Security key
671044105
- Type / Class
- Equity / Common Stock
- Shares outstanding
- 16,432,213
- Total 13F shares
- 18,848,824
- Share change
- +11,605
- Total reported value
- $5,001,608,308
- Put/Call ratio
- 342%
- Price per share
- $265.51
- Number of holders
- 367
- Value change
- +$4,147,731
- Number of buys
- 162
- Number of sells
- 177
Report period
Q1 2026
Institutions
367
Top holders
10
OSIS full security history
Previous quarter: Q4 2025
OSI SYSTEMS INC SEC filings
OSI SYSTEMS INC company facts
Broader feeds
Reporting periods
Holder history for CUSIP 671044105
Recent filing periods:
Top shareholders of OSIS - OSI SYSTEMS INC - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
|
Company |
14%
from 13D/G
|
2,561,902
|
$653,438,725 | — | 31 Dec 2025 | |
| FMR LLC |
13D/G
13F
|
Company |
13%
|
2,084,415
|
$620,009,194 | +$113,195,787 | 31 Mar 2026 | |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13D/G
|
Vanguard Portfolio Management |
7.7%
|
1,263,421
|
$335,450,910 | $0 | 31 Mar 2026 | |
| Mawer Investment Management Ltd. |
13D/G
13F
|
Company |
4.7%
|
803,602
|
$205,384,599 | -$13,489,768 | 31 Dec 2025 | |
| JANUS HENDERSON GROUP PLC |
13D/G
13F
|
Company |
4.7%
|
772,314
|
$229,724,799 | -$67,811,759 | 31 Mar 2026 | |
| Alan I. Edrick |
3/4/5
|
EVP & CFO |
1.8%
|
295,455
|
$41,543,927 | — | 31 Dec 2025 | |
| Ajay Mehra |
3/4/5
|
PRESIDENT AND CEO, Director |
0.62%
|
101,865
|
$14,811,529 | — | 31 Dec 2025 | |
| Victor S. Sze |
3/4/5
|
GENERAL COUNSEL |
0.56%
|
92,637
|
$13,740,028 | — | 31 Dec 2025 | |
| William Francis Ballhaus Jr. |
3/4/5
|
Director |
0.17%
|
28,551
|
$7,116,051 | -$133,666 | 04 Nov 2025 | |
| Meyer Luskin |
3/4/5
|
Director |
0.1%
|
16,271
|
$3,600,375 | -$237,150 | 20 Aug 2025 | |
| Kelli Bernard |
3/4/5
|
Director |
0.06%
|
10,412
|
$2,325,936 | — | 20 Aug 2025 | |
| Gerald M. Chizever |
3/4/5
|
Director |
0.06%
|
10,149
|
$2,235,114 | — | 20 Aug 2025 | |
| Glenn Grindstaff |
3/4/5
|
CHIEF HUMAN RESOURCES OFFICER |
0.06%
|
9,305
|
$2,095,392 | — | 26 Aug 2025 | |
| Paul Keith Morben |
3/4/5
|
PRES., OPTOELECTRONICS DIV |
0.05%
|
8,615
|
$1,211,355 | -$511,732 | 31 Dec 2025 | |
| James B. Hawkins |
3/4/5
|
Director |
0.03%
|
5,021
|
$1,302,648 | -$424,725 | 13 Dec 2025 | |
| Michael Tropeano |
3/4/5
|
PRESIDENT, RAPISCAN SYSTEMS |
0.02%
|
3,512
|
$493,822 | — | 31 Dec 2025 | |
| Cary M. Okawa |
3/4/5
|
CHIEF ACCOUNTING OFFICER |
0.02%
|
3,314
|
$363,247 | — | 31 Dec 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
13%
|
2,106,595
|
$537,308,121 | — | 31 Dec 2025 | |
| Capital International Investors |
13F
|
Company |
4.1%
|
674,343
|
$171,997,926 | — | 31 Dec 2025 | |
| STATE STREET CORP |
13F
|
Company |
4%
|
658,174
|
$167,873,860 | — | 31 Dec 2025 | |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC |
13F
|
Company |
3%
|
498,252
|
$127,084,154 | — | 31 Dec 2025 | |
| Invesco Ltd. |
13F
|
Company |
2.6%
|
425,197
|
$108,450,747 | — | 31 Dec 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
2.5%
|
410,963
|
$104,836,009 | — | 31 Dec 2025 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
2.5%
|
406,892
|
$103,790,223 | — | 31 Dec 2025 | |
| Hood River Capital Management LLC |
13F
|
Company |
2.3%
|
379,374
|
$96,763,132 | — | 31 Dec 2025 | |
| UBS Group AG |
13F
|
Company |
1.9%
|
316,236
|
$80,659,154 | — | 31 Dec 2025 | |
| Neuberger Berman Group LLC |
13F
|
Company |
1.8%
|
300,792
|
$76,834,304 | — | 31 Dec 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
1.7%
|
286,253
|
$73,011,690 | — | 31 Dec 2025 | |
| PRIMECAP MANAGEMENT CO/CA/ |
13F
|
Company |
1.6%
|
267,710
|
$68,282,113 | — | 31 Dec 2025 | |
| Clark Capital Management Group, Inc. |
13F
|
Company |
1.6%
|
266,114
|
$67,875,037 | — | 31 Dec 2025 | |
| PRICE T ROWE ASSOCIATES INC /MD/ |
13F
|
Company |
1.6%
|
255,062
|
$65,057,000 | — | 31 Dec 2025 | |
| DRIEHAUS CAPITAL MANAGEMENT LLC |
13F
|
Company |
1.4%
|
235,768
|
$60,134,986 | — | 31 Dec 2025 | |
| SYSTEMATIC FINANCIAL MANAGEMENT LP |
13F
|
Company |
1.4%
|
233,252
|
$59,493,654 | — | 31 Dec 2025 | |
| VAN ECK ASSOCIATES CORP |
13F
|
Company |
1.4%
|
227,095
|
$57,923,000 | — | 31 Dec 2025 | |
| MORGAN STANLEY |
13F
|
Company |
1.4%
|
222,904
|
$56,854,001 | — | 31 Dec 2025 | |
| LOOMIS SAYLES & CO L P |
13F
|
Company |
1.3%
|
207,446
|
$52,911,177 | — | 31 Dec 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
1.2%
|
202,033
|
$51,530,537 | — | 31 Dec 2025 | |
| NEUMEIER POMA INVESTMENT COUNSEL LLC |
13F
|
Company |
1.2%
|
195,795
|
$49,939,473 | — | 31 Dec 2025 | |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC |
13F
|
Company |
1.2%
|
191,326
|
$48,799,610 | — | 31 Dec 2025 | |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. |
13F
|
Company |
1.1%
|
188,970
|
$48,199,000 | — | 31 Dec 2025 | |
| Clearbridge Investments, LLC |
13F
|
Company |
1.1%
|
185,146
|
$47,223,377 | — | 31 Dec 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
1%
|
171,308
|
$43,693,819 | — | 31 Dec 2025 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
1%
|
165,009
|
$42,087,196 | — | 31 Dec 2025 | |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. |
13F
|
Company |
0.99%
|
163,104
|
$41,501,172 | — | 31 Dec 2025 | |
| BROWN ADVISORY INC |
13F
|
Company |
0.92%
|
151,605
|
$38,668,316 | — | 31 Dec 2025 | |
| Swedbank AB |
13F
|
Company |
0.67%
|
110,413
|
$28,161,940 | — | 31 Dec 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
0.66%
|
108,377
|
$27,642,638 | — | 31 Dec 2025 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.63%
|
102,924
|
$26,251,857 | — | 31 Dec 2025 | |
| OBERWEIS ASSET MANAGEMENT INC/ |
13F
|
Company |
0.62%
|
101,400
|
$25,863,084 | — | 31 Dec 2025 | |
| ENVESTNET ASSET MANAGEMENT INC |
13F
|
Company |
0.58%
|
96,041
|
$24,496,264 | — | 31 Dec 2025 |
Institutional Holders of OSI SYSTEMS INC - Common Stock (OSIS) as of Q1 2026
As of 31 Mar 2026,
OSI SYSTEMS INC - Common Stock (OSIS) was held by
367 institutional
shareholders
that filed Form 13F with the SEC.
Together, they reported ownership of
18,848,824 shares.
The largest 10 holders included
BlackRock, Inc., FMR LLC, VANGUARD PORTFOLIO MANAGEMENT LLC, JANUS HENDERSON GROUP PLC, VANGUARD CAPITAL MANAGEMENT LLC, Mawer Investment Management Ltd., STATE STREET CORP, Capital International Investors, GEODE CAPITAL MANAGEMENT, LLC, and UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC.
This page lists
367
institutional shareholders reporting positions in this security
for the Q1 2026 filing period.
| Investor | Option | Weight % | Change % | Value $ | * Price | Shares | Share Change | Activity | Report Period |
|---|
Compare Q1 2026 vs Q4 2025 Across Filers
Q4 2025 holders
358
Q1 2026 holders
367
Holder diff
9
| Investor | Q4 2025 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q4 2025 Value $ | Q1 2026 Value $ | Value Diff $ | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.
An asterisk sign (*) next to the price indicates that the price is likely invalid.