IRadimed Corporation (IRMD) Ownership
IRMD ownership summary
as of October 18, 2026- Institutions
- 62.5% of shares outstanding
- Insiders
- 35.18% of shares outstanding
- Shares outstanding
- 12.8M
- Float
- 8.3M shares available to trade
- Short interest
- 7.93% 657K shares short
- Days to cover
- 4.82 short interest down 6.1% vs prior month
- Institutions 62.50%
- Insiders 35.18%
- Other investors 2.32%
IRMD top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 7.57% | 968K | $85.4M | +38 (+0.0%) | June 30, 2026 |
| 2 | Kayne Anderson Rudnick Investment Management LLC | 3.10% | 397K | $35.0M | +47,666 (+13.6%) | June 30, 2026 |
| 3 | Renaissance Technologies Corp | 3.08% | 394K | $34.8M | −46,300 (−10.5%) | June 30, 2026 |
| 4 | Copeland Capital Management, LLC | 2.99% | 382K | $33.7M | −9,847 (−2.5%) | September 30, 2026 |
| 5 | Vanguard Capital Management, LLC | 2.85% | 365K | $32.2M | +6,317 (+1.8%) | June 30, 2026 |
| 6 | T. Rowe Price Investment Management,Inc. | 2.49% | 319K | $28.1M | +61,983 (+24.1%) | June 30, 2026 |
| 7 | Geode Capital Management, LLC | 2.27% | 290K | $25.6M | +3,546 (+1.2%) | June 30, 2026 |
| 8 | Nine Ten Capital Management LLC | 2.01% | 257K | $22.6M | −77,926 (−23.3%) | June 30, 2026 |
| 9 | Dimensional Fund Advisors, Inc. | 1.79% | 229K | $20.2M | +3,194 (+1.4%) | June 30, 2026 |
| 10 | State Street Corp | 1.73% | 222K | $19.6M | +16,984 (+8.3%) | June 30, 2026 |
| 11 | The Goldman Sachs Group Inc | 1.67% | 214K | $18.9M | +16,206 (+8.2%) | June 30, 2026 |
| 12 | Two Sigma Investments LLC | 1.43% | 183K | $16.1M | +17,225 (+10.4%) | June 30, 2026 |
| 13 | Qube Research & Technologies | 1.23% | 157K | $13.9M | +73,750 (+88.4%) | June 30, 2026 |
| 14 | Royal Bank of Canada | 1.16% | 148K | $13.1M | +118,371 (+397.1%) | June 30, 2026 |
| 15 | Arrowstreet Capital Limited Partnership | 1.13% | 144K | $12.7M | +128,524 (+832.1%) | June 30, 2026 |
| 16 | Northern Trust Corp | 1.05% | 134K | $11.8M | +10,022 (+8.1%) | June 30, 2026 |
| 17 | Acadian Asset Management LLC | 1.01% | 129K | $11.4M | −23,182 (−15.3%) | June 30, 2026 |
| 18 | Morgan Stanley - Brokerage Accounts | 0.99% | 126K | $11.1M | −23,788 (−15.9%) | June 30, 2026 |
| 19 | Vanguard Portfolio Management, LLC | 0.98% | 125K | $11.1M | +2,932 (+2.4%) | June 30, 2026 |
| 20 | Ranger Investment Management LP | 0.77% | 98K | $8.7M | −12,739 (−11.5%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 14 holders added 507K shares and 6 cut 194K.
IRMD top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Vanguard MStar Total Stk Mkt Idx Invest | 2.07% | 264K | $23.3M | — | August 31, 2026 |
| 2 | iShares Russell 2000 ETF | 1.65% | 211K | $18.6M | −2,432 (−1.1%) | September 30, 2026 |
| 3 | Virtus KAR Small-Cap Growth I | 1.07% | 137K | $12.1M | −2,731 (−2.0%) | June 30, 2026 |
| 4 | JNL Multi-Manager Small Cap Growth A | 0.80% | 103K | $9.1M | +6,887 (+7.2%) | June 30, 2026 |
| 5 | Fidelity Small Cap Index | 0.72% | 93K | $8.2M | +800 (+0.9%) | July 31, 2026 |
| 6 | iShares Russell 2000 Growth ETF | 0.63% | 80K | $7.1M | −102 (−0.1%) | September 30, 2026 |
| 7 | T. Rowe Price Small-Cap Stock | 0.56% | 71K | $6.3M | −411 (−0.6%) | September 30, 2026 |
| 8 | Fidelity Advisor Small Cap I | 0.51% | 65K | $5.8M | — | July 31, 2026 |
| 9 | Nuveen Quant Small Cap Equity R6 | 0.48% | 61K | $5.4M | +28,400 (+87.5%) | August 31, 2026 |
| 10 | DFA US Small Cap I | 0.44% | 56K | $5.0M | — | August 31, 2026 |
| 11 | BlackRock Advantage Small Cap Core Instl | 0.43% | 56K | $4.9M | — | August 31, 2026 |
| 12 | T. Rowe Price Small-Cap Value | 0.43% | 55K | $4.9M | −58,200 (−51.3%) | September 30, 2026 |
| 13 | Vanguard Russell 2000 ETF | 0.39% | 49K | $4.4M | +553 (+1.1%) | September 30, 2026 |
| 14 | DFA US Micro Cap I | 0.35% | 44K | $3.9M | — | August 31, 2026 |
| 15 | Schwab US Small-Cap ETF™ | 0.35% | 44K | $3.9M | +27 (+0.1%) | September 30, 2026 |
| 16 | Dimensional US Small Cap ETF | 0.33% | 42K | $3.7M | — | September 30, 2026 |
| 17 | iShares US Medical Devices ETF | 0.32% | 41K | $3.6M | +720 (+1.8%) | September 30, 2026 |
| 18 | BSF Systematic US Eq Abs Ret A2 USD | 0.32% | 41K | $3.6M | +79 (+0.2%) | December 31, 2025 |
| 19 | First Trust Small Cap Gr AlphaDEX® ETF | 0.32% | 40K | $3.6M | +71 (+0.2%) | September 30, 2026 |
| 20 | Fidelity Extended Market Index | 0.31% | 39K | $3.5M | −1,093 (−2.7%) | August 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
IRMD insider transactions
latest 20| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-04-21 | Roger E Susi | Sell | $90.94 | 2,500 | $227,350 |
| 2026-04-20 | Roger E Susi | Sell | $93.36 | 5,000 | $466,800 |
| 2026-04-14 | Roger E Susi | Sell | $93.84 | 2,500 | $234,600 |
| 2026-04-13 | Roger E Susi | Sell | $92.52 | 5,000 | $462,600 |
| 2026-04-07 | Roger E Susi | Sell | $94.84 | 2,500 | $237,100 |
| 2026-04-06 | Roger E Susi | Sell | $96.02 | 5,000 | $480,100 |
| 2026-03-24 | Roger E Susi | Sell | $100.28 | 2,500 | $250,700 |
| 2026-03-23 | Roger E Susi | Sell | $100.38 | 5,000 | $501,900 |
| 2026-03-17 | Roger E Susi | Sell | $102.43 | 2,500 | $256,075 |
| 2026-03-16 | Roger E Susi | Sell | $101.38 | 5,000 | $506,900 |
| 2026-03-10 | Roger E Susi | Sell | $100.11 | 2,500 | $250,275 |
| 2026-03-09 | Roger E Susi | Sell | $100.04 | 5,000 | $500,200 |
| 2026-01-26 | Roger E Susi | Sell | $100.65 | 5,000 | $503,250 |
| 2026-01-20 | Roger E Susi | Sell | $101.84 | 5,000 | $509,200 |
| 2026-01-12 | Roger E Susi | Sell | $97.45 | 5,000 | $487,250 |
| 2025-12-29 | Roger E Susi | Sell | $97.66 | 5,000 | $488,300 |
| 2025-12-22 | Roger E Susi | Sell | $96.73 | 5,000 | $483,650 |
| 2025-12-11 | John Glenn | Sell | $97.29 | 15,000 | $1.5M |
| 2025-12-08 | Roger E Susi | Sell | $95.43 | 5,000 | $477,150 |
| 2025-11-24 | Roger E Susi | Sell | $90.36 | 5,000 | $451,800 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
IRMD shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns IRMD
Institutional investors own 62.5% of IRadimed's shares and insiders 35.18%. The largest holder is BlackRock Inc with 7.57% of the shares (968K), as of June 30, 2026. Among the top 20 institutions, 14 added shares and 6 reduced their stake in the latest filings. Short interest is 7.93% of the float, or 4.82 days of average trading volume. The share count rose 9.7% since 2014.
Related: IRMD analyst forecast, IRMD key metrics, IRMD dividend history. See the IRMD stock overview for the latest quote and news.
IRMD ownership FAQ
Who owns the most IRadimed stock?
The largest shareholders of IRadimed are BlackRock Inc (7.57%), Kayne Anderson Rudnick Investment Management LLC (3.10%), Renaissance Technologies Corp (3.08%), Copeland Capital Management, LLC (2.99%), Vanguard Capital Management, LLC (2.85%).
What percentage of IRadimed is owned by institutions?
Institutions hold 62.5% of IRadimed's shares outstanding; insiders hold 35.18%.
Which funds own IRadimed?
The largest fund holders of IRadimed are Vanguard MStar Total Stk Mkt Idx Invest (2.07%), iShares Russell 2000 ETF (1.65%), Virtus KAR Small-Cap Growth I (1.07%), JNL Multi-Manager Small Cap Growth A (0.80%), Fidelity Small Cap Index (0.72%).
What is IRadimed's short interest?
657K shares of IRadimed were sold short, 7.93% of the float; at the average daily volume it would take 4.82 days to cover.
Are insiders buying or selling IRadimed?
Of the latest 20 reported insider transactions in IRadimed (since November 24, 2025), 0 were purchases and 20 were sales.
How many shares of IRadimed are outstanding?
IRadimed has 12.8M shares outstanding, of which 8.3M are in the public float.