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 |
|---|---|---|---|---|---|
| Great West Life Assurance Co | 57,413 | $3.21M | 0.01% | −2,196−3.7% | Reduced |
| Man Group plc | 57,201 | $3.20M | 0.01% | +57,201 | New |
| Russell Investments Group, Ltd. | 57,198 | $3.20M | 0.00% | −9,273−14.0% | Reduced |
| Verition Fund Management LLC | 55,691 | $3.11M | 0.03% | +24,991+81.4% | Added |
| Pathstone Holdings, LLC | 55,462 | $3.10M | 0.01% | −2,434−4.2% | Reduced |
| Paradigm Capital Management Inc | 54,700 | $3.06M | 0.12% | 00.0% | Unchanged |
| Axiom Investors LLC | 51,038 | $2.85M | 0.03% | −54,241−51.5% | Reduced |
| D. E. Shaw & Co., Inc. | 50,474 | $2.82M | 0.00% | +50,474 | New |
| Gilder Gagnon Howe & Co LLC | 49,492 | $2.77M | 0.03% | −3,213−6.1% | Reduced |
| Millennium Management LLC | 46,578 | $2.60M | 0.00% | −334,383−87.8% | Reduced |
| Susquehanna International Group, LLP | 45,091 | $2.52M | 0.00% | +35,716+381.0% | Added |
| Victory Capital Management Inc | 43,902 | $2.45M | 0.00% | −1,235−2.7% | Reduced |
| Knights of Columbus Asset Advisors LLC | 42,872 | $2.40M | 0.14% | −551−1.3% | Reduced |
| Portland Investment Counsel Inc. | 42,000 | $2.35M | 0.75% | 00.0% | Unchanged |
| Edgestream Partners, L.P. | 41,617 | $2.33M | 0.08% | +30,479+273.6% | Added |
| Prescott Group Capital Management, L.L.C. | 41,611 | $2.33M | 0.23% | 00.0% | Unchanged |
| Rathbone Brothers plc | 41,328 | $2.31M | 0.01% | 00.0% | Unchanged |
| Miracle Mile Advisors, LLC | 40,706 | $2.28M | 0.03% | +35,703+713.6% | Added |
| Congress Asset Management Co | 40,631 | $2.27M | 0.02% | +40,631 | New |
| Natixis Advisors, L.P. | 40,548 | $2.27M | 0.00% | −2,459−5.7% | Reduced |
| Illinois Municipal Retirement Fund | 40,344 | $2.25M | 0.03% | +60+0.1% | Added |
| Fieldview Capital Management, LLC | 39,509 | $2.21M | 0.64% | +39,509 | New |
| State of Alaska, Department of Revenue | 38,648 | $2.16M | 0.02% | −1,014−2.6% | Reduced |
| Future Fund LLC | 38,198 | $2.13M | 0.75% | +7,928+26.2% | Added |
| One Capital Management, LLC | 38,198 | $2.13M | 0.06% | +7,928+26.2% | Added |
| New York State Teachers Retirement System | 38,184 | $2.13M | 0.00% | −2,271−5.6% | Reduced |
| Creative Planning | 37,739 | $2.11M | 0.00% | +1,422+3.9% | Added |
| Lido Advisors, LLC | 37,367 | $2.09M | 0.01% | +67+0.2% | Added |
| MetLife Investment Management | 37,317 | $2.09M | 0.01% | −568−1.5% | Reduced |
| White Pine Capital LLC | 37,187 | $2.08M | 0.57% | +60.0% | Added |
| EFG International AG | 37,157 | $2.08M | 0.04% | −2,008−5.1% | Reduced |
| LPL Financial LLC | 36,640 | $2.05M | 0.00% | −5,732−13.5% | Reduced |
| E. Ohman J:or Asset Management AB | 36,403 | $2.03M | 0.05% | +5,737+18.7% | Added |
| Teachers Retirement System of the State of Kentucky | 36,190 | $2.02M | 0.02% | −3,407−8.6% | Reduced |
| Scotia Capital Inc. | 36,148 | $2.02M | 0.01% | +189+0.5% | Added |
| Oak Ridge Investments LLC | 34,699 | $1.94M | 0.13% | +345+1.0% | Added |
| Manufacturers Life Insurance Company, The | 34,460 | $1.93M | 0.00% | −18,543−35.0% | Reduced |
| Balyasny Asset Management LLC | 34,246 | $1.91M | 0.00% | −159,952−82.4% | Reduced |
| Fifth Third Bancorp | 34,224 | $1.91M | 0.00% | +33,714+6,610.6% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 32,050 | $1.79M | 0.00% | +347+1.1% | Added |
| State of New Jersey Common Pension Fund D | 31,900 | $1.78M | 0.01% | +4,653+17.1% | Added |
| Louisiana State Employees Retirement System | 30,900 | $1.73M | 0.03% | −900−2.8% | Reduced |
| Magnetar Financial LLC | 30,849 | $1.72M | 0.02% | +19,755+178.1% | Added |
| Intech Investment Management LLC | 30,053 | $1.68M | 0.02% | −12,931−30.1% | Reduced |
| SG Americas Securities, LLC | 29,748 | $1.66M | 0.00% | −528−1.7% | Reduced |
| B. Metzler seel. Sohn & Co. AG | 29,748 | $1.66M | 0.02% | 00.0% | Unchanged |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 29,415 | $1.64M | 0.00% | +5,268+21.8% | Added |
| Vanguard Global Advisers, LLC | 28,293 | $1.58M | 0.00% | +28,293 | New |
| Janus Henderson Group PLC | 27,987 | $1.56M | 0.00% | 00.0% | Unchanged |
| Brookwood Investment Group LLC | 27,265 | $1.52M | 0.19% | 00.0% | Unchanged |
| Expect Equity LLC | 26,632 | $1.49M | 1.16% | +8,300+45.3% | Added |
| Campbell Newman Asset Management Inc | 25,488 | $1.42M | 0.12% | +640+2.6% | Added |
| Steel Peak Wealth Management LLC | 25,100 | $1.40M | 0.04% | 00.0% | Unchanged |
| Handelsbanken Fonder AB | 23,800 | $1.33M | 0.00% | 00.0% | Unchanged |
| Portolan Capital Management, LLC | 23,728 | $1.33M | 0.07% | −93,778−79.8% | Reduced |
| Citadel Advisors LLC | 23,679 | $1.32M | 0.00% | +23,679 | New |
| Vontobel Holding Ltd. | 22,874 | $1.28M | 0.00% | +19,398+558.1% | Added |
| Zions Bancorporation, National Association | 22,834 | $1.28M | 0.08% | −5,762−20.1% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 22,774 | $1.27M | 0.00% | +2,097+10.1% | Added |
| XTX Topco Ltd | 22,572 | $1.26M | 0.02% | +22,572 | New |
| Allstate Corp | 22,263 | $1.24M | 0.01% | +22,263 | New |
| GWM Advisors LLC | 20,212 | $1.13M | 0.00% | +1,355+7.2% | Added |
| Westmount Partners, LLC | 20,000 | $1.12M | 0.28% | 00.0% | Unchanged |
| Amalgamated Bank | 19,977 | $1.12M | 0.01% | −194−1.0% | Reduced |
| Jones Financial Companies LLLP | 19,871 | $1.12M | 0.00% | +19,268+3,195.4% | Added |
| Sterling Capital Management LLC | 19,711 | $1.10M | 0.02% | −8,552−30.3% | Reduced |
| Yousif Capital Management, LLC | 19,203 | $1.07M | 0.01% | −64−0.3% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 18,583 | $1.04M | 0.01% | 00.0% | Unchanged |
| Arizona State Retirement System | 18,043 | $1.01M | 0.01% | −136−0.7% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 17,225 | $962.7K | 0.00% | +36+0.2% | Added |
| Formula Growth Ltd | 17,176 | $960.0K | 0.43% | 00.0% | Unchanged |
| State Board of Administration of Florida Retirement System | 16,991 | $949.6K | 0.00% | 00.0% | Unchanged |
| Vanguard Investments Australia, Ltd. | 16,408 | $917.0K | 0.00% | +16,408 | New |
| Oregon Public Employees Retirement Fund | 15,953 | $891.6K | 0.01% | +100+0.6% | Added |
| Keybank National Association | 15,848 | $885.7K | 0.00% | +70+0.4% | Added |
| Federation des caisses Desjardins du Quebec | 15,563 | $869.8K | 0.00% | −978−5.9% | Reduced |
| AQR Capital Management LLC | 15,545 | $868.8K | 0.00% | +381+2.5% | Added |
| State of Tennessee, Treasury Department | 15,388 | $860.0K | 0.00% | −2,533−14.1% | Reduced |
| F/M Investments LLC | 14,899 | $832.7K | 0.06% | −649−4.2% | Reduced |
| KLP Kapitalforvaltning AS | 14,500 | $810.4K | 0.00% | +500+3.6% | Added |
| StoneX Group Inc. | 13,437 | $751.0K | 0.04% | 00.0% | Unchanged |
| Barclays PLC | 12,962 | $724.4K | 0.00% | −93,535−87.8% | Reduced |
| Summit Financial, LLC | 12,668 | $708.0K | 0.01% | +105+0.8% | Added |
| Northwest & Ethical Investments L.P. | 12,854 | $707.7K | 0.02% | +3,927+44.0% | Added |
| HighTower Advisors, LLC | 12,551 | $701.5K | 0.00% | +1,065+9.3% | Added |
| Brave Asset Management Inc | 11,791 | $659.0K | 0.16% | 00.0% | Unchanged |
| Pictet Asset Management Holding SA | 11,110 | $620.9K | 0.00% | +705+6.8% | Added |
| Odyssean, LLC | 10,969 | $613.1K | 0.22% | +10,969 | New |
| Steigerwald, Gordon & Koch Inc. | 10,665 | $596.1K | 0.06% | +1,370+14.7% | Added |
| ProShare Advisors LLC | 10,641 | $594.7K | 0.00% | −2,653−20.0% | Reduced |
| Oppenheimer & Co Inc | 10,432 | $583.0K | 0.01% | +4,203+67.5% | Added |
| Maryland State Retirement & Pension System | 10,190 | $569.5K | 0.01% | 00.0% | Unchanged |
| Royal Palms Capital LLC | 10,000 | $558.9K | 0.55% | 00.0% | Unchanged |
| Boothbay Fund Management, LLC | 9,911 | $553.9K | 0.01% | +9,911 | New |
| Fulton Bank, N.A. | 9,235 | $516.1K | 0.02% | −115−1.2% | Reduced |
| CWM Advisors, LLC | 9,119 | $509.7K | 0.03% | +2,530+38.4% | Added |
| Advisors Asset Management, Inc. | 8,819 | $492.9K | 0.01% | +1,547+21.3% | Added |
| Tudor Investment Corp Et Al | 8,781 | $490.8K | 0.00% | +8,781 | New |
| Walleye Trading LLC | 8,609 | $481.2K | 0.01% | +8,609 | New |
| US Bancorp | 8,165 | $456.3K | 0.00% | −11,845−59.2% | Reduced |