RadNet
RDNT · NASDAQ
$69.65+$0.38 (+0.55%)TodayMarket closed ·
Prev close $69.27
Who owns RDNT
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 50.8% of RDNT’s shares.
- BlackRock Institutional Trust Company, N.A.12.0%
- RTW Investments L.P.6.2%
- Kaminsky (Sandy Nyholm)5.8%
- T. Rowe Price Associates, Inc.5.6%
- Next 6 largest institutions21.3%
- All other shareholders49.2%
| Holder | Shares | % of shares |
|---|---|---|
| BlackRock Institutional Trust Company, N.A. | 9.41M | 11.97% |
| RTW Investments L.P. | 4.85M | 6.16% |
| Kaminsky (Sandy Nyholm) | 4.55M | 5.79% |
| T. Rowe Price Associates, Inc. | 4.40M | 5.60% |
| Vanguard Portfolio Management, LLC | 4.07M | 5.17% |
| Vanguard Capital Management, LLC | 3.19M | 4.06% |
| Beck, Mack & Oliver LLC | 3.16M | 4.02% |
| State Street Investment Management (US) | 2.84M | 3.61% |
| Geode Capital Management, L.L.C. | 1.86M | 2.36% |
| American Century Investment Management, Inc. | 1.62M | 2.06% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| iShares Core S&P Small-Cap ETF | 3.51M | 4.47% |
| Vanguard Total Stock Market Index Fund | 2.26M | 2.88% |
| iShares Russell 2000 ETF | 1.83M | 2.33% |
| T. Rowe Price Mid-Cap Value Fund | 1.76M | 2.23% |
| Vanguard Small-Cap Index Fund | 1.63M | 2.07% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders sold $2.71M (3 trades) of RDNT on the open market, with no buys.
| Insider | Type | Shares | Value |
|---|---|---|---|
| SWARTZ DAVID L | Sale | 2.70K | $145.45K |
| Berger Howard G | Gift | 90 | — |
| Forthuber Stephen M | Sale | 19.85K | $1.16M |
| Forthuber Stephen M | Sale | 24.21K | $1.40M |
| Jacobs Laura Pastre | Award | 2.95K | — |
| SPURLOCK GREGORY E. | Award | 2.95K | — |
| Levitt Lawrence L | Award | 2.95K | — |
| SWARTZ DAVID L | Award | 2.95K | — |
| Berger Howard G | Option exercise | 25.99K | — |
| Berger Howard G | Option exercise | 25.99K | $484.49K |
Short interest
Settled Sep 30, 2026
- Shares short
- 9.36M
- Days to cover
- 12.84
- % of shares outstanding
- 11.91%
- Average daily volume
- 729.30K
- Change since last report
- −3.2%
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