RDNT
RadNet (RDNT)
NASDAQ
$68.90-$1.36 (-1.94%)
Price as of Oct 22, 2026 7:30 PM EDT
  • $5.4B
    Market Cap
  • -15.23%
    1-Year Change
  • Diagnostics & Research
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
BLACKROCK, INC.
13.92%
11.0M
+922,074 (+8.41%)
Jun 30, 2026
BLACKROCK FUNDING, INC. /DE
12.47%
9.8M
+236,029 (+2.40%)
Dec 31, 2024
BLACKROCK INC.
12.21%
9.6M
+347,340 (+3.62%)
Jun 30, 2024
VANGUARD GROUP INC
9.48%
7.5M
-20,768 (-0.28%)
Dec 31, 2025
RTW INVESTMENTS, LP
6.16%
4.8M
+561,958 (+11.59%)
Jun 30, 2026
PRICE T ROWE ASSOCIATES INC /MD/
5.72%
4.5M
+346,332 (+7.69%)
Jun 30, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC
5.17%
4.1M
+167,804 (+4.13%)
Jun 30, 2026

Current Ownership Distribution

  • Institutions1.1B (52.20%)
  • Mutual Funds995.8M (47.23%)
  • Insiders12.0M (0.57%)
  • Other0 (0.00%)

Insider Transactions

  • 0.57% (12.0M)
    Current InsiderOwnership (%, shares)
  • 0
    Number of InsiderBuying (last 12 months)
  • $0.00
    Amount of InsiderBuying (last 12 months)
  • 4
    Number of InsiderSelling (last 12 months)
  • $487.7M
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
SWARTZ DAVID L
Sell
Jun 18, 2026
$145,449.11
2,699
$53.89
177,013
BERGER HOWARD G
President, CEO
Gift
Jun 16, 2026
$0.00
90
$0.00
19,910
Forthuber Stephen M
Pres & CEO-Eastern Operations
Sell
Jun 15, 2026
$1.4M
24,214
$57.79
527,052
Forthuber Stephen M
Pres & CEO-Eastern Operations
Sell
Jun 15, 2026
$1.2M
19,853
$58.61
507,199
Sorensen Gregory
Chief Strategy Officer
Sell
Mar 19, 2026
$590,819.36
9,554
$61.84
1.2M
Sorensen Gregory
Chief Strategy Officer
Sell
Mar 19, 2026
$335,835.72
5,346
$62.82
1.2M
Sorensen Gregory
Chief Strategy Officer
Sell
Mar 19, 2026
$6,359.00
100
$63.59
1.2M
Sorensen Gregory
Chief Strategy Officer
Gift
Mar 19, 2026
$0.00
7,000
$0.00
1.2M
Sorensen Gregory
Chief Strategy Officer
Sell
Mar 18, 2026
$882,104.00
14,200
$62.12
1.2M
Sorensen Gregory
Chief Strategy Officer
Sell
Mar 18, 2026
$50,176.00
800
$62.72
1.2M
Sorensen Gregory
Chief Strategy Officer
In Kind
Mar 16, 2026
$365,320.68
5,919
$61.72
1.2M
STOLPER MARK
EVP, Chief Financial Officer
Award
Mar 03, 2026
$0.00
18,228
$0.00
121,943
Patel Mital
EVP of Fin Planning, CAO
Award
Mar 03, 2026
$0.00
20,667
$0.00
200,175
Murdock Michael N
EVP, Mergers and Acquisitions
Award
Mar 03, 2026
$0.00
6,613
$0.00
46,697
Wesdorp Cornelis
Pres & CEO, Digital Health
Award
Mar 03, 2026
$0.00
20,330
$0.00
73,825
HAMES NORMAN R
Pres and COO-West Operations
Award
Mar 03, 2026
$0.00
22,045
$0.00
261,228
BERGER HOWARD G
President, CEO
Award
Mar 03, 2026
$0.00
124,001
$0.00
472,413
Katz David Jeffrey
EVP and Chief Legal Officer
Award
Mar 03, 2026
$0.00
19,289
$0.00
90,866
Sorensen Gregory
EVP, Chief Science Officer
Award
Mar 03, 2026
$0.00
16,533
$0.00
1.2M
HAMES NORMAN R
Pres and COO-West Operations
Award
Mar 03, 2026
$0.00
3,100
$0.00
22,989
Forthuber Stephen M
Pres & COO-Eastern Operations
Award
Mar 03, 2026
$0.00
22,045
$0.00
551,266
Levitt Lawrence L
Gift
Nov 25, 2025
$0.00
2,700
$0.00
164,956
Patel Mital
EVP of Fin Planning, CAO
Sell
Nov 19, 2025
$1.2M
15,080
$80.05
180,138
Patel Mital
EVP of Fin Planning, CAO
Sell
Nov 18, 2025
$793,600.00
9,920
$80.00
195,218
Patel Mital
EVP of Fin Planning, CAO
Sell
Nov 17, 2025
$1.9M
25,000
$76.06
205,138
Murdock Michael N
EVP, Mergers and Acquisitions
Gift
Nov 13, 2025
$0.00
3,000
$0.00
40,084
STOLPER MARK
EVP, Chief Financial Officer
Sell
Sep 16, 2025
$2.6M
35,000
$73.89
68,012
Katz David Jeffrey
EVP and Chief Legal Officer
Gift
Sep 11, 2025
$0.00
4,593
$0.00
82,181
Wesdorp Cornelis
Pres & CEO, Digital Health
Sell
Sep 09, 2025
$35,995.00
500
$71.99
53,995
HAMES NORMAN R
Pres and COO-West Operations
Sell
Aug 27, 2025
$355,500.00
5,000
$71.10
19,889