Company · Ownership research

OSI SYSTEMS INC OSIS

CIK 0001039065 · CUSIP 671044105

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 671044105 (OSIS), not CUSIP 671044905 (OSIS), CUSIP 671044955 (OSIS), and does not merge CUSIPs.

This page lists the top 20 of 360 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	BlackRock, Inc. CIK 2012383 · View history	$653.44M 2,561,902 shares	0.01%	+57.65K(+2.30%)Added	SEC filing ↗ Feb 12, 2026	▾
02	VANGUARD GROUP INC CIK 102909 · View history	$537.31M 2,106,595 shares	0.01%	-981(0.00%)Reduced	SEC filing ↗ Jan 29, 2026	▾
03	FMR LLC CIK 315066 · View history	$422.74M 1,657,430 shares	0.02%	+567.16K(+52.00%)Added	SEC filing ↗ Feb 17, 2026	▾
04	Mawer Investment Management Ltd. CIK 1538449 · View history	$204.97M 803,602 shares	1.15%	-52.78K(-6.20%)Reduced	SEC filing ↗ Feb 10, 2026	▾
05	JANUS HENDERSON GROUP PLC CIK 1274173 · View history	$191.95M 752,567 shares	0.09%	-247.72K(-24.80%)Reduced	SEC filing ↗ Feb 17, 2026	▾
06	Capital International Investors CIK 1562230 · View history	$172.00M 674,343 shares	0.03%	0(0.00%)Unchanged	SEC filing ↗ Feb 11, 2026	▾
07	STATE STREET CORP CIK 93751 · View history	$167.87M 658,174 shares	0.01%	-7.72K(-1.20%)Reduced	SEC filing ↗ Feb 13, 2026	▾
08	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC CIK 861177 · View history	$127.08M 498,252 shares	0.03%	-52.25K(-9.50%)Reduced	SEC filing ↗ Feb 13, 2026	▾
09	Invesco Ltd. CIK 914208 · Amended · View history	$108.45M 425,197 shares	0.01%	+73.79K(+21.00%)Added	SEC filing ↗ Feb 19, 2026	▾
10	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$104.84M 410,963 shares	0.01%	+16.69K(+4.20%)Added	SEC filing ↗ Feb 9, 2026	▾
11	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$103.79M 406,892 shares	0.02%	-12.58K(-3.00%)Reduced	SEC filing ↗ Feb 12, 2026	▾
12	Hood River Capital Management LLC CIK 1578177 · View history	$96.76M 379,374 shares	1.06%	+8.15K(+2.20%)Added	SEC filing ↗ Feb 17, 2026	▾
13	UBS Group AG CIK 1610520 · View history	$80.66M 316,236 shares	0.02%	-98(0.00%)Reduced	SEC filing ↗ Jan 29, 2026	▾
14	NEUBERGER BERMAN GROUP LLC CIK 1465109 · View history	$76.83M 300,792 shares	0.06%	-3.20K(-1.10%)Reduced	SEC filing ↗ Feb 13, 2026	▾
15	BANK OF AMERICA CORP /DE/ CIK 70858 · View history	$73.01M 286,253 shares	0.01%	+10.72K(+3.90%)Added	SEC filing ↗ Feb 17, 2026	▾
16	PRIMECAP MANAGEMENT CO/CA/ CIK 763212 · View history	$68.28M 267,710 shares	0.05%	-38.92K(-12.70%)Reduced	SEC filing ↗ Feb 11, 2026	▾
17	Clark Capital Management Group, Inc. CIK 1352187 · View history	$67.88M 266,114 shares	0.42%	+6.66K(+2.60%)Added	SEC filing ↗ Feb 17, 2026	▾
18	PRICE T ROWE ASSOCIATES INC /MD/ CIK 80255 · View history	$65.06M 255,062 shares	0.01%	+10.14K(+4.10%)Added	SEC filing ↗ Feb 17, 2026	▾
19	Driehaus Capital Management LLC CIK 938206 · View history	$60.13M 235,768 shares	0.41%	+88.71K(+60.30%)Added	SEC filing ↗ Feb 17, 2026	▾
20	SYSTEMATIC FINANCIAL MANAGEMENT LP CIK 1085936 · View history	$59.49M 233,252 shares	1.40%	-23.37K(-9.10%)Reduced	SEC filing ↗ Feb 9, 2026	▾

Showing 20 / 360 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

360

Cancelled or null records excluded

Disclosed shares

18,809,960

Not deduplicated across managers

Disclosed value

$4.80B

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

OSI SYSTEMS INC · Q4 2025

Explore all 360 reporting institutions.

This page includes 20 of 360 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.