OSI Systems, Inc.

Historical 13F Holders

Symbol
OSIS
CUSIP
671044105
All holders as of
Q2 2026
Type
Equity
Class
COM
Reported Value, Excluding Options
Total Filings

13D/G Filers

Investors who own more than 5% of a class must file a Schedule 13D or 13G. Each filer's latest filing for 671044105 since 12/18/2024, largest first.

Filer % of Class Filed
BlackRock, Inc. 13G/A 14.2% 7/18/2025
Event 6/30/2025
FMR LLC 13G/A
10.8% 8/6/2026
Event 6/30/2026
Vanguard Portfolio Management LLC 13G 7.7% 4/29/2026
Event 3/31/2026
Janus Henderson Group Ltd. 13G 5.5% 8/13/2026
Event 6/30/2026
Vanguard Capital Management LLC 13G 5.0% 7/31/2026
Event 6/30/2026
Under 5%, checked the "5 percent or less" box, or amended by a later filing (2)
Mawer Investment Management Ltd. 13G/A 4.7% 2/11/2026
Event 12/31/2025
Vanguard Group Inc 13G/A 0% 3/27/2026
Event 3/13/2026

13F Holders by Quarter

Period Filings Shares, Excl. Options Value, Excl. Options
2026 Q3 6 10.3 k $2.01 M
2026 Q2 381 23.0 M $4.17 B
2026 Q1 384 18.9 M $5.00 B
2025 Q4 371 18.8 M $4.80 B
2025 Q3 364 18.8 M $4.69 B
2025 Q2 366 18.8 M $4.22 B
2025 Q1 338 19.5 M $3.79 B
2024 Q4 328 18.1 M $3.03 B
2024 Q3 287 16.6 M $2.52 B
2024 Q2 281 15.8 M $2.18 B
2024 Q1 263 15.7 M $2.25 B
2023 Q4 241 15.8 M $2.04 B
2023 Q3 250 15.1 M $1.79 B
2023 Q2 217 15.2 M $1.79 B
2023 Q1 193 15.6 M $1.55 B
2022 Q4 200 16.0 M $1.28 B
2022 Q3 192 17.0 M $1.22 B
2022 Q2 194 15.6 M $1.33 B
2022 Q1 191 16.0 M $1.37 B
2021 Q4 201 16.6 M $1.55 B
2021 Q3 199 17.0 M $1.61 B
2021 Q2 201 17.4 M $1.77 B
2021 Q1 206 17.1 M $1.64 B
2020 Q4 203 17.9 M $1.67 B
2020 Q3 205 17.0 M $1.32 B
2020 Q2 210 17.2 M $1.29 B
2020 Q1 206 17.7 M $1.22 B
2019 Q4 236 18.4 M $1.85 B
2019 Q3 253 18.2 M $1.85 B
2019 Q2 242 18.4 M $2.07 B
2019 Q1 218 18.0 M $1.57 B
2018 Q4 183 18.2 M $1.34 B
2018 Q3 195 19.0 M $1.45 B
2018 Q2 186 18.2 M $1.41 B
2018 Q1 191 18.8 M $1.23 B
2017 Q4 221 19.5 M $1.26 B
2017 Q3 210 19.4 M $1.77 B
2017 Q2 208 19.0 M $1.43 B
2017 Q1 198 19.6 M $1.43 B
2016 Q4 199 19.5 M $1.48 B
2016 Q3 192 18.6 M $1.22 B
2016 Q2 186 18.0 M $1.05 B
2016 Q1 181 18.8 M $1.23 B
2015 Q4 226 18.9 M $1.68 B
2015 Q3 191 20.2 M $1.56 B
2015 Q2 182 18.5 M $1.31 B
2015 Q1 200 17.9 M $1.33 B
2014 Q4 194 18.1 M $1.28 B
2014 Q3 177 18.1 M $1.15 B
2014 Q2 170 18.3 M $1.22 B
2014 Q1 172 18.4 M $1.10 B