OSI SYSTEMS INC - COMMON STOCK (OSIS) Institutional Ownership

13F Institutional Holders and Ownership History from Q1 2014 to Q4 2025

Type / Class
Equity / COMMON STOCK
Symbol
OSIS on Nasdaq
Shares outstanding
17,038,605
Price per share
$255.06
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares
18,695,023
Total reported value
$4,658,449,025
% of total 13F portfolios
0%
Share change
-5,900
Value change
+$8,942,360
Number of holders
343
Price from insider filings
$255.06
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of OSI SYSTEMS INC - COMMON STOCK (OSIS) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
BlackRock, Inc. 14% $542,467,058 2,389,828 BlackRock, Inc. 30 Jun 2025
FMR LLC 10% +39% $434,587,669 +$119,508,389 1,703,860 +38% FMR LLC 31 Dec 2025
JANUS HENDERSON GROUP PLC 5.9% -6.7% $249,312,529 -$13,068,899 1,000,291 -5% JANUS HENDERSON GROUP PLC 30 Sep 2025
Mawer Investment Management Ltd. 5.1% $213,444,899 856,383 Mawer Investment Management Ltd. 30 Sep 2025

As of 30 Sep 2025, 343 institutional investors reported holding 18,695,023 shares of OSI SYSTEMS INC - COMMON STOCK (OSIS). This represents 110% of the company’s total 17,038,605 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of OSI SYSTEMS INC - COMMON STOCK (OSIS) together control 84% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
BlackRock, Inc. 15% 2,504,256 -0.02% 0.01% $624,160,764
VANGUARD GROUP INC 12% 2,107,576 -0.23% 0.01% $525,292,242
FMR LLC 6.4% 1,090,269 -8.4% 0.01% $271,738,695
JANUS HENDERSON GROUP PLC 5.9% 1,000,291 -5% 0.11% $249,312,634
Mawer Investment Management Ltd. 5% 856,383 +67% 1.1% $213,444,899
Capital International Investors 4% 674,343 0% 0.03% $168,073,249
STATE STREET CORP 3.9% 665,892 -0.06% 0.01% $165,966,922
UBS AM, A DISTINCT BUSINESS UNIT OF UBS ASSET MANAGEMENT AMERICAS LLC 3.2% 550,503 -4.4% 0.03% $137,207,367
DIMENSIONAL FUND ADVISORS LP 2.5% 419,469 -6.7% 0.02% $104,534,628
GEODE CAPITAL MANAGEMENT, LLC 2.3% 394,271 +3.4% 0.01% $98,281,462
Hood River Capital Management LLC 2.2% 371,228 -1.5% 1.1% $92,524,867
Invesco Ltd. 2.1% 351,410 +10% 0.01% $87,585,428
UBS Group AG 1.9% 316,334 +64% 0.02% $78,843,086
PRIMECAP MANAGEMENT CO/CA/ 1.8% 306,630 -4.6% 0.06% $76,424,461
NEUBERGER BERMAN GROUP LLC 1.8% 303,995 -1.3% 0.06% $75,606,508
BANK OF AMERICA CORP /DE/ 1.6% 275,530 -13% 0.01% $68,673,098
MORGAN STANLEY 1.5% 261,590 +19% 0% $65,199,147
Clark Capital Management Group, Inc. 1.5% 259,451 +3.3% 0.41% $64,665,567
SYSTEMATIC FINANCIAL MANAGEMENT LP 1.5% 256,622 -2.3% 1.6% $63,960,905
PRICE T ROWE ASSOCIATES INC /MD/ 1.4% 244,918 +353% 0.01% $61,045,000
Clearbridge Investments, LLC 1.4% 244,645 -4.2% 0.05% $60,975,267
LOOMIS SAYLES & CO L P 1.3% 217,206 +68% 0.06% $54,136,424
BROWN ADVISORY INC 1.2% 210,309 -3% 0.07% $52,417,320
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 1.2% 209,997 -2% 0.01% $52,339,652
MACQUARIE GROUP LTD 1.2% 209,220 -3.7% 0.06% $52,146,000

Institutional Holders of OSI SYSTEMS INC - COMMON STOCK (OSIS) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 169,542 $43,726,662 -$217,383 $255.06 28
2025 Q3 18,695,023 $4,658,449,025 +$8,942,360 $249.24 343
2025 Q2 18,689,354 $4,200,189,299 -$159,319,087 $224.86 337
2025 Q1 19,457,200 $3,779,182,969 +$272,671,454 $194.34 304
2024 Q4 18,043,144 $3,020,701,003 +$283,252,118 $167.43 298
2024 Q3 16,369,791 $2,483,762,949 +$143,819,538 $151.83 269
2024 Q2 15,384,249 $2,116,045,471 +$93,503,811 $137.52 262
2024 Q1 15,053,484 $2,149,473,204 -$9,094,535 $142.82 245
2023 Q4 349,265 $45,097,545 -$455,966 $129.05 3
2023 Q3 14,863,860 $1,754,112,102 -$10,008,579 $118.04 231
2023 Q2 14,915,497 $1,757,298,510 -$59,945,283 $117.83 203
2023 Q1 14,608,573 $1,495,923,389 -$28,257,589 $102.36 177
2022 Q4 15,297,497 $1,217,435,844 +$12,234,379 $79.52 183
2022 Q3 14,779,696 $1,065,266,072 -$33,150,318 $72.06 175
2022 Q2 14,882,321 $1,271,560,252 -$33,395,555 $85.44 176
2022 Q1 15,875,028 $1,351,246,330 -$53,267,415 $85.12 176
2021 Q4 15,966,249 $1,487,590,064 -$39,606,572 $93.20 184
2021 Q3 16,840,058 $1,596,180,639 -$36,495,345 $94.80 184
2021 Q2 17,030,097 $1,730,377,619 +$18,631,255 $101.64 183
2021 Q1 16,909,695 $1,624,953,231 -$620,173 $96.10 187
2020 Q4 16,496,746 $1,537,764,398 +$8,853,885 $93.22 180
2020 Q3 16,926,391 $1,313,224,781 -$17,707,786 $77.61 178
2020 Q2 17,147,500 $1,279,289,922 -$29,244,513 $74.64 181
2020 Q1 17,541,046 $1,208,855,580 -$63,372,237 $68.92 181
2019 Q4 18,083,313 $1,820,631,476 -$4,150,723 $100.74 214
2019 Q3 18,000,133 $1,827,191,158 -$25,239,098 $101.56 232
2019 Q2 17,911,385 $2,015,809,074 +$132,956,699 $112.63 215
2019 Q1 17,790,556 $1,558,176,288 -$20,236,950 $87.60 197
2018 Q4 17,983,474 $1,318,077,761 -$13,367,817 $73.30 165
2018 Q3 18,148,943 $1,384,683,403 +$4,304,222 $76.31 171
2018 Q2 17,899,526 $1,383,900,850 -$20,953,473 $77.33 165
2018 Q1 18,712,778 $1,221,431,378 -$46,318,037 $65.27 170
2017 Q4 19,473,996 $1,253,693,786 -$42,177,957 $64.38 196
2017 Q3 19,349,974 $1,767,860,523 +$38,970,261 $91.37 187
2017 Q2 18,468,530 $1,387,747,568 +$67,212,587 $75.15 189
2017 Q1 19,379,881 $1,414,425,344 +$153,773,020 $72.99 179
2016 Q4 19,003,955 $1,446,173,940 +$52,452,003 $76.12 175
2016 Q3 18,637,918 $1,216,901,096 +$27,127,702 $65.38 173
2016 Q2 17,634,465 $1,025,016,069 -$50,446,855 $58.13 165
2016 Q1 18,712,481 $1,225,657,529 -$28,409,004 $65.49 162
2015 Q4 18,510,375 $1,640,880,206 +$122,426 $88.66 199
2015 Q3 18,502,460 $1,423,854,029 +$121,276 $76.96 175
2015 Q2 18,181,933 $1,287,028,061 +$43,507,933 $70.79 167
2015 Q1 17,233,495 $1,279,525,822 -$1,996,386 $74.26 184
2014 Q4 17,817,820 $1,261,150,641 -$14,512,845 $70.77 179
2014 Q3 17,990,023 $1,142,003,842 +$1,992,255 $63.48 166
2014 Q2 17,893,073 $1,194,260,453 -$6,636,223 $66.75 157
2014 Q1 18,158,858 $1,086,771,743 +$57,376,914 $59.86 159