FONAR Corporation
FONAR Corporation (FONR) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · FONR · as of Sep 30, 2025
Ownership Breakdown
41
Institutional Holders
▼ 6 vs Q2
$43.81M
Total Inst. Value
▲ $79,398 vs Q2
6.17M
Shares Outstanding
freeFloat 88.83%
2.91M
13F Shares Held
▼ 14,551 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
FONR largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC electromedical & electrotherapeutic apparatus | 537.0K | 7.79% | 7.79% | $8.09B | Nov 13, 2025 | ▼ 7.0K |
MONEY CONCEPTS CAPITAL CORP electromedical & electrotherapeutic apparatus | 483.5K | 7.01% | 7.01% | $7.28B | Nov 4, 2025 | ▲ 20.8K |
VANGUARD GROUP INC electromedical & electrotherapeutic apparatus | 388.4K | 5.63% | 5.63% | $5.85B | Nov 7, 2025 | ▼ 1.9K |
DIMENSIONAL FUND ADVISORS LP electromedical & electrotherapeutic apparatus | 377.0K | 5.47% | 5.47% | $5.68B | Nov 12, 2025 | ▲ 4.4K |
RENAISSANCE TECHNOLOGIES LLC electromedical & electrotherapeutic apparatus | 308.6K | 4.48% | 4.48% | $4.65B | Nov 13, 2025 | ▼ 6.9K |
PEAPOD LANE CAPITAL LLC electromedical & electrotherapeutic apparatus | 113.3K | 1.64% | 1.64% | $1.71B | Nov 10, 2025 | ▼ 29.9K |
BLACKROCK, INC. electromedical & electrotherapeutic apparatus | 92.0K | 1.33% | 1.33% | $1.39B | Nov 12, 2025 | ▲ 746 |
TRUFFLE HOUND CAPITAL, LLC electromedical & electrotherapeutic apparatus | 90.0K | 1.31% | 1.31% | $1.36B | Nov 6, 2025 | — held |
BRIDGEWAY CAPITAL MANAGEMENT, LLC electromedical & electrotherapeutic apparatus | 81.2K | 1.18% | 1.18% | $1.22B | Nov 14, 2025 | ▼ 2.2K |
RBF CAPITAL, LLC electromedical & electrotherapeutic apparatus | 73.1K | 1.06% | 1.06% | $1.10B | Nov 14, 2025 | — held |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
10
Increased
+62.8K shares3
New Positions
first time holders11
Decreased
−60.5K shares9
Sold Out
fully exitedNet shares change (top 50)
+2.3K
+62.8K / −60.5K
Net new holders
-7
3 new / 9 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
FONR insider trading · insider activity
Source: SEC Form 4
Insiders have been net buyers of shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
6
Buy transactions
0
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Bonanni Luciano B EVP/COO | Dec 1, 2020 | Award | 8,066 | — | — | 49.6K | Form 4 ↗ |
Bonanni Luciano B EVP/COO | Jul 10, 2019 | Award | 7,455 | — | — | 41.5K | Form 4 ↗ |
Bonanni Luciano B EVP/COO | Jul 11, 2018 | Award | 5,705 | — | — | 34.0K | Form 4 ↗ |
Bonanni Luciano B EVP/COO | Jun 21, 2017 | Award | 11,000 | — | — | 28.3K | Form 4 ↗ |
Bonanni Luciano B EVP/COO | Aug 23, 2016 | Award | 15,000 | — | — | 17.3K | Form 4 ↗ |
Damadian Timothy Raymond President/CEO/Treasurer | Nov 8, 2022 | W-Will | 36,359 | — | — | 79.1K | Form 4 ↗ |
Damadian Timothy Raymond President/CEO/Treasurer | Jun 21, 2017 | Award | 11,000 | — | — | 38.0K | Form 4 ↗ |
Damadian Timothy Raymond President/CEO/Treasurer | Aug 23, 2016 | Award | 15,000 | — | — | 27.0K | Form 4 ↗ |
shane hilary 10 percent owner | Jun 2, 2026 | Purchase | 196,336 | $19.10 | $3.75M | 520.6K | Form 4 ↗ |
shane hilary 10 percent owner | Jun 2, 2026 | Purchase | 19,000 | $19.12 | $363.3K | 255.3K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
FONAR Corporation (FONR) is primarily owned by institutional investors, who hold approximately 47.1% of total shares outstanding. Company insiders own approximately 11.17%, while retail and public investors account for the remaining 41.68%.
The largest institutional shareholder of FONAR Corporation is KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC, holding approximately 536,987 shares — equal to 7.79% of outstanding shares — as of September 30, 2025.
A total of 41 institutional investors currently hold FONR stock, with a combined institutional value of approximately $43,807,255 as of the most recent 13F filing period.
Frequently asked questions
FONR ownershipFONAR Corporation (FONR) is primarily owned by institutional investors, who hold approximately 47.1% of shares. The largest shareholder is KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC with a 7.79% stake. Company insiders hold 11.17%. Data sourced from SEC Form 13F as of September 30, 2025.