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INSP · Inspire Medical Systems, Inc. · Shareholders & Ownership

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$71.07 -0.27 (-0.38%)
Market Cap
$2.06B
Shares
28.91M
Volume · Oct 21 554.28K Avg daily vol (3M) 798.23K

Every disclosed holder of INSP in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

Who Owns INSP

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions

No chart: the summed disclosures exceed shares outstanding, so they are not parts of one whole.

Holder group Shares % Out
Institutional (13F) 36,710,768 126.98%
Insiders (Forms 3, 4, 5) 525,093 1.82%
13D/G-only blocks 3,364,212 11.64%
Remaining 11,689,698 -40.43%
Registered funds (N-PORT, not summed) 12,742,498 44.08%

Shares outstanding: 28,910,375, the issuer's latest cover-page count restated onto today's split basis.

Remaining is negative: the summed disclosures exceed shares outstanding, as when filings are dated at different times or holders that do not disclose their links count the same shares. It is flagged, not clipped.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of INSP

# Holder Shares
1
BlackRock, Inc.
13F CIK 2012383 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
4,737,519
1.1
BlackRock, Inc.
13G CIK 2012383 · Holding company · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
4,163,016
1.2
iShares Core S&P Small-Cap ETF
Fund S000004313 · Registered fund · Jun 30, 2026
iShares Trust, not summed
1,580,006
1.3
iShares Russell 2000 ETF
Fund S000004344 · Registered fund · Jun 30, 2026
iShares Trust, not summed
750,558
1.4
iShares S&P Small-Cap 600 Growth ETF
Fund S000004314 · Registered fund · Jun 30, 2026
iShares Trust, not summed
234,886
1.5
iShares Russell 2000 Growth ETF
Fund S000004343 · Registered fund · Jun 30, 2026
iShares Trust, not summed
232,083
2
WELLINGTON MANAGEMENT GROUP LLP
13F CIK 902219 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
2,382,660
2.1
VANGUARD HEALTH CARE FUND
Fund S000002922 · Registered fund · Jul 31, 2026
VANGUARD SPECIALIZED FUNDS, not summed
2,093,826
3
VANGUARD PORTFOLIO MANAGEMENT LLC
13F CIK 2100121 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
2,088,961
3.1
VANGUARD PORTFOLIO MANAGEMENT LLC
13G CIK 2100121 · Registered investment adviser · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
2,126,116
4
Soleus Capital Management, L.P.
13F CIK 1802630 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
1,931,436
5
Soleus Capital Master Fund, L.P.
13G CIK 1812275 · Unknown · Jun 30, 2026
Rule 13d-1(c), passive investor
1,931,436
6
AQR CAPITAL MANAGEMENT LLC
13F CIK 1167557 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,856,800
6.1
AQR CAPITAL MANAGEMENT LLC
13G CIK 1167557 · Registered investment adviser · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
1,856,800
6.2
AQR Long-Short Equity Fund
Fund S000041116 · Registered fund · Jun 30, 2026
AQR Funds, not summed
107,642
6.3
AQR Equity Market Neutral Fund
Fund S000046740 · Registered fund · Jun 30, 2026
AQR Funds, not summed
96,558
6.4
AQR Multi-Asset Fund
Fund S000029959 · Registered fund · Jun 30, 2026
AQR Funds, not summed
8,223
6.5
AQR Global Fund
Fund S000024170 · Registered fund · Jun 30, 2026
AQR Funds, not summed
4,194
7
UBS Group AG
13F CIK 1610520 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
1,645,511
8
D. E. Shaw & Co., Inc.
13F CIK 1009207 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
1,470,462
9
NOMURA HOLDINGS INC
13F CIK 1163653 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
1,369,410
10
DEERFIELD MANAGEMENT COMPANY, L.P.
13F CIK 1009258 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,296,862
11
Deerfield Management Company, L.P.
13G CIK 1352546 · Unknown · May 14, 2026
Rule 13d-1(c), passive investor
1,296,862
12
VANGUARD CAPITAL MANAGEMENT LLC
13F CIK 2100119 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,270,928
13
STATE STREET CORP
13F CIK 93751 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
1,206,494
13.1
State Street(R) SPDR(R) Portfolio S&P 600(TM) Small Cap ETF
Fund S000041317 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
240,113
13.2
State Street(R) SPDR(R) S & P 600(TM) Small Cap Growth ETF
Fund S000006990 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
145,422
13.3
State Street(R) SPDR(R) S&P(R) Health Care Equipment ETF
Fund S000012330 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
58,771
13.4
State Street(R) SPDR(R) S&P Kensho New Economies Composite ETF
Fund S000063362 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
51,920
13.5
STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO
Fund S000050332 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
10,309
14
VANGUARD TOTAL STOCK MARKET INDEX FUND
Fund S000002848 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
914,149
15
MORGAN STANLEY
13F CIK 895421 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
791,222
15.1
Vitality Portfolio
Fund S000074797 · Registered fund · Mar 31, 2026
MORGAN STANLEY INSTITUTIONAL FUND INC, not summed
1,030
15.2
E*TRADE No Fee Total Market Index Fund
Fund S000090722 · Registered fund · Jul 31, 2026
E Trade Trust, not summed
256
16
Artisan Partners Limited Partnership
13F CIK 1466153 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
732,323
16.1
Artisan International Small-Mid Fund
Fund S000006494 · Registered fund · Jun 30, 2026
Artisan Partners Funds Inc., not summed
456,014
17
GEODE CAPITAL MANAGEMENT, LLC
13F CIK 1214717 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
700,836
18
BRAIDWELL LP
13F CIK 1920938 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
677,570
19
VANGUARD SMALL-CAP INDEX FUND
Fund S000002845 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
660,263
20
GOLDMAN SACHS GROUP INC
13F CIK 886982 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
645,858
20.1
Multi-Manager U.S. Small Cap Equity Fund
Fund S000051363 · Registered fund · Apr 30, 2026
Goldman Sachs Trust II, not summed
1,582
20.2
Goldman Sachs Absolute Return Tracker Fund
Fund S000020314 · Registered fund · Jun 30, 2026
GOLDMAN SACHS TRUST, not summed
1,336
20.3
Goldman Sachs MarketBeta(R) Russell 1000 Growth Equity ETF
Fund S000083005 · Registered fund · May 31, 2026
Goldman Sachs ETF Trust, not summed
484
21
Assenagon Asset Management S.A.
13F CIK 1546007 · Unknown · Sep 30, 2026
643,315
22
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC
13F CIK 861177 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
546,020
23
CITADEL ADVISORS LLC
13F CIK 1423053 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
506,334
24
SG Americas Securities, LLC
13F CIK 1313360 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
491,703
25
BNP PARIBAS ARBITRAGE, SA
13F CIK 1166588 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
428,069
26
RENAISSANCE TECHNOLOGIES LLC
13F CIK 1037389 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
426,000
27
VANGUARD SMALL-CAP GROWTH INDEX FUND
Fund S000002846 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
379,022
28
ADAR1 Capital Management, LLC
13F CIK 1940272 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
374,617
29
Aberdeen Group plc
13F CIK 1716774 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
358,968
30
NORTHERN TRUST CORP
13F CIK 73124 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
334,039
30.1
Small Cap Value Fund
Fund S000001246 · Registered fund · Jun 30, 2026
Northern Funds, not summed
18,456
30.2
Small Cap Index Fund
Fund S000001245 · Registered fund · Jun 30, 2026
Northern Funds, not summed
14,708
30.3
FlexShares Morningstar US Market Factor Tilt Index Fund
Fund S000033312 · Registered fund · Jul 31, 2026
FlexShares Trust, not summed
2,844
30.4
Small Cap Core Fund
Fund S000001244 · Registered fund · Jun 30, 2026
Northern Funds, not summed
2,565
31
BARCLAYS PLC
13F CIK 312069 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
307,270
32
VANGUARD EXTENDED MARKET INDEX FUND
Fund S000002841 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
302,273
33
FEDERATED HERMES, INC.
13F CIK 1056288 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
272,130
34
Nantahala Capital Management, LLC
13F CIK 1472322 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
269,474
35
FMR LLC
13F CIK 315066 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
267,871
35.1
Fidelity Small Cap Index Fund
Fund S000033638 · Registered fund · Jul 31, 2026
Fidelity Salem Street Trust, not summed
317,411
35.2
Fidelity Extended Market Index Fund
Fund S000006021 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
134,981
35.3
Fidelity Enhanced Small Cap Core ETF
Fund S000081807 · Registered fund · Jun 30, 2026
Fidelity Covington Trust, not summed
107,366
35.4
Fidelity Enhanced Mid Cap Core ETF
Fund S000081803 · Registered fund · Jun 30, 2026
Fidelity Covington Trust, not summed
104,563
35.5
Strategic Advisers U.S. Total Stock Fund
Fund S000084926 · Registered fund · May 31, 2026
Fidelity Rutland Square Trust II, not summed
69,268
36
BANK OF AMERICA CORP /DE/
13F CIK 70858 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
248,802
37
Walleye Capital LLC
13F CIK 1758720 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
245,763
38
Rock Springs Capital Management LP
13F CIK 1595725 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
244,000
39
Federated Hermes MDT Mid Cap Growth Fund
Fund S000009733 · Registered fund · Jul 31, 2026
Federated Hermes Equity Funds, not summed
236,764
40
VANGUARD STRATEGIC EQUITY FUND
Fund S000002593 · Registered fund · Jun 30, 2026
VANGUARD HORIZON FUNDS, not summed
230,603
41
CAPITAL FUND MANAGEMENT S.A.
13F CIK 1323645 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
219,873
42
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
13F CIK 884546 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
210,091
42.1
Schwab U.S. Small-Cap ETF
Fund S000026636 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
125,671
42.2
Schwab Small-Cap Index Fund
Fund S000005912 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
70,511
42.3
Schwab U.S. Broad Market ETF
Fund S000026631 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
15,479
42.4
Schwab Total Stock Market Index Fund
Fund S000005913 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
12,835
43
NORGES BANK
13F CIK 1374170 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
198,272
44
VANGUARD FIDUCIARY TRUST CO
13F CIK 933478 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
190,563
45
VANGUARD EXPLORER FUND
Fund S000002578 · Registered fund · Jul 31, 2026
VANGUARD EXPLORER FUND, not summed
182,216
46
DEUTSCHE BANK AG\
13F CIK 948046 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
176,200
46.1
DWS Small Cap Index VIP
Fund S000006223 · Registered fund · Jun 30, 2026
DEUTSCHE DWS INVESTMENTS VIT FUNDS, not summed
4,564
47
TUDOR INVESTMENT CORP ET AL
13F CIK 923093 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
169,095
48
PRICE T ROWE ASSOCIATES INC /MD/
13F CIK 80255 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
167,733
48.1
T. Rowe Price Health Sciences Fund, Inc.
Fund S000002088 · Registered fund · Jun 30, 2026
T. ROWE PRICE HEALTH SCIENCES FUND, INC., not summed
98,748
48.2
T. Rowe Price Health Sciences Portfolio
Fund S000002083 · Registered fund · Jun 30, 2026
T. ROWE PRICE EQUITY SERIES, INC., not summed
7,200
48.3
T. Rowe Price Small-Cap Index Fund
Fund S000051327 · Registered fund · Jun 30, 2026
T. ROWE PRICE INDEX TRUST, INC., not summed
4,377
48.4
T. Rowe Price Extended Equity Market Index Fund
Fund S000002090 · Registered fund · Jun 30, 2026
T. ROWE PRICE INDEX TRUST, INC., not summed
4,081
49
CANADA PENSION PLAN INVESTMENT BOARD
13F CIK 1283718 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
165,100
50
Herbert Timothy P.
Insider CIK 1737136 · Feb 20, 2026
Director, CEO and President, issuer-wide
163,492

46 more nested rows are not shown here; Every filing lists them all.

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Showing 1–50 of 425 holders

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Key facts CIK 1609550 CUSIP 457730109 13F (30d) 35 filings 34 filers Visit website Investor relations