OSI Systems Ownership | Who Owns OSI Systems?
OSI Systems Ownership Summary
OSI Systems is owned by 51.82% institutional investors, 4.59% insiders, and 43.59% retail investors. Blackrock is the largest institutional shareholder, holding 15.31% of OSIS shares. iShares Core S&P Small-Cap ETF is the top mutual fund, with 5.53% of its assets in OSI Systems shares.
OSIS Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | OSI Systems | 51.82% | 4.59% | 43.59% |
| Sector | Technology Stocks | 50.72% | 12.57% | 36.71% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Blackrock | 2.61M | 15.31% | $358.80M |
| Blackrock funding, inc. /de | 2.50M | 14.58% | $624.16M |
| Vanguard group | 2.11M | 12.27% | $525.29M |
| Janus henderson group | 1.23M | 7.36% | $206.07M |
| Fmr | 1.09M | 6.35% | $271.74M |
| Mawer investment management | 856.38K | 4.99% | $213.44M |
| Capital investors | 674.34K | 3.93% | $168.07M |
| State street | 665.89K | 3.88% | $165.97M |
| Ubs asset management americas | 550.50K | 3.20% | $137.21M |
| Dimensional fund advisors lp | 419.47K | 2.44% | $104.53M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Prospect capital advisors | 52.48K | 6.78% | $13.08M |
| Neumeier poma investment counsel | 194.56K | 3.97% | $48.49M |
| Millrace asset group | 16.34K | 2.18% | $2.25M |
| Intrinsic edge capital management | 60.38K | 2.10% | $15.05M |
| Bridge city capital | 27.68K | 1.84% | $6.90M |
| Systematic financial management lp | 256.62K | 1.56% | $63.96M |
| Cascade investment advisors | 9.57K | 1.44% | $2.38M |
| Thematics asset management | 106.41K | 1.20% | $26.52M |
| Manatuck hill partners | 14.30K | 1.18% | $3.56M |
| Moody aldrich partners | 23.71K | 1.12% | $5.91M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Mawer investment management | 856.38K | 1.11% | 343.73K |
| Price t rowe associates inc /md/ | 244.92K | 0.01% | 190.81K |
| Mirae asset global etfs | 161.48K | 0.06% | 161.48K |
| Ubs group | 316.33K | 0.01% | 123.21K |
| Loomis sayles & co l p | 217.21K | 0.06% | 87.89K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| T. rowe price investment management | - | - | -145.15K |
| Ophir asset management pty | - | - | -125.43K |
| Fmr | 1.09M | 0.01% | -100.41K |
| Balyasny asset management | 6.46K | 0.00% | -98.77K |
| Cubist systematic strategies | 1.23K | 0.00% | -59.15K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Norges bank | 54.26K | 0.00% | 54.26K | $9.08M |
| Two sigma advisers, lp | 15.10K | 0.01% | 15.10K | $3.76M |
| Numerai gp | 13.82K | 0.49% | 13.82K | $3.44M |
| Zions bancorporation, national association /ut/ | 5.08K | 0.06% | 5.08K | $1.27M |
| Two sigma securities | 4.46K | 0.16% | 4.46K | $1.11M |
Sold Out
| Holder | Change |
|---|---|
| Mendota financial group | -1.00 |
| Claris advisors, llc / mo / | -1.00 |
| Bokf, na | -3.00 |
| Continuum advisory | -3.00 |
| Global financial private client | -4.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Sep 30, 2025 | 188 | -44.87% | 9,022,213 | -50.45% | 51 | 0.46% | 87 | -48.82% | 70 | -43.55% |
| Jun 30, 2025 | 349 | 7.38% | 18,661,273 | -4.05% | 109 | 0.84% | 173 | 13.07% | 124 | 6.90% |
| Mar 31, 2025 | 5 | -98.42% | 396,449 | -97.81% | 2 | 0.02% | 2 | -98.82% | 2 | -97.96% |
| Dec 31, 2024 | 137 | -50.72% | 6,894,087 | -58.17% | 41 | 0.43% | 71 | -48.18% | 43 | -48.81% |
| Sep 30, 2024 | 278 | 2.96% | 16,479,297 | 7.12% | 98 | 1.21% | 137 | -1.44% | 84 | -4.55% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 930.30K | 5.53% | - |
| American Funds SMALLCAP World A | 674.34K | 4.02% | - |
| Janus Henderson US SMID Cap Growth MA | 559.48K | 3.33% | 559.45K |
| Janus Henderson Triton D | 559.48K | 3.33% | -163.44K |
| Janus Henderson US SMID Cap Growth | 559.48K | 3.33% | -163.44K |
| Vanguard US Total Market Shares ETF | 525.36K | 3.13% | 572.00 |
| Vanguard Total Stock Mkt Idx Inv | 502.12K | 2.99% | -10.55K |
| Fidelity Small Cap Growth | 408.79K | 2.43% | -69.85K |
| Vanguard Small Cap Index | 387.16K | 2.31% | -2.57K |
| iShares Russell 2000 ETF | 387.98K | 2.31% | - |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Nov 10, 2025 | CHOPRA DEEPAK | EXECUTIVE CHAIRMAN | Sell | $5.71M |
| Nov 07, 2025 | Morben Paul Keith | PRES., OPTOELECTRONICS DIV | Sell | $116.11K |
| Nov 07, 2025 | HAWKINS JAMES B | - | Sell | $424.73K |
| Oct 01, 2025 | CHOPRA DEEPAK | EXECUTIVE CHAIRMAN | Sell | $4.92M |
| Sep 12, 2025 | Ballhaus William Francis JR | - | Sell | $133.67K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2025 Q4 | - | 4 |
| 2025 Q3 | - | 2 |
| 2025 Q2 | - | 7 |
| 2025 Q1 | - | 4 |
| 2024 Q4 | - | 11 |
OSIS Ownership FAQ
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