Stocks › Medical Devices › IRMD

IRadimed IRMD

US equityMarket cap rank #3182Medical Devices

$85.47 +$0.65 (+0.77%)

Pre-market · Oct 8, 8:20 am ET · After hours $85.47 0.00%

Open$84.55

Prev close$84.82

Day range$83.84 – $86.77

Volume197.9K

Market cap$1.09B

P/E (TTM)47.7

Dividend yield0.87%

Ownership & positioning

Who holds it, who is betting against it, and where the big money is moving

Institutional ownership63.4%-0.02 pts vs. prior quarter

Institutions holding261+0 vs. prior quarter

Insider trades (recent)16 buys / 34 sellsNet selling

Short interest5.47% of floatDays to cover 5.7 · as of 15 Sep 2026

Short-sale volume share16.2%5-day average of daily volume

Short-sale volume as % of daily volume

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: −$1.86M (9 inflow days, 11 outflow days).

Net flow by order size, last 20 sessions

Super/Big orders approximate institutional-size trades; Mid/Small approximate retail-size trades. Net buy minus sell value in each bucket, summed over the window.

The five largest holders on file together own 51.4% of shares outstanding.

Largest holders

Roger Susi34.32%
BlackRock7.57%
Vanguard Capital Management, LLC3.31%
Kayne Anderson Rudnick Investment Management, LLC3.10%
Renaissance Technologies Corp.3.08%
Copeland Capital Management, LLC3.06%
T. Rowe Price Group, Inc.2.55%
Geode Capital Management, LLC2.27%

By investor type

Mutual Fund48.80%
Individual/Insider34.85%
Hedge Fund8.90%
Public Company2.64%
Private Company1.12%
Government Pension Fund0.74%
Sovereign Wealth Fund0.58%
Insurance Company0.47%

Reported short interest has risen from 5.37% to 5.47% of float over the last 6 biweekly reports (30 Jun 2026 to 15 Sep 2026).

Recent institutional activity

Holder	Type	Period	Share change	New stake
Arrowstreet Capital, Limited Partnership	Mutual Fund	2026/Q3	+128,524	1.1%
RBC Global Asset Management Inc.	Mutual Fund	2026/Q3	+100,898	0.8%
First Trust Advisors L.P.	Mutual Fund	2026/Q3	+81,977	0.7%
Qube Research & Technologies Ltd	Mutual Fund	2026/Q3	+73,750	1.2%
Granahan Investment Management, LLC	Mutual Fund	2026/Q3	+70,066	0.6%
T. Rowe Price Group, Inc.	Mutual Fund	2026/Q3	+62,772	2.5%
Norges Bank Investment Management	Sovereign Wealth Fund	2026/Q3	+50,600	0.4%
Kayne Anderson Rudnick Investment Management, LLC	Mutual Fund	2026/Q3	+47,666	3.1%
Copeland Capital Management, LLC	Mutual Fund	2026/Q3	+32,535	3.1%
Teacher Retirement System of Texas	Government Pension Fund	2026/Q3	+26,252	0.3%
Marshall Wace LLP	Hedge Fund	2026/Q3	+25,298	0.2%
Alaska Permanent Fund Corporation	Sovereign Wealth Fund	2026/Q3	+21,763	0.2%
CA Indosuez (Switzerland) SA	Private Company	2026/Q3	+21,698	0.2%
Shaker Investments, L.L.C.	Mutual Fund	2026/Q3	+21,601	0.6%
Y-Intercept (Hong Kong) Limited	Mutual Fund	2026/Q3	+20,147	0.2%

Institutional buy/sell activity by reporting period, largest moves first.

Insider transactions

Date	Insider	Title	Transaction	Shares	Price	Held after
22 Sep 2026	Joseph Kiani	Director	Derivative Exercise and Retained	+698	–	698
2 Sep 2026	Monty Allen	Independent Director	Open Market Disposition	-1,419	$86.44	19,581
19 Jun 2026	John Glenn	Chief Financial Officer	Derivative Exercise and Sale	-2,319	$92.20	11,937
19 Jun 2026	John Glenn	Chief Financial Officer	Derivative Exercise and Retained	+3,477	–	11,937
3 Jun 2026	Hilda Scharen-Guivel	Independent Director	Open Market Disposition	-3,000	$95.00	5,598
31 May 2026	Roger Susi	Chairperson & CEO	Automatic Disposition	-2,500	$91.91	4,387,950
26 May 2026	Roger Susi	Chairperson & CEO	Automatic Disposition	-7,500	$92.93	4,390,450
18 May 2026	Roger Susi	Chairperson & CEO	Automatic Disposition	-7,500	$88.65	4,397,950
11 May 2026	Roger Susi	Chairperson & CEO	Automatic Disposition	-7,500	$85.90	4,405,450
4 May 2026	Roger Susi	Chairperson & CEO	Automatic Disposition	-7,500	$87.31	4,412,950
27 Apr 2026	Roger Susi	Chairperson & CEO	Automatic Disposition	-7,500	$89.70	4,420,450
20 Apr 2026	Roger Susi	Chairperson & CEO	Automatic Disposition	-7,500	$93.90	4,427,950
13 Apr 2026	Roger Susi	Chairperson & CEO	Automatic Disposition	-7,500	$94.55	4,435,450
6 Apr 2026	Roger Susi	Chairperson & CEO	Automatic Disposition	-7,500	$96.78	4,442,950
29 Mar 2026	Roger Susi	Chairperson & CEO	Automatic Disposition	-7,500	$96.53	4,450,450
23 Mar 2026	Roger Susi	Chairperson & CEO	Automatic Disposition	-7,500	$102.02	4,457,950
16 Mar 2026	Roger Susi	Chairperson & CEO	Automatic Disposition	-7,500	$102.43	4,465,450
9 Mar 2026	Roger Susi	Chairperson & CEO	Automatic Disposition	-7,500	$100.11	4,472,950
5 Mar 2026	Roger Susi	Chairperson & CEO	Automatic Disposition	-7,500	$99.12	4,480,450
2 Mar 2026	John Glenn	Chief Financial Officer	Other Derivative Acquisition	+8,907	–	8,907

From Form 4/Form 144 filings. Negative share counts are disposals (sales, gifts, or shares withheld for taxes); positive are acquisitions.

Short interest, by report

Report date	Shares short	% of float	Days to cover
15 Sep 2026	700,005	5.5%	5.7
31 Aug 2026	697,251	5.5%	8.4
14 Aug 2026	727,749	5.7%	4.8
31 Jul 2026	670,183	5.2%	5.8
15 Jul 2026	705,832	5.5%	5.0
30 Jun 2026	685,974	5.4%	4.9

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