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
+$8,942,364
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% $537,376,724 2,389,828 BlackRock, Inc. 30 Jun 2025
FMR LLC 10% +39% $434,630,776 +$119,520,243 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 111,075 $28,804,587 -$2,102,192 $255.06 18
2025 Q3 18,695,023 $4,658,449,025 +$8,942,364 $249.24 343
2025 Q2 18,689,354 $4,200,189,299 -$159,319,080 $224.86 337
2025 Q1 19,470,051 $3,781,680,121 +$272,650,652 $194.34 306
2024 Q4 18,050,418 $3,021,926,083 +$271,642,509 $167.43 300
2024 Q3 16,442,167 $2,494,751,950 +$153,277,128 $151.83 271
2024 Q2 15,388,625 $2,116,646,888 +$78,778,036 $137.52 264
2024 Q1 15,161,521 $2,164,902,587 -$3,031,012 $142.82 247
2023 Q4 15,196,031 $1,961,204,420 +$30,223,863 $129.05 225
2023 Q3 14,995,454 $1,769,645,354 -$8,152,605 $118.04 234
2023 Q2 15,053,317 $1,773,537,607 +$5,185,476 $117.83 207
2023 Q1 15,018,948 $1,537,929,075 -$22,653,459 $102.36 179
2022 Q4 15,307,854 $1,218,259,274 +$12,488,077 $79.52 186
2022 Q3 15,180,060 $1,094,118,619 -$32,043,942 $72.06 178
2022 Q2 15,555,990 $1,329,118,252 -$28,934,397 $85.44 179
2022 Q1 15,992,182 $1,361,219,330 -$55,039,518 $85.12 180
2021 Q4 16,606,910 $1,547,299,064 -$45,448,996 $93.20 186
2021 Q3 16,993,040 $1,610,685,639 -$28,683,627 $94.80 185
2021 Q2 17,297,443 $1,757,698,619 +$26,327,154 $101.64 184
2021 Q1 17,057,537 $1,639,241,231 +$5,209,680 $96.10 191
2020 Q4 16,994,249 $1,584,140,398 +$14,674,825 $93.22 183
2020 Q3 16,926,937 $1,313,266,781 -$17,757,416 $77.61 179
2020 Q2 17,148,117 $1,279,335,922 -$28,715,492 $74.64 182
2020 Q1 17,541,814 $1,208,909,580 -$64,400,041 $68.92 184
2019 Q4 18,084,164 $1,820,715,476 -$4,150,225 $100.74 217
2019 Q3 18,091,030 $1,836,421,158 -$27,443,978 $101.56 234
2019 Q2 18,281,910 $2,057,541,074 +$99,688,931 $112.63 217
2019 Q1 17,791,678 $1,558,272,288 -$19,437,702 $87.60 200
2018 Q4 17,983,739 $1,318,096,761 -$13,345,704 $73.30 166
2018 Q3 18,165,843 $1,385,878,403 +$4,196,913 $76.31 174
2018 Q2 18,114,534 $1,400,527,850 -$42,014,486 $77.33 169
2018 Q1 18,713,123 $1,221,481,349 -$46,309,281 $65.27 172
2017 Q4 19,474,177 $1,253,850,641 -$42,176,979 $64.38 197
2017 Q3 19,405,846 $1,772,211,523 +$39,355,973 $91.37 191
2017 Q2 19,042,842 $1,430,986,568 +$84,542,283 $75.15 192
2017 Q1 19,380,274 $1,414,453,344 +$153,782,836 $72.99 181
2016 Q4 19,319,559 $1,470,197,940 +$53,560,786 $76.12 179
2016 Q3 18,638,256 $1,216,923,096 +$27,047,587 $65.38 174
2016 Q2 17,931,369 $1,042,275,069 -$55,275,583 $58.13 166
2016 Q1 18,776,050 $1,229,820,529 -$24,851,526 $65.49 164
2015 Q4 18,565,015 $1,645,725,206 +$927,044 $88.66 202
2015 Q3 18,556,453 $1,428,009,029 +$1,325,963 $76.96 176
2015 Q2 18,477,971 $1,307,984,061 +$39,463,772 $70.79 170
2015 Q1 17,877,412 $1,327,342,822 +$3,163,445 $74.26 186
2014 Q4 17,887,305 $1,266,067,641 -$17,368,519 $70.77 178
2014 Q3 18,101,870 $1,149,102,842 +$8,182,354 $63.48 169
2014 Q2 17,905,293 $1,195,076,453 -$6,097,674 $66.75 158
2014 Q1 18,165,869 $1,087,191,743 +$62,573,968 $59.86 160