Ribbon Communications Inc.
RBBN- Exchange
- Nasdaq
- Industry
- Services-Computer Integrated Systems Design
- SEC CIK
- 0001708055
No open-market purchases or sales by Ribbon Communications Inc. insiders were filed in the last 90 days; 160 institutions reported holding it in 13F filings for Q2 2026, worth $289.8M in total; no superinvestor holds it.
13F holders, Q2 2021
Institutional positions in Ribbon Communications Inc. as of Jun 30, 2021. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 127
- −19 vs. Q1 2021
- Shares held
- 98.4M
- +337.8K (+0.3%) vs. Q1 2021
- Total value
- $748.5M
- −$56.3M (−7.0%) vs. Q1 2021
- New holders
- 15
- 47 more added
- Sold out
- 34
- 38 more reduced
Compare with Q1 2021: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting RBBN on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 160 | $289.8M |
| Q1 2026 | 150 | $268.2M |
| Q4 2025 | 153 | $369.2M |
| Q3 2025 | 153 | $488.6M |
| Q2 2025 | 145 | $508.9M |
| Q1 2025 | 144 | $495.2M |
| Q4 2024 | 133 | $519.8M |
| Q3 2024 | 126 | $402.3M |
| Q2 2024 | 129 | $424.9M |
| Q1 2024 | 132 | $397.7M |
| Q4 2023 | 125 | $372.7M |
| Q3 2023 | 122 | $341.2M |
| Q2 2023 | 127 | $353.2M |
| Q1 2023 | 145 | $422.5M |
| Q4 2022 | 130 | $329.3M |
| Q3 2022 | 129 | $262.9M |
| Q2 2022 | 132 | $306.6M |
| Q1 2022 | 136 | $308.9M |
| Q4 2021 | 129 | $600.0M |
| Q3 2021 | 124 | $580.4M |
| Q2 2021 | 127 | $748.5M |
| Q1 2021 | 146 | $804.7M |
Institutions, Q2 2021
Shares, value and share of portfolio for each institution holding Ribbon Communications Inc.; share changes are against Q1 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Hussman Strategic Advisors, Inc. | 186,000 | $1.42M | 0.29% | +42,000+29.2% | Added |
| Susquehanna International Group, LLP | 189,743 | $1.44M | 0.00% | −202,477−51.6% | Reduced |
| Globeflex Capital L P | 197,647 | $1.50M | 0.27% | 00.0% | Unchanged |
| Renaissance Technologies LLC | 206,900 | $1.57M | 0.00% | −400,436−65.9% | Reduced |
| Swiss National Bank | 208,274 | $1.58M | 0.00% | +42,200+25.4% | Added |
| Bank of New York Mellon Corp | 324,262 | $2.47M | 0.00% | −30,552−8.6% | Reduced |
| D. E. Shaw & Co., Inc. | 397,021 | $3.02M | 0.00% | −188,983−32.2% | Reduced |
| Putnam Investments LLC | 494,500 | $3.76M | 0.01% | +147,700+42.6% | Added |
| Hillsdale Investment Management Inc. | 578,800 | $4.40M | 0.35% | 00.0% | Unchanged |
| Jacobs Levy Equity Management, Inc | 628,475 | $4.78M | 0.03% | +189,221+43.1% | Added |
| Charles Schwab Investment Management Inc | 712,736 | $5.42M | 0.00% | +19,017+2.7% | Added |
| Penserra Capital Management LLC | 793,801 | $6.04M | 0.11% | −784−0.1% | Reduced |
| Northern Trust Corp | 834,181 | $6.35M | 0.00% | +7,211+0.9% | Added |
| Nuveen Asset Management, LLC | 853,856 | $6.50M | 0.00% | +10,940+1.3% | Added |
| Arrowstreet Capital, Limited Partnership | 1,054,856 | $8.03M | 0.01% | +216,895+25.9% | Added |
| Herald Investment Management Ltd | 1,088,000 | $8.27M | 1.35% | 00.0% | Unchanged |
| First Trust Advisors LP | 1,419,345 | $10.8M | 0.01% | +424,888+42.7% | Added |
| Geode Capital Management, LLC | 1,670,574 | $12.7M | 0.00% | +87,682+5.5% | Added |
| Impax Asset Management Group plc | 1,683,111 | $12.8M | 0.06% | +683,111+68.3% | Added |
| State Street Corp | 1,720,285 | $13.1M | 0.00% | +217,173+14.4% | Added |
| Ophir Asset Management Pty Ltd | 2,699,526 | $20.5M | 3.61% | +327,694+13.8% | Added |
| Neuberger Berman Group LLC | 3,108,678 | $23.5M | 0.02% | −58,738−1.9% | Reduced |
| Dimensional Fund Advisors LP | 3,738,533 | $28.5M | 0.01% | +151,051+4.2% | Added |
| Vanguard Group Inc | 4,560,697 | $34.7M | 0.00% | +285,579+6.7% | Added |
| BlackRock Inc. | 6,586,578 | $50.1M | 0.00% | −145,601−2.2% | Reduced |
| Paradigm Capital Management Inc | 8,424,400 | $64.1M | 3.08% | +268,900+3.3% | Added |
| JPMorgan Chase & Co | 49,949,398 | $380.1M | 0.05% | −5540.0% | Reduced |
| Rafferty Asset Management, LLC | 0 | $0 | 0.00% | −355,591−100.0% | Sold out |
| Cerberus Capital Management, L.P. | 0 | $0 | 0.00% | −338,984−100.0% | Sold out |
| EAM Global Investors LLC | 0 | $0 | 0.00% | −215,689−100.0% | Sold out |
| EAM Investors, LLC | 0 | $0 | 0.00% | −153,120−100.0% | Sold out |
| California Public Employees Retirement System | 0 | $0 | 0.00% | −139,800−100.0% | Sold out |
| Ergoteles LLC | 0 | $0 | 0.00% | −125,100−100.0% | Sold out |
| Assenagon Asset Management S.A. | 0 | $0 | 0.00% | −107,083−100.0% | Sold out |
| Oberweis Asset Management Inc | 0 | $0 | 0.00% | −101,400−100.0% | Sold out |
| Mackay Shields LLC | 0 | $0 | 0.00% | −70,600−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −64,923−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −52,940−100.0% | Sold out |
| Cubist Systematic Strategies, LLC | 0 | $0 | 0.00% | −38,287−100.0% | Sold out |
| Cipher Capital LP | 0 | $0 | 0.00% | −33,051−100.0% | Sold out |
| Ameriprise Financial Inc | 0 | $0 | 0.00% | −28,169−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −27,949−100.0% | Sold out |
| Two Sigma Investments, LP | 0 | $0 | 0.00% | −20,283−100.0% | Sold out |
| Qube Research & Technologies Ltd | 0 | $0 | 0.00% | −19,787−100.0% | Sold out |
| Wolverine Trading, LLC | 0 | $0 | 0.00% | −18,294−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −18,082−100.0% | Sold out |
| Bridgefront Capital, LLC | 0 | $0 | 0.00% | −16,845−100.0% | Sold out |
| Aigen Investment Management, LP | 0 | $0 | 0.00% | −14,652−100.0% | Sold out |
| Marshall Wace North America L.P. | 0 | $0 | 0.00% | −14,333−100.0% | Sold out |
| Bayesian Capital Management, LP | 0 | $0 | 0.00% | −13,904−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −13,723−100.0% | Sold out |
| SG Americas Securities, LLC | 0 | $0 | 0.00% | −13,566−100.0% | Sold out |
| Lazard Asset Management LLC | 0 | $0 | 0.00% | −11,966−100.0% | Sold out |
| Campbell & CO Investment Adviser LLC | 0 | $0 | 0.00% | −10,400−100.0% | Sold out |
| Meeder Asset Management Inc | 0 | $0 | 0.00% | −2,523−100.0% | Sold out |
| Sowell Financial Services LLC | 0 | $0 | 0.00% | −2,762−100.0% | Sold out |
| Bank of Montreal | 0 | $0 | 0.00% | −1,901−100.0% | Sold out |
| Cutler Group LP | 0 | $0 | 0.00% | −320−100.0% | Sold out |
| TCI Wealth Advisors, Inc. | 0 | $0 | 0.00% | −236−100.0% | Sold out |
| Harbour Investments, Inc. | 0 | $0 | 0.00% | −100−100.0% | Sold out |
| Ameritas Investment Company, LLC | 0 | $0 | 0.00% | −44−100.0% | Sold out |