Who owns RadNet, Inc.?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of RDNT from SEC Form 13F filings across 329 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 329 institutions disclosed 81.4M shares of RadNet, Inc. worth $5.03B — about 104.6% of shares outstanding; the largest disclosed holder is BlackRock, Inc.. Source: SEC Form 13F filings, parsed by EvidInvest.
329
13F holders
$5.03B
value, 2026 filers
104.6%
of shares outstanding (81.4M sh)
43
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of RDNT's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 11.0M | $675.8M | 0.0% | 14.1% | +9.2% |
| 2 | RTW INVESTMENTS, LP | 4.8M | $298.9M | 2.6% | 6.2% | +13.1% |
| 3 | PRICE T ROWE ASSOCIATES INC /MD/ | 4.5M | $277.6M | 0.0% | 5.8% | +8.3% |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | 4.1M | $250.8M | 0.0% | 5.2% | +4.3% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 3.2M | $196.9M | 0.0% | 4.1% | +2.7% |
| 6 | BECK MACK & OLIVER LLC | 3.2M | $195.1M | 3.8% | 4.1% | -0.1% |
| 7 | STATE STREET CORP | 2.8M | $175.2M | 0.0% | 3.7% | +7.2% |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | 1.9M | $114.6M | 0.0% | 2.4% | +7.8% |
| 9 | Invesco Ltd. | 1.6M | $101.2M | 0.0% | 2.1% | +0.5% |
| 10 | AMERICAN CENTURY COMPANIES INC | 1.6M | $99.8M | 0.0% | 2.1% | +79.4% |
| 11 | Clearbridge Investments, LLC | 1.5M | $95.4M | 0.1% | 2% | +21.0% |
| 12 | DIMENSIONAL FUND ADVISORS LP | 1.5M | $91.9M | 0.0% | 1.9% | +8.1% |
| 13 | Hood River Capital Management LLC | 1.5M | $89.8M | 0.7% | 1.9% | +3.2% |
| 14 | JB CAPITAL PARTNERS LP | 1.4M | $87.8M | 13.6% | 1.8% | 0.0% |
| 15 | BAMCO INC /NY/ | 1.3M | $77.8M | 0.1% | 1.6% | +55.7% |
| 16 | Van Berkom & Associates Inc. | 1.2M | $73.6M | 2.4% | 1.5% | +16.0% |
| 17 | GOLDMAN SACHS GROUP INC | 1.2M | $72.7M | 0.0% | 1.5% | -1.0% |
| 18 | Alyeska Investment Group, L.P. | 1.2M | $72.3M | 0.2% | 1.5% | -10.5% |
| 19 | Penserra Capital Management LLC | 1.1M | $70.5M | 0.5% | 1.5% | +109.7% |
| 20 | Defiance ETFs, LLC | 1.1M | $75.0M | 1.0% | 1.5% | +109.7% |
| 21 | PRINCIPAL FINANCIAL GROUP INC | 1.1M | $64.9M | 0.0% | 1.4% | -5.3% |
| 22 | WESTFIELD CAPITAL MANAGEMENT CO LP | 975,542 | $60.2M | 0.2% | 1.3% | +83.4% |
| 23 | MORGAN STANLEY | 931,114 | $57.4M | 0.0% | 1.2% | +9.5% |
| 24 | NORTHERN TRUST CORP | 813,056 | $50.1M | 0.0% | 1% | +8.9% |
| 25 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 792,282 | $48.9M | 0.0% | 1% | +3.2% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.