Latest Period
Q1 2026
Security Snapshot
RadNet, Inc. - COMMON STOCK (RDNT) Institutional Ownership
CUSIP: 750491102
13F Institutional Holders and Ownership History from Q1 2014 to Q1 2026
Institutions Reporting
338
Shares (Excl. Options)
77,070,708
Price
$55.89
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- Security type / class
- Equity / COMMON STOCK
- Symbol
- RDNT on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 77,070,708
- Total 13F value
- $4,308,359,009
- Portfolio coverage rank
- 0%
- Share change
- +683,335
- Value change
- -$3,958,421
- Number of holders
- 338
- Shares outstanding
- 76,941,426
- SEC-reported price per share
- $59.02
- Insider filing price
- $59.02
Latest holder snapshot
5 signals
Issuer context
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- RDNT - RadNet, Inc. - COMMON STOCK is tracked under CUSIP 750491102.
- 338 institutions reported positions in Q1 2026.
- 4 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 340 to 338 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $5,440,637,967 to $4,308,359,009.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC Evidence
Latest holder context comes from 338 institutions filings for Q1 2026.
Security key
750491102
Latest holder period
Q1 2026
13F holders
338
13D/G owners
4
CIK / CUSIP context first
Open Q1 2026 holders
RDNT full holder history
RadNet, Inc. SEC filings
RadNet, Inc. company facts
RadNet, Inc. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 750491102:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
4
Security
RDNT
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 12% | $704,993,027 | 9,250,663 | BlackRock, Inc. | 30 Sep 2025 | |||
| PRICE T ROWE ASSOCIATES INC /MD/ | 5.4% | $232,296,937 | 4,154,837 | T. Rowe Price Associates, Inc. | 31 Mar 2026 | |||
| VANGUARD PORTFOLIO MANAGEMENT LLC | 5.1% | $220,886,222 | 3,952,160 | Vanguard Portfolio Management | 31 Mar 2026 | |||
| RTW INVESTMENTS, LP | 5.1% | $300,704,475 | 3,938,500 | RTW Investments, LP | 31 Dec 2025 |
As of 31 Mar 2026, 338 institutional investors reported holding 77,070,708 shares of RadNet, Inc. - COMMON STOCK (RDNT). This represents 100% of the company’s total 76,941,426 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
67%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 13% | 10,035,734 | +0.15% | 0.01% | $560,897,199 |
| RTW INVESTMENTS, LP | 5.6% | 4,285,000 | +8.8% | 2.4% | $239,488,650 |
| PRICE T ROWE ASSOCIATES INC /MD/ | 5.4% | 4,154,863 | +54% | 0.03% | $232,216,000 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 5.1% | 3,899,127 | 0% | 0.01% | $217,922,208 |
| BECK MACK & OLIVER LLC | 4.1% | 3,166,192 | -2% | 3.6% | $176,958,471 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4% | 3,111,012 | 0% | 0% | $173,874,461 |
| STATE STREET CORP | 3.4% | 2,651,598 | +2.8% | 0.01% | $148,197,812 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.2% | 1,723,607 | +3.1% | 0.01% | $96,350,207 |
| Invesco Ltd. | 2.1% | 1,633,495 | +2.3% | 0.01% | $91,296,035 |
| JB CAPITAL PARTNERS LP | 1.9% | 1,424,061 | 0% | 14% | $79,590,769 |
| Hood River Capital Management LLC | 1.8% | 1,411,497 | +1.1% | 0.79% | $78,888,567 |
| DIMENSIONAL FUND ADVISORS LP | 1.8% | 1,379,003 | +1.4% | 0.02% | $77,074,152 |
| Alyeska Investment Group, L.P. | 1.7% | 1,309,308 | +14% | 0.21% | $73,177,224 |
| Clearbridge Investments, LLC | 1.7% | 1,278,540 | +15% | 0.06% | $71,457,603 |
| GOLDMAN SACHS GROUP INC | 1.5% | 1,190,275 | +6.3% | 0.01% | $66,524,456 |
| PRINCIPAL FINANCIAL GROUP INC | 1.4% | 1,111,277 | -1.9% | 0.03% | $62,109,271 |
| Van Berkom & Associates Inc. | 1.3% | 1,028,586 | +25% | 1.9% | $57,488,000 |
| AMERICAN CENTURY COMPANIES INC | 1.2% | 902,192 | -0.64% | 0.03% | $50,423,623 |
| AMERIPRISE FINANCIAL INC | 1.2% | 899,126 | -20% | 0.01% | $50,239,865 |
| Allspring Global Investments Holdings, LLC | 1.1% | 865,404 | -17% | 0.08% | $47,865,495 |
| Point72 Asset Management, L.P. | 1.1% | 855,372 | +232% | 0.08% | $47,806,741 |
| MORGAN STANLEY | 1.1% | 850,471 | -10% | 0% | $47,532,879 |
| BAMCO INC /NY/ | 1.1% | 810,066 | 0% | 0.14% | $45,274,589 |
| FULLER & THALER ASSET MANAGEMENT, INC. | 1% | 806,296 | +4.9% | 0.15% | $45,063,901 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1% | 767,471 | +1.2% | 0.01% | $42,893,954 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
49
Latest
Q1 2026
Rows shown
1-25 of 49
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 77,070,708 | $4,308,359,009 | -$3,958,421 | $55.89 | 338 |
| 2025 Q4 | 76,223,567 | $5,440,637,967 | +$107,811,891 | $71.35 | 340 |
| 2025 Q3 | 74,117,096 | $5,650,834,032 | +$284,022,490 | $76.21 | 326 |
| 2025 Q2 | 70,905,299 | $4,034,464,486 | +$150,437,609 | $56.91 | 326 |
| 2025 Q1 | 68,288,373 | $3,396,956,782 | +$155,222,910 | $49.72 | 302 |
| 2024 Q4 | 64,315,643 | $4,493,318,936 | +$39,253,825 | $69.84 | 327 |
| 2024 Q3 | 63,697,057 | $4,421,272,087 | +$181,481,630 | $69.39 | 300 |
| 2024 Q2 | 61,184,391 | $3,605,178,244 | +$100,119,449 | $58.92 | 275 |
| 2024 Q1 | 59,654,001 | $2,902,884,328 | +$331,719,856 | $48.66 | 271 |
| 2023 Q4 | 53,353,765 | $1,855,208,524 | +$26,147,865 | $34.77 | 213 |
| 2023 Q3 | 52,816,705 | $1,489,029,059 | +$33,857,606 | $28.19 | 189 |
| 2023 Q2 | 50,826,091 | $1,657,822,513 | +$357,165,910 | $32.62 | 182 |
| 2023 Q1 | 39,962,793 | $1,000,578,016 | +$12,281,386 | $25.03 | 148 |
| 2022 Q4 | 39,552,373 | $744,807,701 | +$4,406,427 | $18.83 | 145 |
| 2022 Q3 | 39,268,471 | $799,025,645 | +$7,472,877 | $20.35 | 145 |
| 2022 Q2 | 38,907,018 | $672,576,366 | +$19,280,324 | $17.28 | 140 |
| 2022 Q1 | 37,898,816 | $847,483,854 | +$34,952,087 | $22.37 | 157 |
| 2021 Q4 | 36,078,664 | $1,084,746,085 | +$22,839,023 | $30.11 | 164 |
| 2021 Q3 | 35,331,527 | $1,035,436,669 | -$13,789,344 | $29.31 | 173 |
| 2021 Q2 | 35,697,383 | $1,202,738,527 | +$23,733,089 | $33.69 | 165 |
| 2021 Q1 | 35,146,548 | $764,511,328 | +$11,561,688 | $21.75 | 140 |
| 2020 Q4 | 34,676,721 | $678,040,983 | -$865,977 | $19.57 | 136 |
| 2020 Q3 | 34,869,831 | $535,065,200 | +$574,603 | $15.35 | 131 |
| 2020 Q2 | 34,757,896 | $551,484,203 | -$6,575,937 | $15.87 | 130 |
| 2020 Q1 | 35,519,717 | $369,099,195 | -$11,528,810 | $10.51 | 147 |