RadNet, Inc.
RDNT- Exchange
- Nasdaq
- Industry
- Services-Medical Laboratories
- SEC CIK
- 0000790526
No open-market purchases or sales by RadNet, Inc. insiders were filed in the last 90 days; 328 institutions reported holding it in 13F filings for Q2 2026, worth $5.03B in total; Soros Fund Management is the only superinvestor holding it.
13F holders, Q1 2026
Institutional positions in RadNet, Inc. as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 340
- +5 vs. Q4 2025
- Shares held
- 77.1M
- +8.82M (+12.9%) vs. Q4 2025
- Total value
- $4.31B
- −$563.5M (−11.6%) vs. Q4 2025
- New holders
- 52
- 137 more added
- Sold out
- 47
- 102 more reduced
7 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting RDNT on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 328 | $5.03B |
| Q1 2026 | 340 | $4.31B |
| Q4 2025 | 342 | $5.44B |
| Q3 2025 | 328 | $5.65B |
| Q2 2025 | 328 | $4.03B |
| Q1 2025 | 307 | $3.43B |
| Q4 2024 | 330 | $4.49B |
| Q3 2024 | 303 | $4.42B |
| Q2 2024 | 277 | $3.60B |
| Q1 2024 | 277 | $2.91B |
| Q4 2023 | 214 | $1.86B |
| Q3 2023 | 191 | $1.49B |
| Q2 2023 | 185 | $1.66B |
| Q1 2023 | 152 | $1.00B |
| Q4 2022 | 145 | $744.5M |
| Q3 2022 | 153 | $798.7M |
| Q2 2022 | 152 | $672.9M |
| Q1 2022 | 164 | $847.5M |
| Q4 2021 | 171 | $1.08B |
| Q3 2021 | 179 | $1.04B |
| Q2 2021 | 169 | $1.20B |
| Q1 2021 | 142 | $764.5M |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding RadNet, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| UBS Group AG | 486,659 | $27.2M | 0.00% | +171,221+54.3% | Added |
| Neuberger Berman Group LLC | 503,172 | $28.1M | 0.02% | −85,813−14.6% | Reduced |
| Westfield Capital Management Co LP | 531,893 | $29.7M | 0.12% | +1320.0% | Added |
| Penserra Capital Management LLC | 545,474 | $30.5M | 0.36% | +27,652+5.3% | Added |
| Defiance ETFs, LLC | 545,474 | $30.5M | 0.44% | +27,652+5.3% | Added |
| Bessemer Group Inc | 550,172 | $30.7M | 0.05% | +56,173+11.4% | Added |
| Bank of America Corp | 589,610 | $33.0M | 0.00% | +77,198+15.1% | Added |
| Punch & Associates Investment Management, Inc. | 595,280 | $33.3M | 1.92% | −55,889−8.6% | Reduced |
| Global Alpha Capital Management Ltd. | 658,208 | $36.8M | 2.21% | +170,039+34.8% | Added |
| Nuveen, LLC | 661,282 | $37.0M | 0.01% | −37,123−5.3% | Reduced |
| UBS Asset Management Americas Inc | 673,249 | $37.6M | 0.01% | −15,981−2.3% | Reduced |
| Loomis Sayles & Co L P | 686,215 | $38.4M | 0.05% | −57,257−7.7% | Reduced |
| Rockefeller Capital Management L.P. | 703,116 | $39.3M | 0.07% | +70,849+11.2% | Added |
| Polar Capital Holdings Plc | 734,253 | $41.0M | 0.18% | +76,202+11.6% | Added |
| Northern Trust Corp | 746,807 | $41.7M | 0.01% | +17,325+2.4% | Added |
| Charles Schwab Investment Management Inc | 767,471 | $42.9M | 0.01% | +9,167+1.2% | Added |
| Fuller & Thaler Asset Management, Inc. | 806,296 | $45.1M | 0.15% | +37,832+4.9% | Added |
| Bamco Inc | 810,066 | $45.3M | 0.14% | 00.0% | Unchanged |
| Morgan Stanley | 850,471 | $47.5M | 0.00% | −99,500−10.5% | Reduced |
| Point72 Asset Management, L.P. | 855,372 | $47.8M | 0.08% | +597,759+232.0% | Added |
| Allspring Global Investments Holdings, LLC | 865,404 | $47.9M | 0.08% | −182,923−17.4% | Reduced |
| Ameriprise Financial Inc | 899,126 | $50.2M | 0.01% | −221,018−19.7% | Reduced |
| American Century Companies Inc | 902,192 | $50.4M | 0.03% | −5,840−0.6% | Reduced |
| Van Berkom & Associates Inc. | 1,028,586 | $57.5M | 1.87% | +204,858+24.9% | Added |
| Principal Financial Group Inc | 1,111,277 | $62.1M | 0.03% | −21,812−1.9% | Reduced |
| Goldman Sachs Group Inc | 1,190,275 | $66.5M | 0.01% | +70,233+6.3% | Added |
| Clearbridge Investments, LLC | 1,278,540 | $71.5M | 0.06% | +163,567+14.7% | Added |
| Alyeska Investment Group, L.P. | 1,309,308 | $73.2M | 0.21% | +157,015+13.6% | Added |
| Dimensional Fund Advisors LP | 1,379,003 | $77.1M | 0.02% | +19,188+1.4% | Added |
| Hood River Capital Management LLC | 1,411,497 | $78.9M | 0.79% | +15,606+1.1% | Added |
| JB Capital Partners LP | 1,424,061 | $79.6M | 13.71% | 00.0% | Unchanged |
| Invesco Ltd. | 1,633,495 | $91.3M | 0.01% | +36,715+2.3% | Added |
| Geode Capital Management, LLC | 1,723,607 | $96.4M | 0.01% | +52,064+3.1% | Added |
| State Street Corp | 2,651,598 | $148.2M | 0.01% | +72,525+2.8% | Added |
| Vanguard Capital Management LLC | 3,111,012 | $173.9M | 0.00% | +3,111,012 | New |
| Beck Mack & Oliver LLC | 3,166,192 | $177.0M | 3.65% | −65,259−2.0% | Reduced |
| Vanguard Portfolio Management LLC | 3,899,127 | $217.9M | 0.01% | +3,899,127 | New |
| Price T Rowe Associates Inc | 4,154,863 | $232.2M | 0.03% | +1,455,781+53.9% | Added |
| RTW Investments, LP | 4,285,000 | $239.5M | 2.38% | +346,500+8.8% | Added |
| BlackRock, Inc. | 10,035,734 | $560.9M | 0.01% | +14,714+0.1% | Added |
| T. Rowe Price Investment Management, Inc. | 0 | $0 | 0.00% | −822,723−100.0% | Sold out |
| Adage Capital Partners GP, L.L.C. | 0 | $0 | 0.00% | −476,626−100.0% | Sold out |
| Integral Health Asset Management, LLC | 0 | $0 | 0.00% | −200,000−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −195,978−100.0% | Sold out |
| Kingdon Capital Management, L.L.C. | 0 | $0 | 0.00% | −110,000−100.0% | Sold out |
| Skandinaviska Enskilda Banken AB (publ) | 0 | $0 | 0.00% | −77,341−100.0% | Sold out |
| TD Asset Management Inc | 0 | $0 | 0.00% | −56,110−100.0% | Sold out |
| Deerfield Management Company, L.P. (Series C) | 0 | $0 | 0.00% | −49,951−100.0% | Sold out |
| Rhenman & Partners Asset Management AB | 0 | $0 | 0.00% | −47,000−100.0% | Sold out |
| NewGen Asset Management Ltd | 0 | $0 | 0.00% | −25,000−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −24,495−100.0% | Sold out |
| Nations Financial Group Inc, | 0 | $0 | 0.00% | −15,674−100.0% | Sold out |
| Mangrove Partners | 0 | $0 | 0.00% | −11,694−100.0% | Sold out |
| Assenagon Asset Management S.A. | 0 | $0 | 0.00% | −10,590−100.0% | Sold out |
| Ellsworth Advisors, LLC | 0 | $0 | 0.00% | −10,158−100.0% | Sold out |
| Entropy Technologies, LP | 0 | $0 | 0.00% | −10,312−100.0% | Sold out |
| Guidance Capital, Inc | 0 | $0 | 0.00% | −8,864−100.0% | Sold out |
| Tiaa Trust, National Association | 0 | $0 | 0.00% | −7,375−100.0% | Sold out |
| Foundations Investment Advisors, LLC | 0 | $0 | 0.00% | −5,924−100.0% | Sold out |
| Canada Pension Plan Investment Board | 0 | $0 | 0.00% | −5,700−100.0% | Sold out |
| Navellier & Associates Inc | 0 | $0 | 0.00% | −5,129−100.0% | Sold out |
| Profund Advisors LLC | 0 | $0 | 0.00% | −5,036−100.0% | Sold out |
| Taproot Management LP | 0 | $0 | 0.00% | −4,920−100.0% | Sold out |
| Y-Intercept (Hong Kong) Ltd | 0 | $0 | 0.00% | −4,749−100.0% | Sold out |
| Thompson Davis & Co., Inc. | 0 | $0 | 0.00% | −4,300−100.0% | Sold out |
| Mackenzie Financial Corp | 0 | $0 | 0.00% | −4,279−100.0% | Sold out |
| Colony Group, LLC | 0 | $0 | 0.00% | −4,272−100.0% | Sold out |
| Mutual Advisors, LLC | 0 | $0 | 0.00% | −3,570−100.0% | Sold out |
| Captrust Financial Advisors | 0 | $0 | 0.00% | −3,343−100.0% | Sold out |
| RSM US Wealth Management LLC | 0 | $0 | 0.00% | −3,168−100.0% | Sold out |
| HSBC Holdings PLC | 0 | $0 | 0.00% | −3,113−100.0% | Sold out |
| Modera Wealth Management, LLC | 0 | $0 | 0.00% | −3,008−100.0% | Sold out |
| O'Rourke & Company, Inc | 0 | $0 | 0.00% | −3,000−100.0% | Sold out |
| Quest Partners LLC | 0 | $0 | 0.00% | −1,615−100.0% | Sold out |
| Kestra Advisory Services, LLC | 0 | $0 | 0.00% | −935−100.0% | Sold out |
| Brown Brothers Harriman & Co | 0 | $0 | 0.00% | −550−100.0% | Sold out |
| Danske Bank A/S | 0 | $0 | 0.00% | −400−100.0% | Sold out |
| Geneos Wealth Management Inc. | 0 | $0 | 0.00% | −353−100.0% | Sold out |
| Plante Moran Financial Advisors, LLC | 0 | $0 | 0.00% | −320−100.0% | Sold out |
| SageView Advisory Group, LLC | 0 | $0 | 0.00% | −95−100.0% | Sold out |
| MPWM Advisory Solutions, LLC | 0 | $0 | 0.00% | −95−100.0% | Sold out |
| Caitlin John, LLC | 0 | $0 | 0.00% | −85−100.0% | Sold out |
| SRS Capital Advisors, Inc. | 0 | $0 | 0.00% | −36−100.0% | Sold out |
| Flagship Harbor Advisors, LLC | 0 | $0 | 0.00% | −27−100.0% | Sold out |
| Ronald Blue Trust, Inc. | 0 | $0 | 0.00% | −5−100.0% | Sold out |
| Larson Financial Group LLC | 0 | $0 | 0.00% | −2−100.0% | Sold out |
| Essential Partners LLC | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |
| Norges Bank | – | – | – | – | Not filed |
| Comerica Bank | – | – | – | – | Not filed |
| CIBC World Markets Corp | – | – | – | – | Not filed |
| CIBC Private Wealth Group, LLC | – | – | – | – | Not filed |
| Global Retirement Partners, LLC | – | – | – | – | Not filed |
| ORG Partners LLC | – | – | – | – | Not filed |