OSIS · Osi Systems Inc · Shareholders & Ownership
Every disclosed holder of OSIS 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 OSIS
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) | 18,919,152 | 118.68% |
| Insiders (Forms 3, 4, 5) | 964,430 | 6.05% |
| 13D/G-only blocks | 803,602 | 5.04% |
| Remaining | 4,745,216 | -29.77% |
| Registered funds (N-PORT, not summed) | 10,866,714 | 68.16% |
Shares outstanding: 15,941,968, 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 OSIS
| # | Holder | Shares | As of | Notes |
|---|---|---|---|---|
| 1 |
BlackRock, Inc.
13F
CIK 2012383 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,552,027 | ||
| 1.1 |
iShares Core S&P Small-Cap ETF
Fund
S000004313 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
933,522 | ||
| 1.2 |
iShares Russell 2000 ETF
Fund
S000004344 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
415,570 | ||
| 1.3 |
iShares Russell 2000 Growth ETF
Fund
S000004343 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
148,045 | ||
| 1.4 |
iShares S&P Small-Cap 600 Growth ETF
Fund
S000004314 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
139,109 | ||
| 1.5 |
iShares Defense Industrials Active ETF
Fund
S000092375 · Registered fund · Jul 31, 2026
BlackRock ETF Trust, not summed
|
49,170 | ||
| 2 |
FMR LLC
13F
CIK 315066 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,738,166 | ||
| 2.1 |
FMR LLC
13G
CIK 315066 · Holding company · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
|
1,784,216 | ||
| 2.2 |
Fidelity Small Cap Growth Fund
Fund
S000007193 · Registered fund · Jul 31, 2026
Fidelity Securities Fund, not summed
|
267,042 | ||
| 2.3 |
Fidelity Small Cap Value Fund
Fund
S000007194 · Registered fund · Jul 31, 2026
Fidelity Securities Fund, not summed
|
261,400 | ||
| 2.4 |
Fidelity Small Cap Index Fund
Fund
S000033638 · Registered fund · Jul 31, 2026
Fidelity Salem Street Trust, not summed
|
175,207 | ||
| 2.5 |
Fidelity Stock Selector Small Cap Fund
Fund
S000005453 · Registered fund · Jul 31, 2026
Fidelity Capital Trust, not summed
|
154,102 | ||
| 3 |
VANGUARD PORTFOLIO MANAGEMENT LLC
13F
CIK 2100121 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,272,016 | ||
| 4 |
Jupiter Topco LLC
13F
CIK 2146052 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
905,925 | ||
| 4.1 |
JANUS HENDERSON GROUP PLC
13G
CIK 1274173 · Investment adviser · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
|
905,925 | ||
| 5 |
Mawer Investment Management Ltd.
13G
CIK 1538449 · Registered investment adviser · Dec 31, 2025
Rule 13d-1(b), qualified institution
|
803,602 | ||
| 6 |
VANGUARD CAPITAL MANAGEMENT LLC
13F
CIK 2100119 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
703,070 | ||
| 6.1 |
VANGUARD CAPITAL MANAGEMENT LLC
13G
CIK 2100119 · Registered investment adviser · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
|
824,510 | ||
| 7 |
|
674,053 | ||
| 7.1 |
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
|
142,585 | ||
| 7.2 |
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
|
88,955 | ||
| 7.3 |
State Street(R) SPDR(R) S&P Kensho New Economies Composite ETF
Fund
S000063362 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
33,000 | ||
| 7.4 |
State Street(R) SPDR(R) S&P Kensho Future Security ETF
Fund
S000059702 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
8,821 | ||
| 7.5 |
STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO
Fund
S000050332 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
|
5,559 | ||
| 8 |
Capital International Investors
13F
CIK 1562230 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
596,331 | ||
| 9 |
SMALLCAP World Fund Inc
Fund
S000009599 · Registered fund · Jun 30, 2026
SMALLCAP World Fund Inc, not summed
|
580,137 | ||
| 10 |
VANGUARD TOTAL STOCK MARKET INDEX FUND
Fund
S000002848 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
496,472 | ||
| 11 |
GEODE CAPITAL MANAGEMENT, LLC
13F
CIK 1214717 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
463,787 | ||
| 12 |
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
|
452,547 | ||
| 13 |
Channing Capital Management, LLC
13F
CIK 1302404 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
432,851 | ||
| 13.1 |
CHANNING INTRINSIC VALUE SMALL-CAP FUND
Fund
S000071821 · Registered fund · Jul 31, 2026
Valued Advisers Trust, not summed
|
1,130 | ||
| 14 |
Hood River Capital Management LLC
13F
CIK 1578177 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
414,304 | ||
| 14.1 |
Hood River Small-Cap Growth Fund
Fund
S000012813 · Registered fund · Jun 30, 2026
Manager Directed Portfolios, not summed
|
275,111 | ||
| 15 |
DIMENSIONAL FUND ADVISORS LP
13F
CIK 354204 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
414,034 | ||
| 15.1 |
U.S. SMALL CAP PORTFOLIO
Fund
S000000971 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
77,783 | ||
| 15.2 |
U.S. MICRO CAP PORTFOLIO
Fund
S000000948 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
61,580 | ||
| 15.3 |
Dimensional U.S. Small Cap ETF
Fund
S000070906 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
|
55,245 | ||
| 15.4 |
Dimensional U.S. Core Equity 2 ETF
Fund
S000070903 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
|
32,638 | ||
| 15.5 |
U.S. CORE EQUITY 2 PORTFOLIO
Fund
S000000980 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
25,265 | ||
| 16 |
Janus Henderson Triton Fund
Fund
S000010485 · Registered fund · Jun 30, 2026
Janus Investment Fund, not summed
|
412,315 | ||
| 17 |
VANGUARD INFORMATION TECHNOLOGY INDEX FUND
Fund
S000004452 · Registered fund · May 31, 2026
VANGUARD WORLD FUND, not summed
|
400,415 | ||
| 18 |
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
13F
CIK 1644956 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
379,351 | ||
| 18.1 |
William Blair Small Cap Growth Fund
Fund
S000008602 · Registered fund · Jun 30, 2026
WILLIAM BLAIR FUNDS, not summed
|
91,980 | ||
| 18.2 |
William Blair Small-Mid Cap Core Fund
Fund
S000066499 · Registered fund · Jun 30, 2026
WILLIAM BLAIR FUNDS, not summed
|
15,147 | ||
| 19 |
VANGUARD SMALL-CAP INDEX FUND
Fund
S000002845 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
359,266 | ||
| 20 |
NEUBERGER BERMAN GROUP LLC
13F
CIK 1465109 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
324,715 | ||
| 20.1 |
Neuberger Intrinsic Value Fund
Fund
S000028676 · Registered fund · May 31, 2026
NEUBERGER BERMAN EQUITY FUNDS, not summed
|
66,446 | ||
| 21 |
PRICE T ROWE ASSOCIATES INC /MD/
13F
CIK 80255 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
314,717 | ||
| 21.1 |
T. Rowe Price Integrated U.S. Small-Cap Growth Equity Fund
Fund
S000002074 · Registered fund · Jun 30, 2026
T. ROWE PRICE INTEGRATED EQUITY FUNDS, INC., not summed
|
177,008 | ||
| 21.2 |
T. Rowe Price Small-Cap Stock Fund, Inc.
Fund
S000002120 · Registered fund · Jun 30, 2026
T. ROWE PRICE SMALL-CAP STOCK FUND, INC., not summed
|
45,303 | ||
| 21.3 |
T. Rowe Price Institutional Small-Cap Stock Fund
Fund
S000002094 · Registered fund · Jun 30, 2026
T. Rowe Price Equity Funds, Inc., not summed
|
24,377 | ||
| 21.4 |
T. Rowe Price Integrated U.S. Small-Mid Cap Core Equity Fund
Fund
S000052904 · Registered fund · Jun 30, 2026
T. ROWE PRICE INTEGRATED EQUITY FUNDS, INC., not summed
|
13,153 | ||
| 21.5 |
T. Rowe Price Small-Cap Index Fund
Fund
S000051327 · Registered fund · Jun 30, 2026
T. ROWE PRICE INDEX TRUST, INC., not summed
|
2,419 | ||
| 22 |
|
306,538 | ||
| 23 |
MILLENNIUM MANAGEMENT LLC
13F
CIK 1273087 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
298,480 | ||
| 24 |
Invesco Ltd.
13F
CIK 914208 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
263,207 | ||
| 24.1 |
Invesco Aerospace & Defense ETF
Fund
S000003039 · Registered fund · Jul 31, 2026
Invesco Exchange-Traded Fund Trust, not summed
|
92,609 | ||
| 24.2 |
Invesco S&P SmallCap Momentum ETF
Fund
S000003024 · Registered fund · Jul 31, 2026
Invesco Exchange-Traded Fund Trust, not summed
|
83,008 | ||
| 24.3 |
Invesco S&P SmallCap Information Technology ETF
Fund
S000028301 · Registered fund · May 31, 2026
Invesco Exchange-Traded Fund Trust II, not summed
|
31,241 | ||
| 24.4 |
Invesco RAFI US 1500 Small-Mid ETF
Fund
S000013120 · Registered fund · Jul 31, 2026
Invesco Exchange-Traded Fund Trust, not summed
|
16,532 | ||
| 24.5 |
Invesco S&P SmallCap 600 Revenue ETF
Fund
S000064596 · Registered fund · May 31, 2026
Invesco Exchange-Traded Fund Trust II, not summed
|
7,158 | ||
| 25 |
Janus Henderson Venture Fund
Fund
S000010488 · Registered fund · Jun 30, 2026
Janus Investment Fund, not summed
|
262,977 | ||
| 26 |
PRIMECAP MANAGEMENT CO/CA/
13F
CIK 763212 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
258,180 | ||
| 26.1 |
PRIMECAP Odyssey Aggressive Growth Fund
Fund
S000005541 · Registered fund · Jul 31, 2026
PRIMECAP Odyssey Funds, not summed
|
174,580 | ||
| 26.2 |
PRIMECAP Odyssey Growth Fund
Fund
S000005540 · Registered fund · Jul 31, 2026
PRIMECAP Odyssey Funds, not summed
|
65,500 | ||
| 27 |
|
250,194 | ||
| 28 |
VANGUARD SMALL-CAP VALUE INDEX FUND
Fund
S000002847 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
227,486 | ||
| 29 |
AMERICAN CENTURY COMPANIES INC
13F
CIK 748054 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
223,142 | ||
| 29.1 |
Small Cap Growth Fund
Fund
S000006193 · Registered fund · Jul 31, 2026
American Century Mutual Funds, Inc., not summed
|
140,655 | ||
| 29.2 |
Global Small Cap Fund
Fund
S000053103 · Registered fund · May 31, 2026
American Century World Mutual Funds, Inc., not summed
|
1,510 | ||
| 30 |
NEUMEIER POMA INVESTMENT COUNSEL LLC
13F
CIK 1044936 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
222,515 | ||
| 31 |
Clark Capital Management Group, Inc.
13F
CIK 1352187 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
218,913 | ||
| 32 |
SYSTEMATIC FINANCIAL MANAGEMENT LP
13F
CIK 1085936 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
216,098 | ||
| 33 |
|
210,866 | ||
| 34 |
VAN ECK ASSOCIATES CORP
13F
CIK 869178 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
199,636 | ||
| 35 |
MORGAN STANLEY
13F
CIK 895421 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
197,990 | ||
| 35.1 |
E*TRADE No Fee Total Market Index Fund
Fund
S000090722 · Registered fund · Jul 31, 2026
E Trade Trust, not summed
|
27 | ||
| 36 |
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
13F
CIK 884546 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
193,801 | ||
| 36.1 |
Schwab U.S. Small-Cap ETF
Fund
S000026636 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
74,606 | ||
| 36.2 |
Schwab Small-Cap Index Fund
Fund
S000005912 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
|
38,862 | ||
| 36.3 |
Schwab Fundamental U.S. Small Company ETF
Fund
S000040878 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
27,168 | ||
| 36.4 |
Schwab U.S. Broad Market ETF
Fund
S000026631 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
9,360 | ||
| 36.5 |
Schwab Total Stock Market Index Fund
Fund
S000005913 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
|
9,287 | ||
| 37 |
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.
13F
CIK 1705339 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
192,062 | ||
| 37.1 |
Global X Defense Tech ETF
Fund
S000081193 · Registered fund · May 31, 2026
GLOBAL X FUNDS, not summed
|
214,927 | ||
| 37.2 |
Global X Russell 2000 ETF
Fund
S000085029 · Registered fund · Jul 31, 2026
GLOBAL X FUNDS, not summed
|
7,679 | ||
| 38 |
JPMORGAN CHASE & CO
13F
CIK 19617 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
189,751 | ||
| 39 |
AMERIPRISE FINANCIAL INC
13F
CIK 820027 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
185,377 | ||
| 39.1 |
Columbia Small Cap Index Fund
Fund
S000010827 · Registered fund · May 31, 2026
COLUMBIA FUNDS SERIES TRUST, not summed
|
23,115 | ||
| 39.2 |
Columbia Variable Portfolio - Small Company Growth Fund
Fund
S000010658 · Registered fund · Jun 30, 2026
COLUMBIA FUNDS VARIABLE INSURANCE TRUST, not summed
|
8,456 | ||
| 39.3 |
Variable Portfolio - Partners Small Cap Growth Fund
Fund
S000028697 · Registered fund · Jun 30, 2026
Columbia Funds Variable Series Trust II, not summed
|
7,335 | ||
| 40 |
NORTHERN TRUST CORP
13F
CIK 73124 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
181,359 | ||
| 40.1 |
Small Cap Index Fund
Fund
S000001245 · Registered fund · Jun 30, 2026
Northern Funds, not summed
|
8,111 | ||
| 40.2 |
Small Cap Core Fund
Fund
S000001244 · Registered fund · Jun 30, 2026
Northern Funds, not summed
|
3,244 | ||
| 40.3 |
FlexShares Morningstar US Market Factor Tilt Index Fund
Fund
S000033312 · Registered fund · Jul 31, 2026
FlexShares Trust, not summed
|
510 | ||
| 41 |
VANGUARD EXTENDED MARKET INDEX FUND
Fund
S000002841 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
177,767 | ||
| 42 |
WELLINGTON MANAGEMENT GROUP LLP
13F
CIK 902219 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
177,616 | ||
| 43 |
BANK OF AMERICA CORP /DE/
13F
CIK 70858 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
137,340 | ||
| 44 |
Clearbridge Investments, LLC
13F
CIK 1348883 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
135,261 | ||
| 45 |
VOYA INVESTMENT MANAGEMENT LLC
13F
CIK 1068837 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
125,194 | ||
| 46 |
GOLDMAN SACHS GROUP INC
13F
CIK 886982 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
119,675 | ||
| 46.1 |
Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF
Fund
S000048296 · Registered fund · May 31, 2026
Goldman Sachs ETF Trust, not summed
|
3,875 | ||
| 46.2 |
Multi-Manager U.S. Small Cap Equity Fund
Fund
S000051363 · Registered fund · Apr 30, 2026
Goldman Sachs Trust II, not summed
|
1,495 | ||
| 46.3 |
Goldman Sachs Multi-Manager Global Equity Fund
Fund
S000049146 · Registered fund · Jul 31, 2026
Goldman Sachs Trust II, not summed
|
1,008 | ||
| 46.4 |
Goldman Sachs Innovate Equity ETF
Fund
S000068597 · Registered fund · May 31, 2026
Goldman Sachs ETF Trust, not summed
|
662 | ||
| 46.5 |
Goldman Sachs Absolute Return Tracker Fund
Fund
S000020314 · Registered fund · Jun 30, 2026
GOLDMAN SACHS TRUST, not summed
|
228 | ||
| 47 |
NOMURA ASSET MANAGEMENT INTERNATIONAL INC.
13F
CIK 921739 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
116,736 | ||
| 47.1 |
Nomura Small Cap Growth Fund
Fund
S000006286 · Registered fund · Jun 30, 2026
IVY FUNDS, not summed
|
78,766 | ||
| 47.2 |
Nomura VIP Small Cap Growth Series
Fund
S000006233 · Registered fund · Jun 30, 2026
Ivy Variable Insurance Portfolios, not summed
|
15,403 | ||
| 48 |
|
116,150 | ||
| 49 |
|
115,578 | ||
| 50 |
VANGUARD FIDUCIARY TRUST CO
13F
CIK 933478 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
111,720 |
74 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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