RDNT · RadNet, Inc. · Holdings
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Institutional Ownership Trend
Superinvestors Holding RDNT
All superinvestors →Holder Concentration
Across 331 13F filersWho Holds RDNT
Last 8 quarters through Sep 30, 2026 (filing window open)Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026, the newest closed quarter: 328 filers, like-for-like change +4.9%; actively managed books +4.4%; index-like books +6.2%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 56.0% | 165 | +6.6% |
| Exempt adviser | 0.0% | 1 | new |
| Adviser | 3.8% | 6 | -14.3% |
| Bank | 7.5% | 21 | +6.6% |
| Insurer | 1.4% | 3 | -5.7% |
| Broker-dealer | 0.0% | 1 | -51.6% |
| Benefit plan | 0.2% | 6 | -1.1% |
| Non-US | 2.6% | 12 | +13.5% |
| Holding company | 18.2% | 12 | +2.8% |
| Unknown | 10.1% | 101 | +8.3% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 31.5% | 37 | +6.2% |
| Systematic-like | 2.7% | 6 | -21.9% |
| Concentrated | 4.5% | 51 | +14.3% |
| Diversified active | 61.3% | 234 | +5.3% |
| Not measured | 0.0% | 0 | — |
| Unknown | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 59.7% | 210 | +4.4% |
| Medium turnover | 25.1% | 77 | +9.2% |
| High turnover | 3.1% | 15 | -28.6% |
| Unknown | 12.1% | 26 | +12.6% |
| Not measured | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 11.5% | 24 | +7.0% |
| Medium horizon | 15.7% | 44 | +7.3% |
| Long horizon | 64.9% | 239 | +5.5% |
| Unknown | 7.9% | 21 | -5.6% |
| Not measured | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 2.5% | 53 | +2.1% |
| $1B to $10B | 13.1% | 93 | +9.4% |
| $10B to $100B | 24.7% | 115 | +1.0% |
| $100B or more | 59.7% | 67 | +5.8% |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 7.1% | 83 | +0.2% |
| Pooled investment vehicles | 10.5% | 17 | -1.0% |
| Registered funds and BDCs | 28.2% | 30 | +8.3% |
| Pension and profit sharing plans | 0.0% | 1 | -8.4% |
| Insurance companies | 0.9% | 4 | +38.4% |
| Charitable organizations | 0.0% | 1 | new |
| Governments and sovereign funds | 2.5% | 4 | +6.9% |
| Other investment advisers | 0.0% | 4 | -0.3% |
| Other | 0.3% | 2 | +48.2% |
| Diversified | 6.5% | 18 | +15.4% |
| Corporations | 0.0% | 0 | — |
| Unknown | 44.0% | 164 | +2.9% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 15.3% | 34 | +5.3% |
| Private equity funds | 2.8% | 12 | +2.4% |
| Venture capital funds | 0.2% | 2 | 0.0% |
| Real estate funds | 0.0% | 4 | +4813.2% |
| Liquidity funds | 0.0% | 1 | +4.5% |
| Securitized asset funds | 0.8% | 1 | -5.6% |
| Other private funds | 15.1% | 18 | +5.2% |
| Mixed private funds | 0.4% | 2 | -6.9% |
| Private funds, type not stated | 0.0% | 2 | -61.5% |
| No private funds | 21.5% | 90 | +10.3% |
| Unknown | 44.0% | 162 | +2.9% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 90.8% | 270 | +3.8% |
| Outside the US | 9.2% | 58 | +18.3% |
The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Excluded 3 holders with no observed 2026-03-31 13F and 2 holders with no observed 2026-06-30 13F. Compared across CIK changes: 4 filers continue as Evelyn Partners Group Ltd; JANUS HENDERSON GROUP PLC continues as Jupiter Topco LLC.
Conviction and Crowding
328 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).
Estimated Holder Cost Basis
Quarter ended Jun 30, 2026, on that quarter's share basisEstimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.
Estimated cost covers 33.6% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.
Shared Holders
Companies RDNT's active holders also own, quarter ended Jun 30, 2026| # | Company | Shared holders |
|---|---|---|
| 1 | BV BrightView Holdings, Inc. | 5 |
| 2 | MC Moelis & Co | 7 |
| 3 | OLLI Ollie's Bargain Outlet Holdings, Inc. | 7 |
| 4 | FA First Advantage Corp | 4 |
| 5 | HRI Herc Holdings Inc | 6 |
| 6 | TTI Tetra Technologies Inc | 6 |
| 7 | INFU InfuSystem Holdings, Inc | 3 |
| 8 | SXT Sensient Technologies Corp | 7 |
| 9 | FWRG First Watch Restaurant Group, Inc. | 4 |
| 10 | SIBN SI-BONE, Inc. | 4 |
Shareholder Targets
13F filers that own its peers but not RDNT, quarter ended Jun 30, 2026Found through its holder-overlap peers: BV, MC, OLLI, FA, HRI, TTI, INFU, SXT, FWRG, SIBN, CVEO, ARLO, ZWS, EYE, CHEF, RSI, LTH, ARHS, LPTH, NVEC. 936 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | Silver Lake Group, L.L.C. Unknown, Concentrated | $1,616,519,012 1 held | FA |
| 2 | KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC Registered adviser, Diversified active | $878,389,507 3 held | ZWS, MC, OLLI |
| 3 | WASATCH ADVISORS LP Registered adviser, Diversified active | $651,728,058 6 held | OLLI, MC, ARLO |
| 4 | NOMURA ASSET MANAGEMENT INTERNATIONAL INC. Adviser, Diversified active | $508,146,240 8 held | ZWS, HRI, LTH |
| 5 | Leonard Green & Partners, L.P. Registered adviser, Unknown | $450,371,390 1 held | LTH |
| 6 | Driehaus Capital Management LLC Registered adviser, Diversified active | $391,591,024 5 held | RSI, LTH, ZWS |
| 7 | Atairos Group, Inc. Unknown, Concentrated | $358,166,800 1 held | LTH |
| 8 | TPG GP A, LLC Unknown, Concentrated | $322,428,124 1 held | LTH |
| 9 | T. Rowe Price Investment Management, Inc. Adviser, Diversified active | $321,733,066 4 held | LTH, OLLI, ZWS |
| 10 | Kohlberg Kravis Roberts & Co. L.P. Registered adviser, Concentrated | $305,124,352 1 held | BV |
Fund Ownership of RDNT by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 25.57% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 4.39% | 3,454,798 |
| Index ETFs | 21.18% | 16,667,995 |
| Active ETFs | 1.23% | 967,359 |
| Active funds | 19.88% | 15,645,763 |
| Unclassified | 0.84% | 658,943 |
| All registered funds | 47.52% | 37,394,858 |
How fund types are measured
Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mega BlackRock, Inc. Holding company | $675,768,013 | 13.44% | 10,957,808 | Shares | 2026-08-07 | |
| Large RTW INVESTMENTS, LP Registered adviser | $298,911,899 | 5.95% | 4,846,958 | Shares | 2026-08-14 | |
| Mega PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser | $277,588,695 | 5.52% | 4,501,195 | Shares | 2026-08-14 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser | $250,807,634 | 4.99% | 4,066,931 | Shares | 2026-08-13 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC Registered adviser | $196,947,153 | 3.92% | 3,193,565 | Shares | 2026-08-13 | |
| Mid BECK MACK & OLIVER LLC Registered adviser | $195,098,718 | 3.88% | 3,163,592 | Shares | 2026-08-14 | |
| Mega STATE STREET CORP Bank | $175,294,323 | 3.49% | 2,842,457 | Shares | 2026-09-22 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC Registered adviser | $114,614,187 | 2.28% | 1,858,508 | Shares | 2026-08-12 | |
| Mega Invesco Ltd. Adviser | $101,218,475 | 2.01% | 1,641,292 | Shares | 2026-08-14 | |
| Mega AMERICAN CENTURY COMPANIES INC | $99,808,208 | 1.99% | 1,618,424 | Shares | 2026-08-12 | |
| Mega Clearbridge Investments, LLC Registered adviser | $95,382,028 | 1.90% | 1,546,652 | Shares | 2026-08-13 | |
| Mega DIMENSIONAL FUND ADVISORS LP Registered adviser | $91,952,434 | 1.83% | 1,491,040 | Shares | 2026-08-11 | |
| Large Hood River Capital Management LLC Registered adviser | $89,804,162 | 1.79% | 1,456,205 | Shares | 2026-08-14 | |
| Small JB CAPITAL PARTNERS LP | $87,821,841 | 1.75% | 1,424,061 | Shares | 2026-08-11 | |
| Large BAMCO INC /NY/ Registered adviser | $77,765,376 | 1.55% | 1,260,992 | Shares | 2026-08-14 | |
| Mid Van Berkom & Associates Inc. Registered adviser | $73,576,503 | 1.46% | 1,193,068 | Shares | 2026-08-05 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $72,670,200 | 1.45% | 1,178,372 | Shares | 2026-08-14 | |
| Large Alyeska Investment Group, L.P. Registered adviser | $72,260,034 | 1.44% | 1,171,721 | Shares | 2026-08-14 | |
| Large Penserra Capital Management LLC Registered adviser | $70,527,168 | 1.40% | 1,143,622 | Shares | 2026-08-13 | |
| Mid Defiance ETFs, LLC Registered adviser | $70,527,168 | 1.40% | 1,143,622 | Shares | 2026-08-14 | |
| Mega PRINCIPAL FINANCIAL GROUP INC Insurer | $64,898,793 | 1.29% | 1,052,356 | Shares | 2026-08-04 | |
| Large WESTFIELD CAPITAL MANAGEMENT CO LP Registered adviser | $60,161,675 | 1.20% | 975,542 | Shares | 2026-08-12 | |
| Mega MORGAN STANLEY Holding company | $57,421,797 | 1.14% | 931,114 | Shares | 2026-08-13 | |
| Mega NORTHERN TRUST CORP Bank | $50,141,159 | 1.00% | 813,056 | Shares | 2026-08-13 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser | $48,860,030 | 0.97% | 792,282 | Shares | 2026-08-14 | |
| Large Rockefeller Capital Management L.P. Registered adviser | $46,745,242 | 0.93% | 757,990 | Shares | 2026-08-13 | |
| Mega AMERIPRISE FINANCIAL INC Adviser | $45,981,336 | 0.91% | 745,603 | Shares | 2026-08-14 | |
| Mid Global Alpha Capital Management Ltd. Adviser | $45,319,741 | 0.90% | 734,875 | Shares | 2026-08-13 | |
| Large LOOMIS SAYLES & CO L P Registered adviser | $41,995,974 | 0.84% | 680,979 | Shares | 2026-08-14 | |
| Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC Registered adviser | $39,210,582 | 0.78% | 635,813 | Shares | 2026-08-13 | |
| Mid PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC. Registered adviser | $39,053,884 | 0.78% | 633,272 | Shares | 2026-08-14 | |
| Mega Nuveen, LLC | $38,962,919 | 0.77% | 631,797 | Shares | 2026-08-11 | |
| Large Polar Capital Holdings Plc Registered adviser | $38,422,198 | 0.76% | 623,029 | Shares | 2026-08-14 | |
| Mega UBS Group AG Bank | $38,212,888 | 0.76% | 619,635 | Shares | 2026-08-13 | |
| Large Allspring Global Investments Holdings, LLC Holding company | $37,504,239 | 0.75% | 608,144 | Shares | 2026-08-13 | |
| Mega VOYA INVESTMENT MANAGEMENT LLC Registered adviser | $37,304,613 | 0.74% | 604,907 | Shares | 2026-08-12 | |
| Mega VANGUARD FIDUCIARY TRUST CO | $31,295,798 | 0.62% | 507,472 | Shares | 2026-08-13 | |
| Mega ROYAL BANK OF CANADA Bank | $30,921,644 | 0.62% | 501,405 | Shares | 2026-08-14 | |
| Mega DEUTSCHE BANK AG\ Non-US | $30,585,975 | 0.61% | 495,962 | Shares | 2026-08-07 | |
| Large Point72 Asset Management, L.P. Registered adviser | $30,368,589 | 0.60% | 492,437 | Shares | 2026-08-14 | |
| Mid Alpha Wave Global, LP Registered adviser | $29,147,893 | 0.58% | 472,643 | Shares | 2026-08-13 | |
| Mega NORGES BANK Non-US | $28,973,799 | 0.58% | 469,820 | Shares | 2026-08-12 | |
| Mega MILLENNIUM MANAGEMENT LLC Registered adviser | $28,714,908 | 0.57% | 465,622 | Shares | 2026-08-14 | |
| Mega NEUBERGER BERMAN GROUP LLC Holding company | $28,106,904 | 0.56% | 455,763 | Shares | 2026-08-13 | |
| Mid E. Ohman J:or Asset Management AB | $27,428,192 | 0.55% | 397,856 | Shares | 2026-10-22 | |
| Large Tidal Investments LLC Registered adviser | $27,107,665 | 0.54% | 439,560 | Shares | 2026-08-13 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $25,942,160 | 0.52% | 420,661 | Shares | 2026-08-14 | |
| Mega Bank of New York Mellon Corp Bank | $25,936,857 | 0.52% | 420,575 | Shares | 2026-08-06 | |
| Mega RAYMOND JAMES FINANCIAL INC | $25,831,956 | 0.51% | 418,874 | Shares | 2026-08-14 | |
| Large BESSEMER GROUP INC | $24,504,324 | 0.49% | 397,383 | Shares | 2026-08-12 | |
| Mid EMERALD ADVISERS, LLC Registered adviser | $22,848,056 | 0.45% | 370,489 | Shares | 2026-08-05 | |
| Large BNP PARIBAS ASSET MANAGEMENT Holding S.A. Non-US | $22,696,039 | 0.45% | 368,024 | Shares | 2026-08-13 | |
| Large SILVERCREST ASSET MANAGEMENT GROUP LLC Registered adviser | $21,692,792 | 0.43% | 351,756 | Shares | 2026-08-14 | |
| Mega JENNISON ASSOCIATES LLC Registered adviser | $21,045,565 | 0.42% | 341,261 | Shares | 2026-08-03 | |
| Large NEW YORK STATE COMMON RETIREMENT FUND | $20,280,426 | 0.40% | 328,854 | Shares | 2026-07-29 | |
| Mid SEGALL BRYANT & HAMILL, LLC Registered adviser | $18,938,857 | 0.38% | 307,100 | Shares | 2026-08-12 | |
| Mega WELLINGTON MANAGEMENT GROUP LLP Holding company | $17,268,771 | 0.34% | 280,019 | Shares | 2026-08-14 | |
| Mid Penn Capital Management Company, LLC Registered adviser | $16,734,277 | 0.33% | 271,352 | Shares | 2026-07-30 | |
| Large WCM INVESTMENT MANAGEMENT, LLC Registered adviser | $15,630,138 | 0.31% | 253,448 | Shares | 2026-08-13 | |
| Mid EMERALD MUTUAL FUND ADVISERS TRUST Registered adviser | $15,464,615 | 0.31% | 250,764 | Shares | 2026-08-05 | |
| Large Public Sector Pension Investment Board Non-US | $14,992,655 | 0.30% | 243,111 | Shares | 2026-08-13 | |
| Large WHITTIER TRUST CO | $14,737,587 | 0.29% | 238,975 | Shares | 2026-07-28 | |
| Large FRED ALGER MANAGEMENT, LLC Registered adviser | $13,406,687 | 0.27% | 217,394 | Shares | 2026-08-14 | |
| Large ROYCE & ASSOCIATES LP Registered adviser | $13,028,959 | 0.26% | 211,269 | Shares | 2026-08-14 | |
| Mega SEI INVESTMENTS CO Holding company | $12,834,081 | 0.26% | 208,109 | Shares | 2026-08-14 | |
| Large PICTON MAHONEY ASSET MANAGEMENT Non-US | $12,457,648 | 0.25% | 202,005 | Shares | 2026-08-13 | |
| Mid PALISADE CAPITAL MANAGEMENT, LP Registered adviser | $12,298,909 | 0.24% | 199,431 | Shares | 2026-08-14 | |
| Large First Eagle Investment Management, LLC Registered adviser | $12,027,870 | 0.24% | 195,036 | Shares | 2026-08-24 | |
| Large AGF MANAGEMENT LTD | $11,628,803 | 0.23% | 188,565 | Shares | 2026-08-10 | |
| Large SEB Asset Management AB | $11,118,977 | 0.22% | 180,298 | Shares | 2026-08-04 | |
| Large Thrivent Financial for Lutherans Registered adviser | $10,708,933 | 0.21% | 173,649 | Shares | 2026-08-14 | |
| Mid Granahan Investment Management, LLC Registered adviser | $10,584,853 | 0.21% | 171,637 | Shares | 2026-08-14 | |
| Mega RHUMBLINE ADVISERS Registered adviser | $10,372,832 | 0.21% | 168,199 | Shares | 2026-08-12 | |
| Mega Legal & General Group Plc | $9,786,719 | 0.19% | 158,695 | Shares | 2026-08-14 | |
| Mid PARADIGM CAPITAL MANAGEMENT INC/NY Registered adviser | $9,583,518 | 0.19% | 155,400 | Shares | 2026-08-13 | |
| Mega BNP PARIBAS ARBITRAGE, SA Non-US | $9,224,660 | 0.18% | 149,581 | Shares | 2026-08-13 | |
| Large MAIRS & POWER INC Registered adviser | $8,209,263 | 0.16% | 133,116 | Shares | 2026-08-14 | |
| Mega Swiss National Bank | $8,165,108 | 0.16% | 132,400 | Shares | 2026-08-11 | |
| Mega CITIGROUP INC Bank | $8,096,715 | 0.16% | 131,291 | Shares | 2026-08-03 | |
| Large Cerity Partners LLC Registered adviser | $7,678,099 | 0.15% | 124,503 | Shares | 2026-08-14 | |
| Small Pier Capital, LLC Registered adviser | $7,586,520 | 0.15% | 123,018 | Shares | 2026-08-05 | |
| Mid WHITTIER TRUST CO OF NEVADA INC | $7,498,454 | 0.15% | 121,590 | Shares | 2026-07-28 | |
| Small ROBOTTI ROBERT Holding company | $7,460,343 | 0.15% | 120,972 | Shares | 2026-08-10 | |
| Mid SOROS FUND MANAGEMENT LLC | $7,189,981 | 0.14% | 116,588 | Shares | 2026-08-14 | |
| Large Schonfeld Strategic Advisors LLC Registered adviser | $7,111,044 | 0.14% | 115,308 | Shares | 2026-08-14 | |
| Large Sequoia Financial Advisors, LLC Registered adviser | $7,099,450 | 0.14% | 115,120 | Shares | 2026-07-17 | |
| Mid HARBOR CAPITAL ADVISORS, INC. Registered adviser | $6,952,116 | 0.14% | 100,843 | Shares | 2026-10-22 | |
| Mega JPMORGAN CHASE & CO Bank | $6,246,860 | 0.12% | 101,295 | Shares | 2026-08-12 | |
| Mega ENVESTNET ASSET MANAGEMENT INC Registered adviser | $6,224,661 | 0.12% | 100,935 | Shares | 2026-09-23 | |
| Mega WELLS FARGO & COMPANY/MN Bank | $6,000,735 | 0.12% | 97,304 | Shares | 2026-08-14 | |
| Mega BARCLAYS PLC Bank | $5,927,411 | 0.12% | 96,115 | Shares | 2026-08-14 | |
| Mega ALLIANCEBERNSTEIN L.P. Registered adviser | $5,642,003 | 0.11% | 91,487 | Shares | 2026-08-14 | |
| Large Temasek Holdings (Private) Ltd Holding company | $5,363,686 | 0.11% | 86,974 | Shares | 2026-08-07 | |
| Mega Russell Investments Group, Ltd. | $5,149,257 | 0.10% | 83,497 | Shares | 2026-08-06 | |
| Large Holocene Advisors, LP Registered adviser | $4,960,488 | 0.10% | 80,436 | Shares | 2026-08-14 | |
| Large ADAGE CAPITAL PARTNERS GP, L.L.C. Registered adviser | $4,938,595 | 0.10% | 80,081 | Shares | 2026-08-14 | |
| Mid Hilton Capital Management, LLC Registered adviser | $4,836,593 | 0.10% | 78,427 | Shares | 2026-08-04 | |
| Large Man Group plc | $4,736,687 | 0.09% | 76,807 | Shares | 2026-08-14 | |
| Mega CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Benefit plan | $4,646,464 | 0.09% | 75,344 | Shares | 2026-08-24 | |
| Large PRUDENTIAL FINANCIAL INC Insurer | $4,516,587 | 0.09% | 73,238 | Shares | 2026-08-12 |
Showing the top 100 of 345 holders. Create a free account to see every holder, past quarters, search, filters and CSV export.