RBBN Ribbon Communications Inc.
Ribbon Communications Inc. (RBBN) Institutional Ownership
What the institutions did with RBBN 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 September 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 |
|---|---|---|
| DIMENSIONAL FUND ADVISORS LP | 5.7M | 35.5% |
| ROYCE & ASSOCIATES LP | 3.2M | 19.9% |
| ACADIAN ASSET MANAGEMENT LLC | 2.3M | 14.5% |
| GEODE CAPITAL MANAGEMENT, LLC | 2.2M | 13.7% |
| Silverberg Bernstein Capital Management LLC | 412.2K | 2.6% |
| Bank of New York Mellon Corp | 383.7K | 2.4% |
| BARCLAYS PLC | 343.3K | 2.2% |
| COMMONWEALTH EQUITY SERVICES, LLC | 284.7K | 1.8% |
| Nuveen, LLC | 203.6K | 1.3% |
| Creative Planning | 178.6K | 1.1% |
| LSV ASSET MANAGEMENT | 135.8K | 0.9% |
| CITIGROUP INC | 97.4K | 0.6% |
| INDEPENDENT FINANCIAL GROUP, LLC | 93.2K | 0.6% |
| Russell Investments Group, Ltd. | 80.5K | 0.5% |
| DEUTSCHE BANK AG\ | 71.7K | 0.4% |
| SEVEN MILE ADVISORY | 62.5K | 0.4% |
| Assenagon Asset Management S.A. | 37.9K | 0.2% |
| State of Alaska, Department of Revenue | 27.8K | 0.2% |
| WEDBUSH SECURITIES INC | 25.6K | 0.2% |
| STRS OHIO | 24.7K | 0.2% |
| Police & Firemen's Retirement System of New Jersey | 24.7K | 0.2% |
| MACKENZIE FINANCIAL CORP | 22.4K | 0.1% |
| VISTA INVESTMENT PARTNERS LLC | 20.4K | 0.1% |
| LPL Financial LLC | 19.4K | 0.1% |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | 13.4K | 0.1% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| ROYCE & ASSOCIATES LP | Reduced | 5.1M | 3.2M | -1.9M |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 6.3M | 5.7M | -635.3K |
| ACADIAN ASSET MANAGEMENT LLC | Increased | 1.8M | 2.3M | +538.1K |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | 2.5M | 2.2M | -309.6K |
| Russell Investments Group, Ltd. | Reduced | 385.2K | 80.5K | -304.7K |
| BARCLAYS PLC | Increased | 94.5K | 343.3K | +248.8K |
| Squarepoint Ops LLC | Sold Out | 191.4K | 0 | -191.4K |
| INDEPENDENT FINANCIAL GROUP, LLC | New | 0 | 93.2K | +93.2K |
| Creative Planning | Increased | 100.6K | 178.6K | +78.0K |
| SIMPLEX TRADING, LLC | Sold Out | 73.9K | 0 | -73.9K |
| SEVEN MILE ADVISORY | New | 0 | 62.5K | +62.5K |
| Assenagon Asset Management S.A. | Reduced | 75.9K | 37.9K | -37.9K |
| Nuveen, LLC | Increased | 177.2K | 203.6K | +26.4K |
| Abacus Wealth Partners, LLC | Sold Out | 26.1K | 0 | -26.1K |
| WEDBUSH SECURITIES INC | New | 0 | 25.6K | +25.6K |
| INTECH INVESTMENT MANAGEMENT LLC | Sold Out | 20.7K | 0 | -20.7K |
| Trilogy Capital Inc. | Sold Out | 12.1K | 0 | -12.1K |
| DEUTSCHE BANK AG\ | Reduced | 81.9K | 71.7K | -10.3K |
| Kathmere Capital Management, LLC | Sold Out | 10.0K | 0 | -10.0K |
| CITIGROUP INC | Increased | 87.9K | 97.4K | +9.5K |
| STRS OHIO | Increased | 17.6K | 24.7K | +7.1K |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | Reduced | 20.3K | 13.4K | -6.9K |
| Silverberg Bernstein Capital Management LLC | Reduced | 418.8K | 412.2K | -6.6K |
| FMR LLC | Reduced | 6.9K | 2.1K | -4.7K |
| Bank of New York Mellon Corp | Increased | 379.8K | 383.7K | +3.9K |
| FIFTH THIRD BANCORP | Reduced | 4.5K | 685 | -3.9K |
| SIGNATUREFD, LLC | Increased | 405 | 2.9K | +2.5K |
| State of Alaska, Department of Revenue | Increased | 25.4K | 27.8K | +2.4K |
| Farther Finance Advisors, LLC | Increased | 1.7K | 3.0K | +1.3K |
| Bell Investment Advisors, Inc | Sold Out | 1.3K | 0 | -1.3K |
| LPL Financial LLC | Increased | 18.3K | 19.4K | +1.1K |
| ProShare Advisors LLC | Reduced | 12.3K | 11.8K | -504 |
| SJS Investment Consulting Inc. | Increased | 130 | 629 | +499 |
| PNC Financial Services Group, Inc. | Reduced | 796 | 338 | -458 |
| MassMutual Private Wealth & Trust, FSB | Sold Out | 381 | 0 | -381 |
| EverSource Wealth Advisors, LLC | Reduced | 734 | 408 | -326 |
| Root Financial Partners, LLC | New | 0 | 317 | +317 |
| Physician Wealth Advisors, Inc. | New | 0 | 305 | +305 |
| Parkside Financial Bank & Trust | Sold Out | 240 | 0 | -240 |
| US BANCORP \DE\ | Reduced | 875 | 641 | -234 |
| Essential Partners LLC | Increased | 291 | 518 | +227 |
| Allworth Financial LP | Increased | 4.3K | 4.5K | +168 |
| Parallel Advisors, LLC | New | 0 | 134 | +134 |
| IFP Advisors, Inc | Reduced | 128 | 5 | -123 |
| Sterling Capital Management LLC | Increased | 1.8K | 1.8K | +94 |
| Larson Financial Group LLC | Increased | 217 | 289 | +72 |
| Indivisible Partners | Increased | 10.3K | 10.3K | +70 |
| ZIONS BANCORPORATION, NATIONAL ASSOCIATION /UT/ | New | 0 | 66 | +66 |
| Clearstead Advisors, LLC | Sold Out | 18 | 0 | -18 |
| True Wealth Design, LLC | Increased | 158 | 175 | +17 |
| BEACON INVESTMENT ADVISORY SERVICES, INC. | New | 0 | 5 | +5 |
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.