OCC Optical Cable Corp.
Optical Cable Corp. (OCC) Institutional Ownership
What the institutions did with OCC last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| GENDELL JEFFREY L | 391.6K | 18.3% |
| JANE STREET GROUP, LLC | 291.9K | 13.6% |
| VANGUARD CAPITAL MANAGEMENT LLC | 260.3K | 12.1% |
| DIMENSIONAL FUND ADVISORS LP | 145.0K | 6.8% |
| BlackRock, Inc. | 133.4K | 6.2% |
| HRT FINANCIAL LP | 107.9K | 5.0% |
| TWO SIGMA INVESTMENTS, LP | 98.4K | 4.6% |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 87.0K | 4.1% |
| RENAISSANCE TECHNOLOGIES LLC | 71.9K | 3.4% |
| GEODE CAPITAL MANAGEMENT, LLC | 70.3K | 3.3% |
| Informed Momentum Co LLC | 63.5K | 3.0% |
| Round Rock Advisors LLC | 58.9K | 2.7% |
| SEI INVESTMENTS CO | 37.6K | 1.8% |
| STATE STREET CORP | 36.6K | 1.7% |
| VANGUARD FIDUCIARY TRUST CO | 35.7K | 1.7% |
| GSA CAPITAL PARTNERS LLP | 31.0K | 1.4% |
| Cetera Investment Advisers | 28.4K | 1.3% |
| MORGAN STANLEY | 22.7K | 1.1% |
| MANGROVE PARTNERS IM, LLC | 20.2K | 0.9% |
| Brendel Financial Advisors LLC | 18.2K | 0.8% |
| Clearstead Advisors, LLC | 17.9K | 0.8% |
| RBF Capital, LLC | 16.0K | 0.7% |
| Dynamic Technology Lab Private Ltd | 15.5K | 0.7% |
| SHIKIAR ASSET MANAGEMENT INC | 14.6K | 0.7% |
| Hilltop Holdings Inc. | 14.0K | 0.7% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| JANE STREET GROUP, LLC | Increased | 54.8K | 291.9K | +237.1K |
| BlackRock, Inc. | Increased | 37.3K | 133.4K | +96.0K |
| HRT FINANCIAL LP | Increased | 17.4K | 107.9K | +90.5K |
| SEI INVESTMENTS CO | Reduced | 91.4K | 37.6K | -53.8K |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 211.5K | 260.3K | +48.8K |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | Increased | 48.3K | 87.0K | +38.7K |
| Legacy Financial Advisors, Inc. | Sold Out | 33.4K | 0 | -33.4K |
| Cetera Investment Advisers | New | 0 | 28.4K | +28.4K |
| TWO SIGMA INVESTMENTS, LP | Increased | 70.7K | 98.4K | +27.8K |
| Round Rock Advisors LLC | Increased | 31.3K | 58.9K | +27.7K |
| GENDELL JEFFREY L | Reduced | 417.4K | 391.6K | -25.8K |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 168.2K | 145.0K | -23.2K |
| MANGROVE PARTNERS IM, LLC | New | 0 | 20.2K | +20.2K |
| Brendel Financial Advisors LLC | New | 0 | 18.2K | +18.2K |
| MERCER GLOBAL ADVISORS INC /ADV | Sold Out | 18.0K | 0 | -18.0K |
| Dynamic Technology Lab Private Ltd | New | 0 | 15.5K | +15.5K |
| UBS Group AG | Reduced | 22.4K | 7.1K | -15.4K |
| SHIKIAR ASSET MANAGEMENT INC | Reduced | 28.2K | 14.6K | -13.6K |
| Centiva Capital, LP | Sold Out | 13.0K | 0 | -13.0K |
| ESSEX INVESTMENT MANAGEMENT CO LLC | New | 0 | 12.6K | +12.6K |
| MACKENZIE FINANCIAL CORP | Sold Out | 12.5K | 0 | -12.5K |
| Informed Momentum Co LLC | Reduced | 75.1K | 63.5K | -11.6K |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | 83.3K | 71.9K | -11.4K |
| Virtu Financial LLC | Sold Out | 11.4K | 0 | -11.4K |
| Bank of New York Mellon Corp | New | 0 | 10.3K | +10.3K |
| RBF Capital, LLC | Reduced | 20.0K | 16.0K | -4.0K |
| MORGAN STANLEY | Increased | 18.9K | 22.7K | +3.7K |
| VANGUARD FIDUCIARY TRUST CO | Increased | 32.5K | 35.7K | +3.2K |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | 72.4K | 70.3K | -2.2K |
| CITIGROUP INC | Increased | 1 | 2.0K | +2.0K |
| OSAIC HOLDINGS, INC. | Increased | 125 | 2.2K | +2.0K |
| Vanguard Global Advisers, LLC | Reduced | 4.2K | 2.4K | -1.7K |
| GSA CAPITAL PARTNERS LLP | Reduced | 32.7K | 31.0K | -1.7K |
| Tower Research Capital LLC (TRC) | Increased | 246 | 1.4K | +1.1K |
| Allworth Financial LP | New | 0 | 1.0K | +1.0K |
| NORTHERN TRUST CORP | Increased | 12.6K | 13.1K | +541 |
| STATE STREET CORP | Reduced | 36.8K | 36.6K | -200 |
| JONES FINANCIAL COMPANIES LLLP | New | 0 | 194 | +194 |
| ASSETMARK, INC | New | 0 | 100 | +100 |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | New | 0 | 74 | +74 |
| Caitong International Asset Management Co., Ltd | Increased | 1 | 68 | +67 |
| SBI Securities Co., Ltd. | Reduced | 120 | 100 | -20 |
| ROYAL BANK OF CANADA | Reduced | 254 | 241 | -13 |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.