Latest Period
Q1 2026
Security Snapshot
OSI SYSTEMS INC - Common Stock (OSIS) Institutional Ownership
CUSIP: 671044105
13F Institutional Holders and Ownership History from Q1 2014 to Q1 2026
Institutions Reporting
356
Shares (Excl. Options)
18,463,438
Price
$265.51
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- Type / Class
- Equity / Common Stock
- Symbol
- OSIS on Nasdaq
- Shares outstanding
- 16,432,213
- Price per share
- $281.84
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 18,463,438
- Total reported value
- $4,899,273,697
- % of total 13F portfolios
- 0%
- Share change
- -31,523
- Value change
- -$7,342,747
- Number of holders
- 356
- Price from insider filings
- $281.84
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors
Quick Takeaways
- OSIS - OSI SYSTEMS INC - Common Stock is tracked under CUSIP 671044105.
- 356 institutions reported positions in Q1 2026.
- 5 significant owners is listed from Schedule 13D/13G reporting.
What Changed
- Holder count moved from 356 to 356 between Q4 2025 and Q1 2026.
- Reported value moved from $4,799,236,003 to $4,899,273,697.
Why This Matters
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Source Evidence
Source: SEC Form 13F
Open SEC Evidence
Latest holder context comes from 356 institutions filings for Q1 2026.
Investment Quick Answers
What is CUSIP 671044105?
CUSIP 671044105 identifies OSIS - OSI SYSTEMS INC - Common Stock in SEC 13F datasets.
Where can I see the latest institutional holders?
Review the Q1 2026 holders report and the ownership history table below.
Next ownership checks
Use the next link that matches the question you still need to answer about this security.
- Latest 13F filings when you want to inspect fresh institutional portfolio moves.
- Latest Schedule 13D/13G reports when you need large-owner changes outside the 13F cycle.
- All institutional ownership pages to compare this security with other holder-history pages.
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 671044105:
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 | 13% | +26% | $620,009,194 | +$113,195,787 | 2,084,415 | +22% | FMR LLC | 31 Mar 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 7.7% | $335,450,910 | 1,263,421 | Vanguard Portfolio Management | 31 Mar 2026 | |||
| Mawer Investment Management Ltd. | 4.7% | -7.2% | $205,384,599 | -$13,489,768 | 803,602 | -6.2% | Mawer Investment Management Ltd. | 31 Dec 2025 |
| JANUS HENDERSON GROUP PLC | 4.7% | -20% | $229,724,799 | -$67,811,759 | 772,314 | -23% | JANUS HENDERSON GROUP PLC | 31 Mar 2026 |
As of 31 Mar 2026, 356 institutional investors reported holding 18,463,438 shares of OSI SYSTEMS INC - Common Stock (OSIS). This represents 112% of the company’s total 16,432,213 outstanding shares.
Top 25 Institutional Shareholders
The largest institutional shareholders of OSI SYSTEMS INC - Common Stock (OSIS) together control 85% 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% | 2,529,623 | -1.3% | 0.01% | $671,640,204 |
| FMR LLC | 12% | 1,967,088 | +19% | 0.03% | $522,281,462 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 7.6% | 1,249,748 | 0% | 0.02% | $331,820,591 |
| JANUS HENDERSON GROUP PLC | 4.7% | 772,314 | +2.6% | 0.1% | $205,056,005 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.3% | 699,253 | 0% | 0% | $185,658,664 |
| Mawer Investment Management Ltd. | 4% | 662,634 | -18% | 1.1% | $175,935,953 |
| STATE STREET CORP | 4% | 662,141 | +0.6% | 0.01% | $175,805,057 |
| Capital International Investors | 3.8% | 619,479 | -8.1% | 0.04% | $164,477,869 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.7% | 440,723 | +7.2% | 0.01% | $117,034,888 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 2.6% | 430,561 | -14% | 0.02% | $114,318,251 |
| DIMENSIONAL FUND ADVISORS LP | 2.4% | 395,428 | -2.8% | 0.02% | $104,992,115 |
| Invesco Ltd. | 2.3% | 373,274 | -12% | 0.02% | $99,107,978 |
| Hood River Capital Management LLC | 2.3% | 372,074 | -1.9% | 0.99% | $98,789,368 |
| NEUBERGER BERMAN GROUP LLC | 1.8% | 303,923 | +1% | 0.06% | $80,683,616 |
| Clark Capital Management Group, Inc. | 1.6% | 270,420 | +1.6% | 0.44% | $71,799,215 |
| Channing Capital Management, LLC | 1.6% | 266,884 | 1.8% | $70,860,371 | |
| PRICE T ROWE ASSOCIATES INC /MD/ | 1.6% | 259,545 | +1.8% | 0.01% | $68,913,000 |
| PRIMECAP MANAGEMENT CO/CA/ | 1.5% | 244,660 | -8.6% | 0.05% | $64,959,677 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 1.4% | 232,497 | +43% | 0.08% | $61,598,225 |
| SYSTEMATIC FINANCIAL MANAGEMENT LP | 1.3% | 219,241 | -6% | 1.3% | $58,211,119 |
| MORGAN STANLEY | 1.3% | 210,377 | -5.6% | 0% | $55,857,567 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.2% | 200,986 | -0.52% | 0.01% | $53,363,793 |
| LOOMIS SAYLES & CO L P | 1.2% | 191,467 | -7.7% | 0.07% | $50,836,404 |
| NEUMEIER POMA INVESTMENT COUNSEL LLC | 1.2% | 191,430 | -2.2% | 4.2% | $50,826,579 |
| VAN ECK ASSOCIATES CORP | 1.1% | 188,180 | -17% | 0.04% | $49,964,000 |
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 |
|---|---|---|---|---|---|
| 2026 Q1 | 18,463,438 | $4,899,273,697 | -$7,342,747 | $265.51 | 356 |
| 2025 Q4 | 18,808,765 | $4,799,236,003 | +$13,254,552 | $255.06 | 356 |
| 2025 Q3 | 18,695,472 | $4,658,561,250 | +$10,949,794 | $249.24 | 345 |
| 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 |