HAWTHORNE, CA
OSI SYSTEMS INCOSIS— Latest position per institution from SEC 13F filings
15
Institutional holders
21.83M
Total shares held
3.81B
Estimated value
1.09M
Avg. position size
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM
CIK 1081019
Shares
3.97M
Value
18.14K
Filed
Jun 30, 2026
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
2.61M
Value
358.80M
Filed
Jun 30, 2024
BLACKROCK, INC.
CIK 2012383
Shares
2.55M
Value
558.13M
Filed
Jun 30, 2026
VANGUARD GROUP INC
CIK 102909
Shares
2.11M
Value
537.31M
Filed
Dec 31, 2025
FMR LLC
CIK 315066
Shares
1.74M
Value
380.14M
Filed
Jun 30, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC
CIK 2100121
Shares
1.27M
Value
278.19M
Filed
Jun 30, 2026
JUPITER TOPCO LLC
CIK 2146052
Shares
905.92K
Value
198.13M
Filed
Jun 30, 2026
JANUS HENDERSON GROUP LTD.
CIK 1274173
Shares
772.31K
Value
205.06M
Filed
Mar 31, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
703.07K
Value
153.76M
Filed
Jun 30, 2026
STATE STREET CORP
CIK 93751
Shares
674.05K
Value
147.42M
Filed
Jun 30, 2026
MAWER INVESTMENT MANAGEMENT LTD.
CIK 1538449
Shares
662.63K
Value
175.94M
Filed
Mar 31, 2026
CAPITAL INTERNATIONAL INVESTORS
CIK 1562230
Shares
596.33K
Value
130.42M
Filed
Jun 30, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
463.79K
Value
101.45M
Filed
Jun 30, 2026
UBS AM, A DISTINCT BUSINESS UNIT OF UBS ASSET MANAGEMENT AMERICAS LLC
CIK 861177
Shares
452.55K
Value
98.97M
Filed
Jun 30, 2026
CHANNING CAPITAL MANAGEMENT, LLC
CIK 1302404
Shares
432.85K
Value
94.66M
Filed
Jun 30, 2026
HOOD RIVER CAPITAL MANAGEMENT LLC
CIK 1578177
Shares
414.30K
Value
90.61M
Filed
Jun 30, 2026
DIMENSIONAL FUND ADVISORS LP
CIK 354204
Shares
414.03K
Value
90.54M
Filed
Jun 30, 2026
CREDIT SUISSE AG/
CIK 824468
Shares
385.34K
Value
55.03M
Filed
Mar 31, 2024
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
CIK 1644956
Shares
379.35K
Value
82.96M
Filed
Jun 30, 2026
NEUBERGER BERMAN GROUP LLC
CIK 1465109
Shares
324.71K
Value
70.86M
Filed
Jun 30, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | 1081019 | 3.97M | 18.14K | Jun 30, 2026 |
| 2 | BLACKROCK FINANCE, INC. | 1364742 | 2.61M | 358.80M | Jun 30, 2024 |
| 3 | BLACKROCK, INC. | 2012383 | 2.55M | 558.13M | Jun 30, 2026 |
| 4 | VANGUARD GROUP INC | 102909 | 2.11M | 537.31M | Dec 31, 2025 |
| 5 | FMR LLC | 315066 | 1.74M | 380.14M | Jun 30, 2026 |
| 6 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | 1.27M | 278.19M | Jun 30, 2026 |
| 7 | JUPITER TOPCO LLC | 2146052 | 905.92K | 198.13M | Jun 30, 2026 |
| 8 | JANUS HENDERSON GROUP LTD. | 1274173 | 772.31K | 205.06M | Mar 31, 2026 |
| 9 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 703.07K | 153.76M | Jun 30, 2026 |
| 10 | STATE STREET CORP | 93751 | 674.05K | 147.42M | Jun 30, 2026 |
| 11 | MAWER INVESTMENT MANAGEMENT LTD. | 1538449 | 662.63K | 175.94M | Mar 31, 2026 |
| 12 | CAPITAL INTERNATIONAL INVESTORS | 1562230 | 596.33K | 130.42M | Jun 30, 2026 |
| 13 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 463.79K | 101.45M | Jun 30, 2026 |
| 14 | UBS AM, A DISTINCT BUSINESS UNIT OF UBS ASSET MANAGEMENT AMERICAS LLC | 861177 | 452.55K | 98.97M | Jun 30, 2026 |
| 15 | CHANNING CAPITAL MANAGEMENT, LLC | 1302404 | 432.85K | 94.66M | Jun 30, 2026 |
| 16 | HOOD RIVER CAPITAL MANAGEMENT LLC | 1578177 | 414.30K | 90.61M | Jun 30, 2026 |
| 17 | DIMENSIONAL FUND ADVISORS LP | 354204 | 414.03K | 90.54M | Jun 30, 2026 |
| 18 | CREDIT SUISSE AG/ | 824468 | 385.34K | 55.03M | Mar 31, 2024 |
| 19 | WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 1644956 | 379.35K | 82.96M | Jun 30, 2026 |
| 20 | NEUBERGER BERMAN GROUP LLC | 1465109 | 324.71K | 70.86M | Jun 30, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.