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OSIS · Osi Systems Inc · Shareholders & Ownership

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$198.04 +1.11 (+0.56%)
Market Cap
$3.14B
Shares
15.94M
Volume · Oct 22 63.54K Avg daily vol (3M) 227.48K

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 positions

No 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
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
STATE STREET CORP
13F CIK 93751 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
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
EDRICK ALAN I
Insider CIK 1195340 · Aug 24, 2026
Director, issuer-wide
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
CHOPRA DEEPAK
Insider CIK 1047058 · Aug 24, 2026
Director, issuer-wide
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
UBS Group AG
13F CIK 1610520 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
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
Swedbank AB
13F CIK 946431 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
116,150
49
MEHRA AJAY
Insider CIK 1047059 · Aug 24, 2026
Director, PRESIDENT AND CEO, issuer-wide
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.

Showing 1–50 of 526 holders

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Key facts CIK 1039065 CUSIP 671044105 13F (30d) 41 filings 41 filers Visit website Investor relations