DaveManuel.com · Institutional Ownership · Who Owns It
OSI SYSTEMS INC (OSIS)
Institutional ownership reported to the SEC as of Q2 2026, across 32 quarters.
374
Reporting holders
$4.2B
Reported value
0.5%
Calls
0.4%
Puts
+2
Holder change
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $558.1M | 2,552,027 | 0.01% | 8q | +0.9%+$4.9M |
| FMR LLC | $380.1M | 1,738,166 | 0.02% | 31q | -11.6%-$50.1M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $278.2M | 1,272,016 | 0.01% | 2q | +1.8%+$4.9M |
| Jupiter Topco LLC | $198.1M | 905,925 | 0.08% | new | FIRST |
| VANGUARD CAPITAL MANAGEMENT LLC | $153.8M | 703,070 | 0.00% | 2q | +0.5%+$834.8K |
| STATE STREET CORP | $147.4M | 674,053 | 0.00% | 31q | +1.8%+$2.6M |
| Capital International Investors | $130.4M | 596,331 | 0.03% | 7q | -3.7%-$5.1M |
| GEODE CAPITAL MANAGEMENT, LLC | $101.4M | 463,787 | 0.01% | 31q | +5.2%+$5.0M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $99.0M | 452,547 | 0.02% | 31q | +5.1%+$4.8M |
| Channing Capital Management, LLC | $94.7M | 432,851 | 2.18% | 2q | +62.2%+$36.3M |
| Hood River Capital Management LLC | $90.6M | 414,304 | 0.66% | 13q | +11.3%+$9.2M |
| DIMENSIONAL FUND ADVISORS LP | $90.5M | 414,034 | 0.02% | 31q | +4.7%+$4.1M |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | $83.0M | 379,351 | 0.25% | 3q | +121.0%+$45.4M |
| NEUBERGER BERMAN GROUP LLC | $70.9M | 324,715 | 0.05% | 31q | +6.8%+$4.5M |
| PRICE T ROWE ASSOCIATES INC /MD/ | $68.8M | 314,717 | 0.01% | 31q | +21.3%+$12.1M |
| MILLENNIUM MANAGEMENT LLC | $65.3M | 298,480 | 0.02% | 5q | +584.4%+$55.7M |
| Invesco Ltd. | $57.6M | 263,207 | 0.00% | 31q | -29.5%-$24.1M |
| PRIMECAP MANAGEMENT CO/CA/ | $56.5M | 258,180 | 0.03% | 31q | +5.5%+$3.0M |
| AMERICAN CENTURY COMPANIES INC | $48.8M | 223,142 | 0.02% | 7q | +337.6%+$37.6M |
| NEUMEIER POMA INVESTMENT COUNSEL LLC | $48.7M | 222,515 | 3.33% | 31q | +16.2%+$6.8M |
| Clark Capital Management Group, Inc. | $47.9M | 218,913 | 0.26% | 11q | -19.0%-$11.3M |
| SYSTEMATIC FINANCIAL MANAGEMENT LP | $47.3M | 216,098 | 0.94% | 31q | -1.4%-$687.4K |
| UBS Group AG | $46.1M | 210,866 | 0.01% | 31q | +55.1%+$16.4M |
| VAN ECK ASSOCIATES CORP | $43.7M | 199,636 | 0.03% | 14q | +6.1%+$2.5M |
| MORGAN STANLEY | $43.3M | 197,990 | 0.00% | 35q | -5.9%-$2.7M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $42.4M | 193,801 | 0.01% | 31q | -3.6%-$1.6M |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $41.9M | 192,062 | 0.05% | 4q | -17.4%-$8.8M |
| JPMORGAN CHASE & CO | $40.6M | 189,751 | 0.00% | 31q | +9.8%+$3.6M |
| AMERIPRISE FINANCIAL INC | $40.5M | 185,377 | 0.01% | 31q | +97.0%+$20.0M |
| NORTHERN TRUST CORP | $39.7M | 181,359 | 0.00% | 31q | +6.1%+$2.3M |
| WELLINGTON MANAGEMENT GROUP LLP | $38.8M | 177,616 | 0.01% | 3q | +89.4%+$18.3M |
| BANK OF AMERICA CORP /DE/ | $30.0M | 137,340 | 0.00% | 31q | -48.4%-$28.2M |
| Clearbridge Investments, LLC | $29.6M | 135,261 | 0.02% | 31q | -17.3%-$6.2M |
| VOYA INVESTMENT MANAGEMENT LLC | $27.4M | 125,194 | 0.02% | 31q | +1276.4%+$25.4M |
| GOLDMAN SACHS GROUP INC | $26.2M | 119,675 | 0.00% | 31q | +59.3%+$9.7M |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | $25.5M | 116,736 | 0.04% | 3q | -27.7%-$9.8M |
| Swedbank AB | $25.4M | 116,150 | 0.02% | 6q | -1.4%-$347.7K |
| VANGUARD FIDUCIARY TRUST CO | $24.4M | 111,720 | 0.01% | 2q | +3.8%+$889.7K |
| NEW YORK STATE COMMON RETIREMENT FUND | $23.8M | 108,672 | 0.03% | 31q | +52.0%+$8.1M |
| OBERWEIS ASSET MANAGEMENT INC/ | $23.4M | 107,143 | 0.48% | 12q | +0.5%+$120.3K |
| PRINCIPAL FINANCIAL GROUP INC | $23.1M | 105,574 | 0.01% | 31q | +3.1%+$690.4K |
| ENVESTNET ASSET MANAGEMENT INC | $22.9M | 104,535 | 0.01% | 19q | +4.1%+$909.4K |
| First Eagle Investment Management, LLC | $22.8M | 104,324 | 0.02% | 7q | +323.0%+$17.4M |
| T. Rowe Price Investment Management, Inc. | $22.2M | 101,616 | 0.01% | new | NEW |
| Bank of New York Mellon Corp | $22.0M | 100,379 | 0.00% | 31q | +2.3%+$484.9K |
| BROWN ADVISORY INC | $19.0M | 86,852 | 0.03% | 7q | +11.0%+$1.9M |
| Boston Partners | $17.8M | 82,102 | 0.02% | 15q | -5.1%-$961.6K |
| BNP PARIBAS FINANCIAL MARKETS | $17.5M | 80,052 | 0.01% | 31q | -18.2%-$3.9M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $16.2M incl. $15.8M options CALL+PUT | 1,956 | 0.00% | 31q | -71.3%-$40.4M |
| Asset Management One Co., Ltd. | $13.7M | 62,754 | 0.04% | 31q | -24.7%-$4.5M |
| Nuveen, LLC | $13.1M | 59,977 | 0.00% | 6q | HELD |
| WELLS FARGO & COMPANY/MN | $13.0M | 59,655 | 0.00% | 31q | +17.5%+$1.9M |
| Prospect Capital Advisors, LLC | $12.6M | 57,640 | 5.72% | 31q | +16.5%+$1.8M |
| Public Sector Pension Investment Board | $11.6M | 53,240 | 0.03% | 31q | -3.9%-$468.9K |
| SEGALL BRYANT & HAMILL, LLC | $10.7M | 48,751 | 0.13% | 2q | +1.8%+$184.1K |
| MIROVA | $10.1M | 46,000 | 0.37% | 2q | -29.2%-$4.2M |
| NORDEA INVESTMENT MANAGEMENT AB | $9.5M | 43,518 | 0.01% | 26q | -4.9%-$486.2K |
| FIRST TRUST ADVISORS LP | $9.2M | 42,085 | 0.01% | 29q | +6.2%+$540.8K |
| RHUMBLINE ADVISERS | $8.4M | 38,359 | 0.01% | 31q | -10.9%-$1.0M |
| Legal & General Group Plc | $8.1M | 37,031 | 0.00% | 31q | -1.6%-$128.4K |
| Robeco Schweiz AG | $8.0M | 36,500 | 0.13% | 3q | HELD |
| PDT Partners, LLC | $7.6M | 34,904 | 0.40% | 7q | -17.1%-$1.6M |
| GHP Investment Advisors, Inc. | $7.6M | 34,798 | 0.28% | 9q | +4.8%+$347.5K |
| Bridge City Capital, LLC | $7.3M | 33,318 | 1.66% | 31q | +47.5%+$2.3M |
| Manatuck Hill Partners, LLC | $7.3M | 33,300 | 2.41% | 13q | +117.6%+$3.9M |
| INTRINSIC EDGE CAPITAL MANAGEMENT LLC | $7.2M | 32,959 | 0.75% | 9q | +26.0%+$1.5M |
| Swiss National Bank | $6.9M | 31,380 | 0.00% | 31q | -1.6%-$113.7K |
| STIFEL FINANCIAL CORP | $6.4M | 29,166 | 0.01% | 9q | +0.7%+$45.3K |
| HRT FINANCIAL LP | $6.2M | 28,570 | 0.01% | 8q | -20.0%-$1.6M |
| Divisadero Street Capital Management, LP | $6.1M | 27,859 | 0.14% | new | NEW |
| CITADEL ADVISORS LLC | $5.9M CALL+PUT | options only | 0.00% | 31q | OPTIONS |
| Advisors Asset Management, Inc. | $5.6M | 25,735 | 0.09% | 17q | +7.8%+$405.9K |
| ALLIANCEBERNSTEIN L.P. | $5.5M | 20,686 | 0.00% | 31q | +13.6%+$657.9K |
| LPL Financial LLC | $5.2M | 23,880 | 0.00% | 7q | -3.4%-$181.3K |
| LOOMIS SAYLES & CO L P | $5.0M | 22,774 | 0.01% | 6q | -88.1%-$36.9M |
| XTX Topco Ltd | $5.0M | 22,715 | 0.06% | new | NEW |
| JANE STREET GROUP, LLC | $4.7M incl. $4.5M options CALL+PUT | 945 | 0.00% | 17q | HELD |
| Daiichi Life Insurance Co., Ltd. | $4.7M | 21,398 | 0.11% | 3q | -37.4%-$2.8M |
| DEUTSCHE BANK AG\ | $4.7M | 21,267 | 0.00% | 34q | +15.3%+$618.7K |
| D. E. Shaw & Co., Inc. | $4.5M | 20,599 | 0.00% | 28q | +182.8%+$2.9M |
| CITIGROUP INC | $4.3M | 19,825 | 0.00% | 31q | +254.6%+$3.1M |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC | $4.2M | 19,422 | 0.08% | 3q | +707.9%+$3.7M |
| Stanley-Laman Group, Ltd. | $4.1M | 18,722 | 0.42% | 10q | HELD |
| Weiss Asset Management LP | $4.1M | 18,580 | 0.04% | new | NEW |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | $4.0M | 18,144 | 0.00% | 31q | -2.8%-$115.0K |
| OAK RIDGE INVESTMENTS LLC | $3.8M | 17,600 | 0.22% | 3q | +29.8%+$883.8K |
| AQR CAPITAL MANAGEMENT LLC | $3.8M | 17,540 | 0.00% | 29q | -8.2%-$344.0K |
| MML INVESTORS SERVICES, LLC | $3.7M | 16,729 | 0.01% | 9q | +31.7%+$880.0K |
| CHATHAM CAPITAL GROUP, INC. | $3.6M | 16,405 | 0.46% | 12q | +4.5%+$155.9K |
| Moody Aldrich Partners LLC | $3.6M | 16,368 | 0.64% | 9q | -10.2%-$407.9K |
| PRUDENTIAL FINANCIAL INC | $3.5M | 16,064 | 0.00% | 32q | +1.2%+$41.8K |
| Hilton Capital Management, LLC | $3.4M | 15,476 | 0.23% | new | NEW |
| Moran Wealth Management, LLC | $3.4M | 15,352 | 0.09% | 6q | +4.6%+$147.8K |
| SIG BROKERAGE, LP | $3.3M CALL | options only | 0.06% | new | OPTIONS |
| VANGUARD ASSET MANAGEMENT, Ltd | $3.2M | 14,752 | 0.00% | 2q | -0.8%-$26.5K |
| STATE OF WISCONSIN INVESTMENT BOARD | $3.0M | 13,702 | 0.01% | 12q | +2.8%+$82.4K |
| ROYAL BANK OF CANADA | $2.9M | 13,120 | 0.00% | 31q | -0.7%-$19.5K |
| Trexquant Investment LP | $2.9M | 13,054 | 0.02% | new | NEW |
| WEDGE CAPITAL MANAGEMENT L L P/NC | $2.9M | 13,052 | 0.05% | 15q | +7.9%+$209.5K |
| CANADA LIFE ASSURANCE Co | $2.8M | 13,022 | 0.00% | 27q | -2.7%-$80.0K |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-10-27 | 13G/A | BlackRock, Inc. | 15.2% |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 83 | $93.8M | 491,642 | 8 | 30 | 27 | 0.0% |
| Q2 2026 | 374 | $4.2B | 18,978,037 | 59 | 122 | 134 | 0.9% |
| Q1 2026 | 372 | $5.1B | 18,842,644 | 44 | 116 | 138 | 1.2% |
| Q4 2025 | 362 | $4.8B | 18,813,699 | 48 | 129 | 109 | 0.4% |
| Q3 2025 | 352 | $4.7B | 18,826,010 | 54 | 103 | 128 | 0.7% |
| Q2 2025 | 343 | $4.3B | 18,759,875 | 57 | 109 | 119 | 1.8% |
| Q1 2025 | 314 | $3.8B | 19,405,916 | 53 | 91 | 108 | 1.7% |
| Q4 2024 | 314 | $3.1B | 18,101,399 | 52 | 107 | 98 | 1.8% |
| Q3 2024 | 273 | $2.5B | 16,593,154 | 32 | 100 | 83 | 0.7% |
| Q2 2024 | 267 | $2.2B | 15,667,212 | 41 | 93 | 82 | 0.5% |
| Q1 2024 | 250 | $2.3B | 15,733,845 | 44 | 62 | 97 | 0.2% |
| Q4 2023 | 227 | $2.0B | 15,768,581 | 24 | 73 | 75 | 0.5% |
| Q3 2023 | 237 | $1.8B | 15,128,468 | 35 | 69 | 81 | 0.5% |
| Q2 2023 | 210 | $1.8B | 15,168,866 | 42 | 49 | 73 | 0.2% |
| Q1 2023 | 183 | $1.6B | 15,131,382 | 23 | 54 | 66 | 0.3% |
| Q4 2022 | 188 | $1.2B | 15,360,507 | 28 | 45 | 73 | 0.3% |
| Q3 2022 | 173 | $1.3B | 18,231,017 | 22 | 52 | 62 | 1.1% |
| Q2 2022 | 182 | $1.4B | 16,838,766 | 23 | 45 | 78 | 0.3% |
| Q1 2022 | 177 | $1.5B | 17,258,815 | 13 | 60 | 74 | 0.1% |
| Q4 2021 | 189 | $2.7B | 29,275,396 | 15 | 56 | 70 | 0.0% |
| Q3 2021 | 189 | $2.1B | 22,130,509 | 15 | 57 | 66 | 0.1% |
| Q2 2021 | 190 | $2.3B | 22,527,855 | 14 | 67 | 62 | 0.2% |
| Q1 2021 | 191 | $3.3B | 34,199,961 | 24 | 49 | 69 | 0.2% |
| Q4 2020 | 186 | $2.1B | 21,958,660 | 16 | 51 | 72 | 0.5% |
| Q3 2020 | 185 | $1.8B | 22,574,212 | 25 | 49 | 64 | 1.8% |
| Q2 2020 | 190 | $1.7B | 22,871,351 | 29 | 53 | 65 | 1.7% |
| Q1 2020 | 191 | $2.2B | 32,077,603 | 21 | 62 | 64 | 0.7% |
| Q4 2019 | 217 | $2.4B | 23,836,778 | 19 | 69 | 75 | 1.9% |
| Q3 2019 | 234 | $2.5B | 23,757,355 | 39 | 82 | 56 | 2.5% |
| Q2 2019 | 220 | $2.8B | 23,982,100 | 45 | 64 | 59 | 4.8% |
| Q1 2019 | 199 | $2.1B | 23,648,350 | 40 | 61 | 51 | 2.5% |
| Q4 2018 | 168 | $1.8B | 23,795,928 | 4 | 3 | 4 | 1.8% |