RADNET INC (RDNT)
Institutional ownership reported to the SEC as of Q2 2026, across 31 quarters.
315
Reporting holders
$4.6B
Reported value
94.7%
Of shares outstanding
0.1%
Held as options
-8
Holder change
Institutions report 74,538,790 shares against 78,697,257 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end. A figure this high can overstate: where an adviser and a sub-adviser both report the same shares, both are counted.
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $675.8M | 10,957,808 | 0.01% | 8q | +9.2%+$56.9M |
| RTW INVESTMENTS, LP | $298.9M | 4,846,958 | 2.55% | 11q | +13.1%+$34.7M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $250.8M | 4,066,931 | 0.01% | 2q | +4.3%+$10.3M |
| VANGUARD CAPITAL MANAGEMENT LLC | $196.9M | 3,193,565 | 0.00% | 2q | +2.7%+$5.1M |
| BECK MACK & OLIVER LLC | $195.1M | 3,163,592 | 3.80% | 31q | HELD |
| STATE STREET CORP | $175.2M | 2,842,457 | 0.01% | 31q | +7.2%+$11.8M |
| GEODE CAPITAL MANAGEMENT, LLC | $114.6M | 1,858,508 | 0.01% | 31q | +7.8%+$8.3M |
| Invesco Ltd. | $101.2M | 1,641,292 | 0.01% | 31q | HELD |
| AMERICAN CENTURY COMPANIES INC | $99.8M | 1,618,424 | 0.04% | 25q | +79.4%+$44.2M |
| Clearbridge Investments, LLC | $95.4M | 1,546,652 | 0.08% | 10q | +21.0%+$16.5M |
| DIMENSIONAL FUND ADVISORS LP | $91.9M | 1,491,040 | 0.02% | 31q | +8.1%+$6.9M |
| Hood River Capital Management LLC | $89.8M | 1,456,205 | 0.65% | 13q | +3.2%+$2.8M |
| JB CAPITAL PARTNERS LP | $87.8M | 1,424,061 | 13.59% | 22q | HELD |
| BAMCO INC /NY/ | $77.8M | 1,260,992 | 0.12% | 10q | +55.7%+$27.8M |
| Defiance ETFs, LLC | $75.0M | 1,143,622 | 1.02% | 3q | +109.7%+$39.3M |
| GOLDMAN SACHS GROUP INC | $72.7M | 1,178,372 | 0.01% | 31q | -1.0%-$734.1K |
| Alyeska Investment Group, L.P. | $72.3M | 1,171,721 | 0.19% | 13q | -10.5%-$8.5M |
| PRINCIPAL FINANCIAL GROUP INC | $64.9M | 1,052,356 | 0.03% | 27q | -5.3%-$3.6M |
| WESTFIELD CAPITAL MANAGEMENT CO LP | $60.2M | 975,542 | 0.20% | 4q | +83.4%+$27.4M |
| MORGAN STANLEY | $57.4M | 931,114 | 0.00% | 35q | +9.5%+$5.0M |
| NORTHERN TRUST CORP | $50.1M | 813,056 | 0.01% | 31q | +8.9%+$4.1M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $48.9M | 792,282 | 0.01% | 31q | +3.2%+$1.5M |
| Sixth Street Partners Management Company, L.P. | $48.9M | 792,282 | 0.01% | new | NEW |
| Rockefeller Capital Management L.P. | $46.7M | 757,990 | 0.07% | 24q | +7.8%+$3.4M |
| AMERIPRISE FINANCIAL INC | $46.0M | 745,603 | 0.01% | 27q | -58.5%-$64.9M |
| Global Alpha Capital Management Ltd. | $45.3M | 734,875 | 2.72% | 31q | +11.6%+$4.7M |
| LOOMIS SAYLES & CO L P | $42.0M | 680,979 | 0.05% | 12q | -0.8%-$322.9K |
| Allspring Global Investments Holdings, LLC | $39.9M | 608,144 | 0.06% | 19q | -29.7%-$16.9M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $39.2M | 635,813 | 0.01% | 31q | -5.6%-$2.3M |
| PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC. | $39.1M | 633,272 | 1.93% | 28q | +6.4%+$2.3M |
| Nuveen, LLC | $39.0M | 631,797 | 0.01% | 6q | -4.5%-$1.8M |
| Polar Capital Holdings Plc | $38.4M | 623,029 | 0.09% | 4q | -15.1%-$6.9M |
| UBS Group AG | $38.2M | 619,635 | 0.00% | 31q | +27.3%+$8.2M |
| VOYA INVESTMENT MANAGEMENT LLC | $37.3M | 604,907 | 0.03% | 31q | +44.9%+$11.6M |
| VANGUARD FIDUCIARY TRUST CO | $31.3M | 507,472 | 0.01% | 2q | +6.5%+$1.9M |
| ROYAL BANK OF CANADA | $30.9M | 501,405 | 0.00% | 31q | +7.1%+$2.0M |
| DEUTSCHE BANK AG\ | $30.6M | 495,962 | 0.01% | 34q | +2.8%+$838.3K |
| Point72 Asset Management, L.P. | $30.4M | 492,437 | 0.03% | 3q | -42.4%-$22.4M |
| Public Sector Pension Investment Board | $30.0M | 486,222 | 0.04% | 27q | +95.1%+$14.6M |
| Alpha Wave Global, LP | $29.1M | 472,643 | 0.47% | 11q | -1.2%-$349.1K |
| NORGES BANK | $29.0M | 469,820 | 0.00% | 11q | +4.2%+$1.2M |
| MILLENNIUM MANAGEMENT LLC | $28.7M | 465,622 | 0.01% | 16q | +899.7%+$25.8M |
| NEUBERGER BERMAN GROUP LLC | $28.1M | 455,763 | 0.02% | 12q | -9.4%-$2.9M |
| E. Ohman J:or Asset Management AB | $27.9M | 452,966 | 0.65% | 12q | +1144.3%+$25.7M |
| Tidal Investments LLC | $27.1M | 439,560 | 0.05% | 9q | -0.6%-$159.4K |
| BANK OF AMERICA CORP /DE/ | $25.9M | 420,661 | 0.00% | 31q | -28.7%-$10.4M |
| Bank of New York Mellon Corp | $25.9M | 420,575 | 0.00% | 31q | +2.5%+$630.9K |
| RAYMOND JAMES FINANCIAL INC | $25.8M | 418,874 | 0.01% | 7q | -1.1%-$296.4K |
| EMERALD ADVISERS, LLC | $22.8M | 370,489 | 0.54% | 12q | -3.0%-$695.3K |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | $22.7M | 368,024 | 0.02% | 5q | +169.5%+$14.3M |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | $21.7M | 351,756 | 0.14% | 28q | -7.8%-$1.8M |
| JENNISON ASSOCIATES LLC | $21.0M | 341,261 | 0.01% | 8q | -3.9%-$853.8K |
| NEW YORK STATE COMMON RETIREMENT FUND | $20.3M | 328,854 | 0.03% | 31q | +10.1%+$1.9M |
| SEGALL BRYANT & HAMILL, LLC | $18.9M | 307,100 | 0.22% | 9q | +1.8%+$326.1K |
| WELLINGTON MANAGEMENT GROUP LLP | $17.3M | 280,019 | 0.00% | 12q | -29.3%-$7.1M |
| Penn Capital Management Company, LLC | $16.8M | 271,352 | 1.06% | 13q | -2.0%-$335.4K |
| WHITTIER TRUST CO | $16.5M | 238,975 | 0.16% | 9q | -1.0%-$174.6K |
| EMERALD MUTUAL FUND ADVISERS TRUST | $15.5M | 250,764 | 0.54% | 12q | HELD |
| WCM INVESTMENT MANAGEMENT, LLC | $15.0M | 253,448 | 0.03% | 7q | -1.5%-$233.0K |
| FRED ALGER MANAGEMENT, LLC | $13.4M | 217,394 | 0.04% | 7q | -36.4%-$7.7M |
| ROYCE & ASSOCIATES LP | $13.0M | 211,269 | 0.10% | 31q | +54.2%+$4.6M |
| SEI INVESTMENTS CO | $12.8M | 208,109 | 0.01% | 13q | -18.4%-$2.9M |
| PICTON MAHONEY ASSET MANAGEMENT | $12.5M | 202,005 | 0.09% | 12q | -34.7%-$6.6M |
| PALISADE CAPITAL MANAGEMENT, LP | $12.3M | 199,431 | 0.54% | 6q | -31.5%-$5.7M |
| First Eagle Investment Management, LLC | $12.0M | 195,036 | 0.02% | 19q | +107.2%+$6.2M |
| AGF MANAGEMENT LTD | $11.6M | 188,565 | 0.05% | 9q | +0.6%+$72.5K |
| SEB Asset Management AB | $11.1M | 180,298 | 0.04% | 2q | +135.1%+$6.4M |
| Granahan Investment Management, LLC | $10.6M | 171,637 | 0.38% | 2q | +64.6%+$4.2M |
| RHUMBLINE ADVISERS | $10.4M | 168,199 | 0.01% | 31q | -9.9%-$1.1M |
| Legal & General Group Plc | $9.8M | 158,695 | 0.00% | 31q | HELD |
| PARADIGM CAPITAL MANAGEMENT INC/NY | $9.6M | 155,400 | 0.26% | 29q | +184.1%+$6.2M |
| BNP PARIBAS FINANCIAL MARKETS | $9.2M | 149,581 | 0.00% | 31q | +29.4%+$2.1M |
| WHITTIER TRUST CO OF NEVADA INC | $8.2M | 121,590 | 0.15% | 9q | HELD |
| MAIRS & POWER INC | $8.2M | 133,116 | 0.08% | 5q | HELD |
| Swiss National Bank | $8.2M | 132,400 | 0.00% | 31q | +1.9%+$154.2K |
| CITIGROUP INC | $8.1M | 131,291 | 0.00% | 31q | +46.3%+$2.6M |
| Cerity Partners LLC | $7.7M | 124,503 | 0.01% | 11q | +0.8%+$62.7K |
| Pier Capital, LLC | $7.6M | 123,018 | 1.01% | 21q | +3.5%+$254.6K |
| ROBOTTI ROBERT | $7.5M | 120,972 | 1.20% | 31q | HELD |
| SOROS FUND MANAGEMENT LLC | $7.2M | 116,588 | 0.09% | 4q | -73.4%-$19.8M |
| Schonfeld Strategic Advisors LLC | $7.1M | 115,308 | 0.03% | new | NEW |
| Sequoia Financial Advisors, LLC | $7.1M | 115,120 | 0.04% | 6q | +1.9%+$131.2K |
| ENVESTNET ASSET MANAGEMENT INC | $6.2M | 100,935 | 0.00% | 12q | -1.9%-$117.5K |
| JPMORGAN CHASE & CO | $6.2M | 101,295 | 0.00% | 31q | -26.2%-$2.2M |
| WELLS FARGO & COMPANY/MN | $6.0M | 97,304 | 0.00% | 31q | -15.2%-$1.1M |
| BARCLAYS PLC | $5.9M | 96,115 | 0.00% | 31q | +641.5%+$5.1M |
| Temasek Holdings (Private) Ltd | $5.4M | 86,974 | 0.01% | new | NEW |
| Russell Investments Group, Ltd. | $5.1M | 83,497 | 0.00% | 29q | +46.0%+$1.6M |
| ALLIANCEBERNSTEIN L.P. | $5.1M | 91,487 | 0.00% | 31q | -19.1%-$1.2M |
| Holocene Advisors, LP | $5.0M | 80,436 | 0.01% | 2q | -33.1%-$2.4M |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | $4.9M | 80,081 | 0.01% | new | NEW |
| Hilton Capital Management, LLC | $4.8M | 78,427 | 0.33% | 6q | +5.2%+$237.5K |
| Man Group plc | $4.7M | 76,807 | 0.01% | 2q | +34.3%+$1.2M |
| PRUDENTIAL FINANCIAL INC | $4.5M | 73,238 | 0.00% | 27q | +2.7%+$117.5K |
| STATE OF WISCONSIN INVESTMENT BOARD | $4.4M | 71,938 | 0.01% | 12q | -6.1%-$290.0K |
| D.A. DAVIDSON & CO. | $4.0M | 65,657 | 0.02% | 4q | HELD |
| VANGUARD ASSET MANAGEMENT, Ltd | $4.0M | 65,399 | 0.00% | 2q | +5.3%+$203.3K |
| Balyasny Asset Management L.P. | $3.7M | 60,683 | 0.00% | 4q | +77.2%+$1.6M |
| Louisiana State Employees Retirement System | $3.6M | 61,900 | 0.03% | 27q | +100.3%+$1.8M |
| EFG International AG | $3.4M | 54,436 | 0.06% | 3q | +46.5%+$1.1M |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-08-14 | 13G/A | RTW Investments, LPwith 1 co-filers | 6.2% |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 315 | $4.6B | 74,538,790 | 40 | 113 | 107 | 0.1% |
| Q1 2026 | 323 | $4.0B | 71,272,787 | 41 | 118 | 93 | 0.3% |
| Q4 2025 | 325 | $5.2B | 71,110,830 | 47 | 99 | 107 | 2.0% |
| Q3 2025 | 304 | $5.2B | 68,583,317 | 41 | 120 | 83 | 0.2% |
| Q2 2025 | 303 | $3.9B | 68,220,644 | 41 | 127 | 78 | 0.1% |
| Q1 2025 | 288 | $3.3B | 64,768,719 | 40 | 111 | 92 | 1.9% |
| Q4 2024 | 300 | $4.3B | 60,645,653 | 42 | 98 | 95 | 0.3% |
| Q3 2024 | 271 | $4.2B | 60,456,480 | 43 | 85 | 82 | 0.6% |
| Q2 2024 | 251 | $3.4B | 58,051,866 | 44 | 81 | 84 | 0.6% |
| Q1 2024 | 244 | $2.9B | 58,279,750 | 70 | 76 | 59 | 0.5% |
| Q4 2023 | 190 | $1.8B | 52,300,287 | 30 | 56 | 59 | 0.6% |
| Q3 2023 | 170 | $1.4B | 50,724,893 | 33 | 65 | 43 | 0.5% |
| Q2 2023 | 163 | $1.6B | 49,791,251 | 39 | 60 | 34 | 0.7% |
| Q1 2023 | 127 | $965.1M | 38,274,714 | 18 | 39 | 42 | 0.7% |
| Q4 2022 | 113 | $655.1M | 34,632,773 | 11 | 43 | 35 | 0.5% |
| Q3 2022 | 149 | $803.7M | 39,251,923 | 18 | 62 | 35 | 0.6% |
| Q2 2022 | 147 | $676.0M | 38,918,828 | 10 | 60 | 47 | 0.5% |
| Q1 2022 | 161 | $851.4M | 37,902,573 | 9 | 72 | 46 | 0.5% |
| Q4 2021 | 172 | $1.1B | 36,142,173 | 17 | 52 | 53 | 1.1% |
| Q3 2021 | 178 | $1.0B | 35,331,881 | 25 | 52 | 65 | 0.7% |
| Q2 2021 | 170 | $1.2B | 35,697,673 | 39 | 56 | 49 | 0.7% |
| Q1 2021 | 143 | $768.3M | 35,235,336 | 15 | 44 | 53 | 0.2% |
| Q4 2020 | 140 | $679.9M | 34,697,681 | 14 | 46 | 46 | 0.2% |
| Q3 2020 | 135 | $536.2M | 34,823,820 | 13 | 38 | 50 | 0.3% |
| Q2 2020 | 135 | $554.7M | 34,758,154 | 17 | 42 | 48 | 0.6% |
| Q1 2020 | 151 | $377.5M | 36,000,541 | 20 | 55 | 47 | 0.2% |
| Q4 2019 | 147 | $749.9M | 36,845,766 | 36 | 39 | 43 | 0.2% |
| Q3 2019 | 117 | $464.2M | 32,238,594 | 13 | 48 | 25 | 0.3% |
| Q2 2019 | 123 | $458.8M | 31,405,100 | 19 | 40 | 40 | 5.6% |
| Q1 2019 | 129 | $413.3M | 32,079,258 | 25 | 35 | 46 | 3.8% |
| Q4 2018 | 124 | $325.0M | 31,861,253 | 3 | 2 | 4 | 0.3% |