RADNET INC RDNT
COM · Common Stock · CUSIP 750491102 · ISIN US7504911022
- SectorHealth care
- IndustryServices-Medical Laboratories
- HeadquartersLos Angeles, CA
- Websiteradnet.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($918.3k this quarter). Holder counts are more reliable. Shares outstanding: 67.8m as of 2023-08-04, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $32.61. Options: 9 managers hold calls ($5.9m notional), 8 hold puts ($6.6m).
Trends to Q2 2023
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 154 |
| Q4 2022 | 146 |
| Q1 2023 | 153 |
| Q2 2023 | 187 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q4 2022 | 67 | 69 |
| Q1 2023 | 67 | 65 |
| Q2 2023 | 112 | 52 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2022 | $2.2m | $2.8m | 1.30 |
| Q4 2022 | $1.9m | $1.7m | 0.89 |
| Q1 2023 | $3.5m | $4.8m | 1.36 |
| Q2 2023 | $5.9m | $6.6m | 1.11 |
Biggest buyers
| Point72 Asset Management, L.P. | Added | +1.5m |
| BlackRock Inc. | Added | +1.2m |
| Invesco Ltd. | Added | +992.7k |
| Hood River Capital Management LLC | New | +973.1k |
| PRINCIPAL FINANCIAL GROUP INC | Added | +694.7k |
| VANGUARD GROUP INC | Added | +554.3k |
| MILLENNIUM MANAGEMENT LLC | Added | +544.8k |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | New | +524.8k |
| Maven Securities LTD | New | +400.7k |
| Penn Capital Management Company, LLC | New | +371.0k |
Biggest sellers
| EDMOND DE ROTHSCHILD HOLDING S.A. | Reduced | -521.5k |
| GOLDMAN SACHS GROUP INC | Reduced | -385.5k |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | Reduced | -156.4k |
| JPMORGAN CHASE & CO | Reduced | -111.1k |
| ROYCE & ASSOCIATES LP | Reduced | -101.3k |
| Voce Capital Management LLC | Reduced | -92.3k |
| Advantage Alpha Capital Partners LP | Reduced | -72.7k |
| Tamarack Advisers, LP | Reduced | -71.5k |
| Assenagon Asset Management S.A. | Reduced | -51.7k |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | -51.5k |
Biggest calls
| Jefferies Financial Group Inc. | New | $2.4m75.0k shares |
| GROUP ONE TRADING LLC | Added | $652.4k20.0k shares |
| PEAK6 Investments LLC | New | $642.6k19.7k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $580.6k17.8k shares |
| SIMPLEX TRADING, LLC | Reduced | $499.0k15.3k shares |
| CITADEL ADVISORS LLC | Reduced | $489.3k15.0k shares |
| JANE STREET GROUP, LLC | Reduced | $450.2k13.8k shares |
| Walleye Trading LLC | New | $140.3k4.3k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| Jefferies Financial Group Inc. | New | $2.4m75.0k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $1.8m54.9k shares |
| CITADEL ADVISORS LLC | Reduced | $1.7m51.6k shares |
| Walleye Trading LLC | New | $430.6k13.2k shares |
| SIMPLEX TRADING, LLC | Reduced | $182.0k5.6k shares |
| Walleye Capital LLC | New | $26.1k800 shares |
| GROUP ONE TRADING LLC | New | $3.3k100 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| BlackRock, Inc. 13G · institution filed 2025-10-17 | 12.0% |
| RTW INVESTMENTS, LP 13G · institution +1.1 pts · filed 2026-08-14 | 6.2% |
| PRICE T ROWE ASSOCIATES INC /MD/ 13G · institution new · filed 2026-05-15 | 5.4% |
| VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 5.1% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-27; now reported by VANGUARD PORTFOLIO MANAGEMENT LLC)
Insider purchases and sales in Q2 2023
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q3 2021 | 0 | — | 0 | — | — |
| Q4 2021 | 0 | — | 1 | $2.1m | — |
| Q1 2022 | 0 | — | 0 | — | — |
| Q2 2022 | 0 | — | 2 | $456.2k | — |
| Q3 2022 | 0 | — | 0 | — | — |
| Q4 2022 | 0 | — | 2 | $156.0k | — |
| Q1 2023 | 0 | — | 2 | $673.5k | — |
| Q2 2023 | 0 | — | 2 | $1.8m | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2023-06-08 | HAMES NORMAN R Pres and COO-West Operations | Sold | $311.2k10.0k shares |
| 2023-06-07 | HAMES NORMAN R Pres and COO-West Operations | Sold | $463.8k15.0k shares |
| 2023-06-06 | HAMES NORMAN R Pres and COO-West Operations | Sold | $622.2k20.0k shares |
| 2023-06-02 | HAMES NORMAN R Pres and COO-West Operations | Sold | $301.3k10.0k shares |
| 2023-05-23 | Gordon Christine Nayoma Director | Sold | $138.4k4.9k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2023
| Manager | Shares | Change |
|---|---|---|
| BlackRock Inc. 0.01% of their portfolio | 8.1m $262.7m | Added +1.2m |
| VANGUARD GROUP INC 0.00% of their portfolio | 4.1m $133.1m | Added +554.3k |
| BECK MACK & OLIVER LLC 2.78% of their portfolio | 3.3m $106.3m | Added +7.2k |
| JB CAPITAL PARTNERS LP 14.95% of their portfolio | 2.1m $69.4m | Unchanged |
| Point72 Asset Management, L.P. 0.23% of their portfolio | 2.1m $67.4m | Added +1.5m |
| EDMOND DE ROTHSCHILD HOLDING S.A. 1.31% of their portfolio | 2.0m $66.6m | Reduced -521.5k |
| STATE STREET CORP 0.00% of their portfolio | 2.0m $65.6m | Added +194.2k |
| DIMENSIONAL FUND ADVISORS LP 0.02% of their portfolio | 1.6m $52.2m | Added +35.9k |
| Global Alpha Capital Management Ltd. 4.68% of their portfolio | 1.5m $50.0m | Reduced -21.1k |
| Invesco Ltd. 0.01% of their portfolio | 1.3m $42.7m | Added +992.7k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 1.1m $34.9m | Added +105.7k |
| PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC. 2.06% of their portfolio | 1.0m $33.8m | Reduced -38.7k |
| PRINCIPAL FINANCIAL GROUP INC 0.02% of their portfolio | 994.0k $32.4m | Added +694.7k |
| Hood River Capital Management LLC 0.94% of their portfolio | 973.1k $31.7m | New |
| AMERICAN CENTURY COMPANIES INC 0.02% of their portfolio | 892.1k $29.1m | Added +21.5k |
| Woodline Partners LP 0.34% of their portfolio | 871.1k $28.4m | Added +370.3k |
| MILLENNIUM MANAGEMENT LLC 0.03% of their portfolio | 819.8k $26.7m | Added +544.8k |
| SILVERCREST ASSET MANAGEMENT GROUP LLC 0.13% of their portfolio | 568.0k $18.5m | Reduced -156.4k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 565.8k $18.5m | Added +28.6k |
| DEUTSCHE BANK AG\ 0.01% of their portfolio | 562.2k $18.3m | Reduced -196 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio | 547.1k $17.8m | Added +39.6k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 524.9k $17.1m | Reduced -385.5k |
| ADAGE CAPITAL PARTNERS GP, L.L.C. 0.04% of their portfolio | 524.8k $17.1m | New |
| Rubric Capital Management LP 0.72% of their portfolio | 516.1k $16.8m | Added +110.7k |
| RENAISSANCE TECHNOLOGIES LLC 0.02% of their portfolio | 437.3k $14.3m | Reduced -51.5k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 436.0k $14.2m | Added +41.4k |
| MORGAN STANLEY 0.00% of their portfolio | 403.9k $13.2m | Added +120.2k |
| Maven Securities LTD 1.87% of their portfolio | 400.7k $13.1m | New |
| SECTORAL ASSET MANAGEMENT INC 2.17% of their portfolio | 398.6k $13.0m | Added +85.7k |
| Pier Capital, LLC 1.79% of their portfolio | 382.2k $12.5m | Added +59.0k |
| Penn Capital Management Company, LLC 1.18% of their portfolio | 371.0k $12.1m | New |
| Allspring Global Investments Holdings, LLC 0.02% of their portfolio | 361.3k $11.8m | Added +360.9k |
| ROYCE & ASSOCIATES LP 0.11% of their portfolio | 352.9k $11.5m | Reduced -101.3k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 330.0k $10.8m | Added +89.2k |
| Portolan Capital Management, LLC 0.88% of their portfolio | 303.5k $9.9m | New |
| INTRINSIC EDGE CAPITAL MANAGEMENT LLC 0.77% of their portfolio | 303.1k $9.9m | New |
| Monashee Investment Management LLC 2.34% of their portfolio | 300.0k $9.8m | New |
| ROBOTTI ROBERT 1.56% of their portfolio | 296.8k $9.7m | Reduced -3.3k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.01% of their portfolio | 279.5k $9.1m | Added +253.6k |
| Voce Capital Management LLC 15.30% of their portfolio | 271.0k $8.8m | Reduced -92.3k |
| Alyeska Investment Group, L.P. 0.06% of their portfolio | 250.0k $8.2m | New |
| Advantage Alpha Capital Partners LP 1.47% of their portfolio | 225.6k $7.4m | Reduced -72.7k |
| CITADEL ADVISORS LLC 0.01% of their portfolio | 222.6k $7.3m | Added +71.3k |
| Skandinaviska Enskilda Banken AB (publ) 0.04% of their portfolio | 208.2k $6.8m | New |
| TWO SIGMA ADVISERS, LP 0.02% of their portfolio | 205.7k $6.7m | Added +88.5k |
| PUTNAM INVESTMENTS LLC 0.01% of their portfolio | 174.7k $5.7m | Reduced -25.4k |
| Cerity Partners LLC 0.02% of their portfolio | 172.0k $5.6m | Reduced -2.1k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 168.3k $5.5m | Added +8.6k |
| Legal & General Group Plc 0.00% of their portfolio | 165.3k $5.4m | Added +42.9k |
| UBS Group AG 0.00% of their portfolio | 152.4k $5.0m | Added +134.0k |
| RHUMBLINE ADVISERS 0.01% of their portfolio | 151.9k $5.0m | Added +1.4k |
| SG Capital Management LLC 2.01% of their portfolio | 150.2k $4.9m | New |
| Tamarack Advisers, LP 3.47% of their portfolio | 140.0k $4.6m | Reduced -71.5k |
| HSBC HOLDINGS PLC 0.00% of their portfolio | 139.7k $4.6m | New |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 134.3k $4.4m | Reduced -111.1k |
| Russell Investments Group, Ltd. 0.01% of their portfolio | 128.8k $4.2m | Added +108.4k |
| Nuveen Asset Management, LLC 0.00% of their portfolio | 128.2k $4.2m | Reduced -955 |
| Swiss National Bank 0.00% of their portfolio | 128.1k $4.2m | Added +16.7k |
| SEI INVESTMENTS CO 0.01% of their portfolio | 127.4k $4.2m | New |
| FIRST TRUST ADVISORS LP 0.00% of their portfolio | 126.9k $4.1m | New |
| CITIGROUP INC 0.01% of their portfolio | 123.0k $4.0m | Added +19.4k |
| Alberta Investment Management Corp 0.04% of their portfolio | 113.3k $3.7m | Unchanged |
| Public Sector Pension Investment Board 0.02% of their portfolio | 101.8k $3.3m | Added +16.1k |
| Informed Momentum Co LLC 0.59% of their portfolio | 97.6k $3.2m | Added +16.1k |
| Walleye Capital LLC 0.06% of their portfolio | 96.4k $3.1m | New |
| KEYBANK NATIONAL ASSOCIATION/OH 0.01% of their portfolio | 88.6k $2.9m | Unchanged |
| TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio | 80.5k $2.6m | Added +50.1k |
| WHITE PINE CAPITAL LLC 0.96% of their portfolio | 78.6k $2.6m | Reduced -400 |
| Brookfield Corp /ON/ 0.01% of their portfolio | 77.0k $2.5m | New |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 74.7k $2.4m | Added +43.1k |
| CREDIT SUISSE AG/ 0.00% of their portfolio | 74.5k $2.4m | Added +12.4k |
| RAYMOND JAMES TRUST N.A. 0.07% of their portfolio | 71.3k $2.3m | Reduced -20.0k |
| PRUDENTIAL FINANCIAL INC 0.00% of their portfolio | 70.0k $2.3m | Added +22.6k |
| Calamos Advisors LLC 0.01% of their portfolio | 69.9k $2.3m | New |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 68.2k $2.2m | Added +4.3k |
| VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio | 67.2k $2.2m | Reduced -23.7k |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS 0.02% of their portfolio | 64.8k $2.1m | Added +13.2k |
| Federation des caisses Desjardins du Quebec 0.02% of their portfolio | 63.5k $2.1m | Unchanged |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 61.2k $2.0m | Added +2.9k |
| Rockefeller Capital Management L.P. 0.01% of their portfolio | 60.5k $2.0m | First filing |
| PARADIGM CAPITAL MANAGEMENT INC/NY 0.10% of their portfolio | 55.2k $1.8m | Unchanged |
| Thrivent Financial for Lutherans 0.00% of their portfolio | 54.9k $1.8m | Added +6.6k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 52.6k $1.7m | Added +12.5k |
| NATIONAL BANK OF CANADA /FI/ 0.00% of their portfolio | 52.0k $1.6m | Unchanged |
| CANADA LIFE ASSURANCE Co 0.00% of their portfolio | 50.8k $1.7m | Added +3.5k |
| TEXAS PERMANENT SCHOOL FUND CORP 0.02% of their portfolio | 50.3k $1.6m | Added +6.8k |
| Squarepoint Ops LLC 0.01% of their portfolio | 44.8k $1.5m | New |
| First Eagle Investment Management, LLC 0.00% of their portfolio | 42.6k $1.4m | Reduced -24.5k |
| CHARTWELL INVESTMENT PARTNERS, LLC 0.05% of their portfolio | 42.1k $1.4m | New |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.01% of their portfolio | 40.0k $1.3m | New |
| SEVEN GRAND MANAGERS, LLC 2.42% of their portfolio | 38.2k $1.2m | New |
| Lido Advisors, LLC 0.01% of their portfolio | 37.1k $1.2m | Unchanged |
| State of Alaska, Department of Revenue 0.01% of their portfolio | 34.4k $1.1m | Added +922 |
| Trexquant Investment LP 0.03% of their portfolio | 32.9k $1.1m | Added +17.1k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 32.5k $813.6k | Unchanged |
| Ensign Peak Advisors, Inc 0.00% of their portfolio | 32.2k $1.0m | Unchanged |
| Assenagon Asset Management S.A. 0.00% of their portfolio | 31.8k $1.0m | Reduced -51.7k |
| NORGES BANK 0.00% of their portfolio | 31.0k $1.0m | Not comparable |
| Composition Wealth, LLC 0.03% of their portfolio | 30.3k $987.4k | Reduced -1.3k |
| State of Tennessee, Department of Treasury 0.00% of their portfolio | 30.1k $980.8k | Unchanged |