OM · Outset Medical, Inc. · Shareholders & Ownership
Market Cap
$71.43M
Shares
18.80M
Volume · Oct 20
382K
Avg daily vol (3M)
155.55K
Every disclosed holder of OM 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 OM
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) | 13,782,001 | 73.32% |
| Insiders (Forms 3, 4, 5) | 3,708,408 | 19.73% |
| 13D/G-only blocks | 9,404,852 | 50.03% |
| Remaining | 8,098,097 | -43.08% |
| Registered funds (N-PORT, not summed) | 4,004,060 | 21.30% |
Shares outstanding: 18,797,164, 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 OM
| # | Holder | Shares | As of | Notes |
|---|---|---|---|---|
| 1 |
BML Investment Partners, L.P.
13G
CIK 1373604 · Unknown · Oct 2, 2026
Rule 13d-1(c), passive investor
|
2,764,610 | ||
| 2 |
|
2,764,610 | ||
| 3 |
FMR LLC
13F
CIK 315066 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,742,887 | ||
| 3.1 |
Select Health Care Portfolio
Fund
S000007466 · Registered fund · May 31, 2026
Fidelity Select Portfolios, not summed
|
1,520,000 | ||
| 3.2 |
Fidelity Advisor Health Care Fund
Fund
S000005329 · Registered fund · Jul 31, 2026
Fidelity Advisor Series VII, not summed
|
800,000 | ||
| 3.3 |
VIP Health Care Portfolio
Fund
S000007742 · Registered fund · Jun 30, 2026
Variable Insurance Products Fund IV, not summed
|
280,000 | ||
| 3.4 |
Fidelity Extended Market Index Fund
Fund
S000006021 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
|
98,662 | ||
| 3.5 |
Fidelity Total Market Index Fund
Fund
S000006026 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
|
36,109 | ||
| 4 |
BML Capital Management, LLC
13F
CIK 1616824 · Exempt reporting adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,519,701 | ||
| 5 |
Durable Capital Partners LP
13G
CIK 1798849 · Investment adviser · Jan 3, 2025
Rule 13d-1(b), qualified institution
|
1,773,940 | ||
| 6 |
Alyeska Investment Group, L.P.
13G
CIK 1453072 · Registered investment adviser · Mar 31, 2025
Rule 13d-1(b), qualified institution
|
1,703,083 | ||
| 7 |
T. Rowe Price Investment Management, Inc.
13G
CIK 1897612 · Investment adviser · Mar 31, 2025
Rule 13d-1(b), qualified institution
|
1,603,056 | ||
| 8 |
Woodline Partners LP
13G
CIK 1784547 · Registered investment adviser · Mar 31, 2025
Rule 13d-1(b), qualified institution
|
1,325,784 | ||
| 9 |
AQR CAPITAL MANAGEMENT LLC
13F
CIK 1167557 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
998,961 | ||
| 9.1 |
AQR CAPITAL MANAGEMENT LLC
13G
CIK 1167557 · Registered investment adviser · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
|
998,961 | ||
| 9.2 |
AQR Small Cap Multi-Style Fund
Fund
S000040064 · Registered fund · Jun 30, 2026
AQR Funds, not summed
|
31,853 | ||
| 10 |
PERCEPTIVE ADVISORS LLC
13F
CIK 1224962 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
833,333 | ||
| 11 |
VANGUARD CAPITAL MANAGEMENT LLC
13F
CIK 2100119 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
780,134 | ||
| 12 |
BANK OF AMERICA CORP /DE/
13F
CIK 70858 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
665,847 | ||
| 12.1 |
BANK OF AMERICA CORP /DE/
13G
CIK 70858 · Bank · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
|
666,596 | ||
| 13 |
PFM Health Sciences, LP
13F
CIK 1442756 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
582,122 | ||
| 14 |
VANGUARD TOTAL STOCK MARKET INDEX FUND
Fund
S000002848 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
552,827 | ||
| 15 |
Ensign Peak Advisors, Inc
13F
CIK 1454984 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
434,341 | ||
| 16 |
BlackRock, Inc.
13F
CIK 2012383 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
418,211 | ||
| 16.1 |
BlackRock, Inc.
13G
CIK 2012383 · Holding company · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
|
365,556 | ||
| 16.2 |
iShares Micro-Cap ETF
Fund
S000004439 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
57,965 | ||
| 16.3 |
iShares Core S&P Total U.S. Stock Market ETF
Fund
S000004317 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
37,640 | ||
| 17 |
Assenagon Asset Management S.A.
13F
CIK 1546007 · Unknown · Sep 30, 2026
|
339,438 | ||
| 18 |
Peapod Lane Capital LLC
13F
CIK 2050979 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
331,951 | ||
| 19 |
MARSHALL WACE, LLP
13F
CIK 1318757 · Exempt reporting adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
211,993 | ||
| 20 |
VANGUARD EXTENDED MARKET INDEX FUND
Fund
S000002841 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
206,540 | ||
| 21 |
GEODE CAPITAL MANAGEMENT, LLC
13F
CIK 1214717 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
204,652 | ||
| 22 |
Stratos Wealth Partners, LTD.
13F
CIK 1612865 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
200,546 | ||
| 23 |
|
195,181 | ||
| 24 |
|
190,289 | ||
| 25 |
MORGAN STANLEY
13F
CIK 895421 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
181,983 | ||
| 26 |
MILLENNIUM MANAGEMENT LLC
13F
CIK 1273087 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
181,794 | ||
| 27 |
|
180,840 | ||
| 28 |
GOLDMAN SACHS GROUP INC
13F
CIK 886982 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
173,460 | ||
| 28.1 |
Goldman Sachs Absolute Return Tracker Fund
Fund
S000020314 · Registered fund · Jun 30, 2026
GOLDMAN SACHS TRUST, not summed
|
12,997 | ||
| 29 |
|
147,505 | ||
| 30 |
JANE STREET GROUP, LLC
13F
CIK 1595888 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
139,197 | ||
| 31 |
XTX Topco Ltd
13F
CIK 1828301 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
124,690 | ||
| 32 |
Catalio Capital Management, LP
13F
CIK 1958125 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
118,279 | ||
| 33 |
Bellevue Group AG
13G
CIK 1674546 · Non-US institution · Dec 31, 2023
Rule 13d-1(b), qualified institution
|
117,342 | ||
| 34 |
AMERIPRISE FINANCIAL INC
13G
CIK 820027 · Investment adviser · Aug 31, 2024
|
117,037 | ||
| 35 |
VANGUARD FIDUCIARY TRUST CO
13F
CIK 933478 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
114,912 | ||
| 36 |
GMT Capital Corp
13F
CIK 1106191 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
98,108 | ||
| 37 |
|
96,000 | ||
| 38 |
DIMENSIONAL FUND ADVISORS LP
13F
CIK 354204 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
90,698 | ||
| 38.1 |
Dimensional U.S. Small Cap ETF
Fund
S000070906 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
|
37,179 | ||
| 38.2 |
Dimensional U.S. Core Equity 2 ETF
Fund
S000070903 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
|
24,331 | ||
| 38.3 |
U.S. SMALL CAP PORTFOLIO
Fund
S000000971 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
12,889 | ||
| 38.4 |
Dimensional US Sustainability Core 1 ETF
Fund
S000076639 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
|
6,708 | ||
| 39 |
|
87,475 | ||
| 40 |
VANGUARD RUSSELL 2000 INDEX FUND
Fund
S000030003 · Registered fund · May 31, 2026
VANGUARD SCOTTSDALE FUNDS, not summed
|
85,953 | ||
| 41 |
PURA VIDA INVESTMENTS, LLC
13F
CIK 1590144 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
83,333 | ||
| 42 |
|
81,206 | ||
| 42.1 |
State Street Balanced Index Fund
Fund
S000082802 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
|
211 | ||
| 43 |
SUSQUEHANNA INTERNATIONAL GROUP, LLP
13F
CIK 1446194 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
81,023 | ||
| 44 |
C WorldWide Group Holding A/S
13F
CIK 1625244 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
66,666 | ||
| 45 |
IEQ CAPITAL, LLC
13F
CIK 1779789 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
52,127 | ||
| 46 |
NATIONAL BANK OF CANADA /FI/
13F
CIK 926171 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
45,622 | ||
| 47 |
|
45,184 | ||
| 48 |
NORTHERN TRUST CORP
13F
CIK 73124 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
43,574 | ||
| 49 |
RENAISSANCE TECHNOLOGIES LLC
13F
CIK 1037389 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
43,428 | ||
| 50 |
|
42,771 |
3 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 133 holders
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