INSP · Inspire Medical Systems, Inc. · Shareholders & Ownership
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 positionsNo 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 | As of | Notes |
|---|---|---|---|---|
| 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 |
|
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 |
|
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 |
|
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 |
|
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.
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