 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$3.2B
visible holders
Holders
348
filers reporting
Concentration
21.23%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q2 2026

348 institutions reported RDNT in Q2 2026. BlackRock, Inc. leads at 21.2% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$676M11.0M0.01%Q2 2026
02
RTW INVESTMENTS, LP
CIK 0001493215
$299M4.8M2.55%Q2 2026
03
Vanguard Portfolio Management
CIK 0002100121· Index
$251M4.1M0.01%Q2 2026
04
PRICE T ROWE ASSOCIATES INC /MD/
CIK 0000080255
$232M4.2M0.03%Q1 2026
05
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$197M3.2M0.00%Q2 2026
06
BECK MACK & OLIVER LLC
CIK 0000010742
$195M3.2M3.80%Q2 2026
07
STATE STREET CORP
CIK 0000093751
$175M2.8M0.01%Q2 2026
08
Van Berkom & Associates Inc.
CIK 0001524408
$115M2.1M1.88%Q1 2026
09
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$115M1.9M0.01%Q2 2026
10
Invesco Ltd.
CIK 0000914208
$101M1.6M0.01%Q2 2026
11
AMERICAN CENTURY COMPANIES INC
CIK 0000748054
$100M1.6M0.04%Q2 2026
12
Clearbridge Investments, LLC
CIK 0001348883
$95M1.5M0.08%Q2 2026
13
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$92M1.5M0.02%Q2 2026
14
Hood River Capital Management LLC
CIK 0001578177
$90M1.5M0.65%Q2 2026
15
JB CAPITAL PARTNERS LP
CIK 0001138532
$88M1.4M13.59%Q2 2026
16
BAMCO INC /NY/
CIK 0001017918
$78M1.3M0.12%Q2 2026
17
Defiance ETFs, LLC
CIK 0001732541
$75M1.1M1.02%Q2 2026
18
GOLDMAN SACHS GROUP INC
CIK 0000886982
$73M1.2M0.01%Q2 2026
19
Alyeska Investment Group, L.P.
CIK 0001453072
$72M1.2M0.19%Q2 2026
20
PRINCIPAL FINANCIAL GROUP INC
CIK 0001126328
$65M1.1M0.03%Q2 2026
Page 1 of 18
328 more holders available. Log in →
Insiders at RADNET INC
Berger Howard GWesdorp CornelisLevitt Lawrence LJacobs Laura PastreSwartz David LSpurlock Gregory E.Sorensen Alma GregoryKatz David Jeffrey