Inspire Medical Systems INSP Institutional Ownership

NYSE INSP

$66.52 +4.38 (+7.05%)

As of: Sep 9, 2026 · 3:59 PM EDT

Institutions by Trading Activity

274 Institutions

Increased 165 60.2%

Unchanged 33 12.0%

Reduced 76 27.7%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

129.24%

▲+7.67 pp QoQ

Shares Held by Institutions

37.27Mn

of 28.84Mn outstanding

▲+23.51% QoQ

Shares Outstanding

28.84Mn

-8.43Mn held outside 13F filers

Institutional Investors

274

filed 13F for Jun 2026

▼-24 vs prior quarter

Net Shares Added (QoQ)

+7.09Mn

accumulated since last quarter

Value of Holdings

$2.35Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Inspire Medical Systems, Inc. (NYSE:INSP) has 274 institutional investors with active 13F positions as of June 2026.

Collectively, these holders controlled 129.2% of Inspire Medical Systems's outstanding shares in June 2026, up from 121.6% in March 2026.
They increased total shares held in Inspire Medical Systems by 23.51% from the prior quarter, while the number of investors in INSP decreased 22.82% year over year.
During the quarter, 165 of these 274 funds increased positions in INSP, 76 reduced exposure, and 33 held steady.
Institutional investors collectively held 37.27Mn shares in Inspire Medical Systems as of June 2026, up by 7.09Mn shares quarter on quarter, and up 3.46Mn shares year over year.
As of June 30, 2026, the biggest holder of Inspire Medical Systems is BlackRock, Inc. at 4.74Mn shares, representing 16.43% of shares outstanding.
Leading buyers of Inspire Medical Systems shares for the quarter ending June 2026 were AQR CAPITAL MANAGEMENT LLC (1.55Mn), Nomura Holdings Inc (1.37Mn), Soleus Capital Management, L.P. (1.36Mn), BlackRock, Inc. (1.19Mn), UBS Group AG (1.01Mn).
Top sellers of INSP stock for the quarter ending June 2026 included DEERFIELD MANAGEMENT COMPANY, L.P. (1.41Mn), Morgan Stanley (659.41K), DEUTSCHE BANK AG\ (336.98K), MILLENNIUM MANAGEMENT LLC (292.0K), Royal Bank Of Canada (245.25K).
Per Business Quant, the top 10 investors in INSP for the quarter ending June 2026 include BlackRock, Inc. (4.74Mn), WELLINGTON MANAGEMENT GROUP LLP (2.38Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (2.09Mn), Soleus Capital Management, L.P. (1.93Mn), AQR CAPITAL MANAGEMENT LLC (1.86Mn), UBS Group AG (1.65Mn), D. E. Shaw & Co., Inc. (1.47Mn), Nomura Holdings Inc (1.37Mn), DEERFIELD MANAGEMENT COMPANY, L.P. (1.3Mn), VANGUARD CAPITAL MANAGEMENT LLC (1.27Mn).

Form 13F Holdings

274 Institutional Holders

Report period 30 Jun, 2026

Total shares held 37.27Mn

Of outstanding 129.24%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	4,737,519	16.43%	▲1,187,965	+33.47%	$211.34Mn
2	WELLINGTON MANAGEMENT GROUP LLP	0000902219	2,382,660	8.26%	▼153,294	-6.04%	$106.29Mn
3	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	2,088,961	7.24%	▲451,788	+27.60%	$93.19Mn
4	Soleus Capital Management, L.P.	0001802630	1,931,436	6.70%	▲1,355,137	+235.14%	$86.16Mn
5	AQR CAPITAL MANAGEMENT LLC	0001167557	1,856,800	6.44%	▲1,548,138	+501.56%	$80.94Mn
6	UBS Group AG	0001610520	1,645,511	5.71%	▲1,006,583	+157.54%	$73.41Mn
7	D. E. Shaw & Co., Inc.	0001009207	1,470,462	5.10%	▲281,925	+23.72%	$65.60Mn
8	Nomura Holdings Inc	0001163653	1,369,410	4.75%	▲1,369,410	0.00%	$61.09Mn
9	DEERFIELD MANAGEMENT COMPANY, L.P.	0001009258	1,296,862	4.50%	▼1,406,376	-52.03%	$57.85Mn
10	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	1,270,928	4.41%	▲4,190	+0.33%	$56.70Mn
11	State Street Corp	0000093751	1,206,494	4.18%	▲250,483	+26.20%	$53.82Mn
12	Assenagon Asset Management S.A.	0001546007	864,395	3.00%	▲344,221	+66.17%	$38.56Mn
13	Morgan Stanley	0000895421	791,222	2.74%	▼659,412	-45.46%	$35.30Mn
14	Artisan Partners Limited Partnership	0001466153	732,323	2.54%	▼48,252	-6.18%	$32.67Mn
15	GEODE CAPITAL MANAGEMENT, LLC	0001214717	700,836	2.43%	▲190,602	+37.36%	$31.27Mn
16	BRAIDWELL LP	0001920938	677,570	2.35%	0	0.00%	$30.23Mn
17	Goldman Sachs Group Inc	0000886982	645,858	2.24%	▼18,145	-2.73%	$28.81Mn
18	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	0000861177	546,020	1.89%	▲97,233	+21.67%	$24.36Mn
19	CITADEL ADVISORS LLC	0001423053	506,334	1.76%	▲112,258	+28.49%	$22.59Mn
20	SG Americas Securities, LLC	0001313360	491,703	1.71%	▲386,556	+367.63%	$21.94K

Showing 1 to 20 of 274 holders