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 ($5.6k this quarter). Holder counts are more reliable. Shares outstanding: 57.4m as of 2022-11-04, 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 ≈ $18.83. Options: 4 managers hold calls ($1.9m notional), 5 hold puts ($1.7m).
Trends to Q4 2022
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 154 |
| Q4 2022 | 146 |
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 |
Biggest buyers
| EDMOND DE ROTHSCHILD HOLDING S.A. | Added | +391.1k |
| BlackRock Inc. | Added | +343.9k |
| SECTORAL ASSET MANAGEMENT INC | New | +296.9k |
| Woodline Partners LP | Added | +266.8k |
| STATE STREET CORP | Added | +251.1k |
| PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC. | Added | +204.5k |
| BECK MACK & OLIVER LLC | Added | +191.1k |
| VANGUARD GROUP INC | Added | +160.8k |
| DEUTSCHE BANK AG\ | Added | +141.4k |
| GOLDMAN SACHS GROUP INC | Added | +127.8k |
Biggest sellers
| Point72 Asset Management, L.P. | Reduced | -1.2m |
| Assenagon Asset Management S.A. | Reduced | -302.4k |
| Global Alpha Capital Management Ltd. | Reduced | -174.9k |
| Advantage Alpha Capital Partners LP | Reduced | -116.3k |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | -110.1k |
| MILLENNIUM MANAGEMENT LLC | Reduced | -84.2k |
| FIRST TRUST ADVISORS LP | Sold out | -61.0k |
| CITADEL ADVISORS LLC | Reduced | -59.9k |
| OBERWEIS ASSET MANAGEMENT INC/ | Sold out | -51.9k |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | Reduced | -50.4k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $930.2k49.4k shares |
| CITADEL ADVISORS LLC | Added | $625.2k33.2k shares |
| SIMPLEX TRADING, LLC | Added | $391.0k20.8k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $1.2m62.0k shares |
| SIMPLEX TRADING, LLC | Added | $323.0k17.2k shares |
| CITADEL ADVISORS LLC | Reduced | $244.8k13.0k shares |
| GROUP ONE TRADING LLC | New | $3.8k200 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 Q4 2022
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 |
|---|---|---|---|---|---|
| Q1 2021 | 0 | — | 0 | — | — |
| Q2 2021 | 0 | — | 0 | — | — |
| 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 | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2022-12-19 | HAMES NORMAN R Pres and COO-West Operations | Sold | $97.2k5.0k shares |
| 2022-12-19 | Gordon Christine Nayoma Director | Sold | $58.7k3.0k 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, Q4 2022
| Manager | Shares | Change |
|---|---|---|
| BlackRock Inc. 0.00% of their portfolio | 7.0m $131.4m | Added +343.9k |
| VANGUARD GROUP INC 0.00% of their portfolio | 3.5m $65.3m | Added +160.8k |
| BECK MACK & OLIVER LLC 1.78% of their portfolio | 3.2m $60.5m | Added +191.1k |
| EDMOND DE ROTHSCHILD HOLDING S.A. 1.12% of their portfolio | 2.6m $48.2m | Added +391.1k |
| JB CAPITAL PARTNERS LP 10.35% of their portfolio | 2.1m $39.4m | Unchanged |
| STATE STREET CORP 0.00% of their portfolio | 1.8m $34.6m | Added +251.1k |
| DIMENSIONAL FUND ADVISORS LP 0.01% of their portfolio | 1.5m $29.0m | Added +38.1k |
| Global Alpha Capital Management Ltd. 2.80% of their portfolio | 1.5m $28.6m | Reduced -174.9k |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 1.1m $20.8m | Added +127.8k |
| PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC. 1.33% of their portfolio | 1.1m $20.5m | Added +204.5k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 932.3k $17.6m | Added +33.8k |
| SILVERCREST ASSET MANAGEMENT GROUP LLC 0.10% of their portfolio | 684.8k $12.9m | Reduced -50.4k |
| AMERICAN CENTURY COMPANIES INC 0.01% of their portfolio | 679.2k $12.8m | Added +13.5k |
| DEUTSCHE BANK AG\ 0.01% of their portfolio | 613.1k $11.5m | Added +141.4k |
| Point72 Asset Management, L.P. 0.04% of their portfolio | 565.9k $10.7m | Reduced -1.2m |
| RENAISSANCE TECHNOLOGIES LLC 0.01% of their portfolio | 543.0k $10.2m | Reduced -110.1k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 526.4k $9.9m | Added +12.1k |
| Assenagon Asset Management S.A. 0.04% of their portfolio | 525.4k $9.9m | Reduced -302.4k |
| Woodline Partners LP 0.13% of their portfolio | 498.9k $9.4m | Added +266.8k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 492.6k $9.3m | Added +46.8k |
| ROYCE & ASSOCIATES LP 0.09% of their portfolio | 466.9k $8.8m | Added +8.0k |
| Pier Capital, LLC 1.36% of their portfolio | 442.2k $8.3m | Reduced -4.7k |
| Advantage Alpha Capital Partners LP 1.63% of their portfolio | 408.4k $7.7m | Reduced -116.3k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 406.1k $7.6m | Reduced -13.0k |
| Voce Capital Management LLC 3.93% of their portfolio | 363.3k $6.8m | Unchanged |
| Invesco Ltd. 0.00% of their portfolio | 347.8k $6.5m | Added +19.8k |
| ROBOTTI ROBERT 1.17% of their portfolio | 310.4k $5.8m | Reduced -1.9k |
| PRINCIPAL FINANCIAL GROUP INC 0.00% of their portfolio | 306.5k $5.8m | Reduced -9.2k |
| SECTORAL ASSET MANAGEMENT INC 1.08% of their portfolio | 296.9k $5.6m | New |
| MORGAN STANLEY 0.00% of their portfolio | 278.8k $5.2m | Reduced -14.1k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 247.2k $4.7m | Reduced -7.1k |
| Nuveen Asset Management, LLC 0.00% of their portfolio | 241.8k $4.6m | Reduced -10.4k |
| PUTNAM INVESTMENTS LLC 0.01% of their portfolio | 201.2k $3.8m | Added +19.7k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 146.8k $2.8m | Added +15.8k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 142.4k $2.7m | Added +10.3k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 126.4k $2.4m | Reduced -44.9k |
| Swiss National Bank 0.00% of their portfolio | 124.6k $2.3m | Added +4.6k |
| Legal & General Group Plc 0.00% of their portfolio | 119.3k $2.2m | Added +3.2k |
| TUDOR INVESTMENT CORP ET AL 0.05% of their portfolio | 115.6k $2.2m | Added +72.8k |
| Cheyne Capital Management (UK) LLP 3.70% of their portfolio | 111.4k $2.1m | Reduced -32.2k |
| CITIGROUP INC 0.00% of their portfolio | 110.4k $2.1m | Added +8.1k |
| TWO SIGMA ADVISERS, LP 0.01% of their portfolio | 108.9k $2.1m | Reduced -1.7k |
| Tamarack Advisers, LP 1.36% of their portfolio | 100.0k $1.9m | Added +40.0k |
| VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio | 98.3k $1.9m | Reduced -26.0k |
| RAYMOND JAMES TRUST N.A. 0.06% of their portfolio | 91.9k $1.7m | Reduced -1.7k |
| Public Sector Pension Investment Board 0.01% of their portfolio | 89.3k $1.7m | Unchanged |
| Alberta Investment Management Corp 0.01% of their portfolio | 89.2k $1.7m | Added +16.3k |
| First Eagle Investment Management, LLC 0.00% of their portfolio | 88.6k $1.7m | Reduced -14.5k |
| KEYBANK NATIONAL ASSOCIATION/OH 0.01% of their portfolio | 88.6k $1.7m | Unchanged |
| WHITE PINE CAPITAL LLC 0.57% of their portfolio | 78.0k $1.5m | Added +7.8k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 65.4k $1.2m | Added +50 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 64.8k $1.2m | Added +1.6k |
| Federation des caisses Desjardins du Quebec 0.01% of their portfolio | 63.0k $1.2m | Reduced -8.5k |
| CANADA LIFE ASSURANCE Co 0.00% of their portfolio | 60.3k $1.1m | Added +1.6k |
| CREDIT SUISSE AG/ 0.00% of their portfolio | 58.6k $1.1m | Added +15.2k |
| PARADIGM CAPITAL MANAGEMENT INC/NY 0.07% of their portfolio | 55.2k $1.0m | Unchanged |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS 0.01% of their portfolio | 52.2k $983.0k | Added +7.8k |
| NATIONAL BANK OF CANADA /FI/ 0.00% of their portfolio | 52.0k $979.2k | New |
| Thrivent Financial for Lutherans 0.00% of their portfolio | 50.0k $942.0k | Reduced -344 |
| PRUDENTIAL FINANCIAL INC 0.00% of their portfolio | 49.0k $922.7k | Reduced -335 |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 48.1k $905.6k | Reduced -59.9k |
| Candriam S.C.A. 0.01% of their portfolio | 44.7k $841.5k | Reduced -3.2k |
| Lido Advisors, LLC 0.01% of their portfolio | 37.1k $699.1k | Unchanged |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 37.1k $698.3k | Reduced -154 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 35.7k $671.9k | Reduced -5.5k |
| Westmount Partners, LLC 0.34% of their portfolio | 35.0k $659.0k | First filing |
| State of Alaska, Department of Revenue 0.01% of their portfolio | 34.0k $639.0k | Added +224 |
| State of Tennessee, Department of Treasury 0.00% of their portfolio | 33.4k $629.0k | Unchanged |
| TEXAS PERMANENT SCHOOL FUND CORP 0.01% of their portfolio | 32.8k $617.0k | Reduced -2.1k |
| Squarepoint Ops LLC 0.00% of their portfolio | 32.2k $606.3k | New |
| Composition Wealth, LLC 0.02% of their portfolio | 31.5k $594.0k | Unchanged |
| YOUSIF CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 31.0k $584.2k | Reduced -9.8k |
| COMERICA BANK 0.00% of their portfolio | 28.9k $578.0k | Reduced -8.2k |
| Ensign Peak Advisors, Inc 0.00% of their portfolio | 28.7k $540.6k | Added +8.5k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 28.5k $537.0k | Reduced -707 |
| Belpointe Asset Management LLC 0.03% of their portfolio | 27.3k $513.4k | Unchanged |
| AMERICAN INTERNATIONAL GROUP, INC. 0.00% of their portfolio | 27.0k $509.3k | Reduced -207 |
| MetLife Investment Management, LLC 0.00% of their portfolio | 25.6k $481.2k | Unchanged |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 24.3k $458.4k | Reduced -239 |
| BARCLAYS PLC 0.00% of their portfolio | 23.9k $449.9k | First filing |
| AMALGAMATED BANK 0.00% of their portfolio | 23.8k $448.0k | Unchanged |
| Louisiana State Employees Retirement System 0.01% of their portfolio | 23.2k $437.0k | Reduced -100 |
| Mirae Asset Global Investments Co., Ltd. 0.00% of their portfolio | 22.6k $425.2k | Added +1.7k |
| TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio | 21.4k $402.5k | Reduced -2.5k |
| SteelPeak Wealth, LLC 0.03% of their portfolio | 20.0k $376.6k | Unchanged |
| Maryland State Retirement & Pension System 0.01% of their portfolio | 19.9k $375.1k | New |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 19.6k $369.0k | Added +20 |
| VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 19.2k $362.3k | Unchanged |
| PANAGORA ASSET MANAGEMENT INC 0.00% of their portfolio | 19.2k $360.7k | Reduced -7.9k |
| RAYMOND JAMES & ASSOCIATES 0.00% of their portfolio | 18.9k $356.0k | Added +1.9k |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC 0.01% of their portfolio | 18.7k $352.8k | Reduced -1.9k |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 18.1k $340.0k | Unchanged |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 16.5k $310.0k | Reduced -84.2k |
| OREGON PUBLIC EMPLOYEES RETIREMENT FUND 0.00% of their portfolio | 16.2k $305.5k | Added +55 |
| Alpha Cubed Investments, LLC 0.02% of their portfolio | 15.1k $283.4k | Unchanged |
| TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY 0.00% of their portfolio | 15.0k $283.0k | Added +2.0k |
| ARIZONA STATE RETIREMENT SYSTEM 0.00% of their portfolio | 14.6k $274.1k | Added +804 |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 14.2k $267.3k | Reduced -1.6k |
| UBS Group AG 0.00% of their portfolio | 14.1k $265.9k | Added +11.5k |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.00% of their portfolio | 13.7k $257.4k | Added +230 |