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, Q1 2026
Institutional positions in Ribbon Communications Inc. as of Mar 31, 2026. 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
- 150
- +2 vs. Q4 2025
- Shares held
- 129.3M
- +7.49M (+6.2%) vs. Q4 2025
- Total value
- $268.2M
- −$78.4M (−22.6%) vs. Q4 2025
- New holders
- 37
- 51 more added
- Sold out
- 35
- 43 more reduced
5 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: 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, Q1 2026
Shares, value and share of portfolio for each institution holding Ribbon Communications Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Barclays PLC | 101,833 | $215.9K | 0.00% | −100,628−49.7% | Reduced |
| Ameriprise Financial Inc | 107,484 | $227.9K | 0.00% | −21,491−16.7% | Reduced |
| Franklin Resources Inc | 108,769 | $230.6K | 0.00% | +37,565+52.8% | Added |
| Vanguard Global Advisers, LLC | 126,258 | $267.7K | 0.00% | +126,258 | New |
| Rhumbline Advisers | 128,405 | $272.2K | 0.00% | +118+0.1% | Added |
| LSV Asset Management | 135,800 | $288.0K | 0.00% | 00.0% | Unchanged |
| Engineers Gate Manager LP | 139,962 | $296.7K | 0.00% | +84,482+152.3% | Added |
| EntryPoint Capital, LLC | 140,304 | $297.4K | 0.09% | +15,731+12.6% | Added |
| XTX Topco Ltd | 160,942 | $341.2K | 0.01% | +58,057+56.4% | Added |
| Alliancebernstein L.P. | 120,149 | $346.0K | 0.00% | +899+0.8% | Added |
| Nuveen, LLC | 177,201 | $375.7K | 0.00% | +966+0.5% | Added |
| Invesco Ltd. | 181,843 | $385.5K | 0.00% | +12,928+7.7% | Added |
| UBS Group AG | 192,850 | $408.8K | 0.00% | +1,480+0.8% | Added |
| ExodusPoint Capital Management, LP | 196,908 | $417.4K | 0.00% | −1,283−0.6% | Reduced |
| OP Asset Management Ltd | 206,802 | $438.4K | 0.00% | +206,802 | New |
| Voya Investment Management LLC | 207,699 | $440.3K | 0.00% | +58,139+38.9% | Added |
| Bank of America Corp | 208,230 | $441.4K | 0.00% | +60,541+41.0% | Added |
| American Century Companies Inc | 212,363 | $450.2K | 0.00% | −1,583−0.7% | Reduced |
| Pacific Ridge Capital Partners, LLC | 246,176 | $521.9K | 0.11% | +470.0% | Added |
| Commonwealth Equity Services, LLC | 284,723 | $603.6K | 0.00% | −210.0% | Reduced |
| Gsa Capital Partners LLP | 292,756 | $621.0K | 0.04% | +5,173+1.8% | Added |
| Russell Investments Group, Ltd. | 351,873 | $746.0K | 0.00% | +264,341+302.0% | Added |
| Bank of New York Mellon Corp | 377,364 | $800.0K | 0.00% | −12,630−3.2% | Reduced |
| Victory Capital Management Inc | 422,351 | $895.4K | 0.00% | +72,808+20.8% | Added |
| Morgan Stanley | 423,465 | $897.7K | 0.00% | +31,074+7.9% | Added |
| Silverberg Bernstein Capital Management LLC | 438,123 | $928.8K | 0.51% | +2,100+0.5% | Added |
| Millennium Management LLC | 491,320 | $1.04M | 0.00% | +437,014+804.7% | Added |
| Citadel Advisors LLC | 574,989 | $1.22M | 0.00% | +521,086+966.7% | Added |
| Vanguard Fiduciary Trust Co | 587,429 | $1.25M | 0.00% | +587,429 | New |
| Jacobs Levy Equity Management, Inc | 685,310 | $1.45M | 0.01% | −204,858−23.0% | Reduced |
| Northern Trust Corp | 705,858 | $1.50M | 0.00% | −216,696−23.5% | Reduced |
| Charles Schwab Investment Management Inc | 708,163 | $1.50M | 0.00% | −60,911−7.9% | Reduced |
| Goldman Sachs Group Inc | 744,745 | $1.58M | 0.00% | −42,748−5.4% | Reduced |
| Marshall Wace, LLP | 769,787 | $1.63M | 0.00% | +596,085+343.2% | Added |
| Arrowstreet Capital, Limited Partnership | 1,216,876 | $2.58M | 0.00% | +187,160+18.2% | Added |
| AQR Capital Management LLC | 1,257,347 | $2.67M | 0.00% | +765,876+155.8% | Added |
| First Wilshire Securities Management Inc | 1,407,178 | $2.98M | 0.67% | +139,592+11.0% | Added |
| Acadian Asset Management LLC | 1,438,490 | $3.04M | 0.00% | +677,325+89.0% | Added |
| D. E. Shaw & Co., Inc. | 1,538,472 | $3.26M | 0.00% | +558,631+57.0% | Added |
| State Street Corp | 1,910,027 | $4.05M | 0.00% | −189,766−9.0% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 2,089,722 | $4.43M | 0.01% | +93,877+4.7% | Added |
| Geode Capital Management, LLC | 2,414,560 | $5.12M | 0.00% | +111,987+4.9% | Added |
| Vanguard Portfolio Management LLC | 3,335,665 | $7.07M | 0.00% | +3,335,665 | New |
| Vanguard Capital Management LLC | 4,216,459 | $8.94M | 0.00% | +4,216,459 | New |
| Royce & Associates LP | 4,879,741 | $10.3M | 0.10% | +265,000+5.7% | Added |
| Dimensional Fund Advisors LP | 6,351,110 | $13.5M | 0.00% | −124,015−1.9% | Reduced |
| BlackRock, Inc. | 6,724,007 | $14.3M | 0.00% | −941,918−12.3% | Reduced |
| Paradigm Capital Management Inc | 8,036,335 | $17.0M | 0.65% | −286,963−3.4% | Reduced |
| Neuberger Berman Group LLC | 17,361,988 | $33.2M | 0.03% | −69,114−0.4% | Reduced |
| JPMorgan Chase & Co | 52,043,036 | $108.0M | 0.01% | +5,4590.0% | Added |
| First Eagle Investment Management, LLC | 0 | $0 | 0.00% | −862,528−100.0% | Sold out |
| Kennedy Capital Management, Inc. | 0 | $0 | 0.00% | −710,703−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −379,465−100.0% | Sold out |
| State of Wisconsin Investment Board | 0 | $0 | 0.00% | −310,366−100.0% | Sold out |
| Swiss National Bank | 0 | $0 | 0.00% | −185,474−100.0% | Sold out |
| Bailard, Inc. | 0 | $0 | 0.00% | −74,800−100.0% | Sold out |
| Oxford Asset Management LLP | 0 | $0 | 0.00% | −55,568−100.0% | Sold out |
| Los Angeles Capital Management LLC | 0 | $0 | 0.00% | −42,367−100.0% | Sold out |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0 | $0 | 0.00% | −47,307−100.0% | Sold out |
| Qube Research & Technologies Ltd | 0 | $0 | 0.00% | −44,058−100.0% | Sold out |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 0 | $0 | 0.00% | −40,666−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −40,496−100.0% | Sold out |
| Janus Henderson Group PLC | 0 | $0 | 0.00% | −35,625−100.0% | Sold out |
| Arizona State Retirement System | 0 | $0 | 0.00% | −27,369−100.0% | Sold out |
| Rpo LLC | 0 | $0 | 0.00% | −22,208−100.0% | Sold out |
| GWM Advisors LLC | 0 | $0 | 0.00% | −22,179−100.0% | Sold out |
| KLP Kapitalforvaltning AS | 0 | $0 | 0.00% | −20,800−100.0% | Sold out |
| Brevan Howard Capital Management LP | 0 | $0 | 0.00% | −18,219−100.0% | Sold out |
| Amundi | 0 | $0 | 0.00% | −17,768−100.0% | Sold out |
| Two Sigma Investments, LP | 0 | $0 | 0.00% | −16,984−100.0% | Sold out |
| nVerses Capital, LLC | 0 | $0 | 0.00% | −12,987−100.0% | Sold out |
| DGS Capital Management, LLC | 0 | $0 | 0.00% | −12,475−100.0% | Sold out |
| JMN Financial LLC | 0 | $0 | 0.00% | −12,475−100.0% | Sold out |
| Boothbay Fund Management, LLC | 0 | $0 | 0.00% | −11,104−100.0% | Sold out |
| Mackenzie Financial Corp | 0 | $0 | 0.00% | −10,652−100.0% | Sold out |
| Keel Point, LLC | 0 | $0 | 0.00% | −10,721−100.0% | Sold out |
| Fortis Advisors, LLC | 0 | $0 | 0.00% | −10,000−100.0% | Sold out |
| Great West Life Assurance Co | 0 | $0 | 0.00% | −3,680−100.0% | Sold out |
| Amalgamated Bank | 0 | $0 | 0.00% | −2,947−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −2,586−100.0% | Sold out |
| Parallel Advisors, LLC | 0 | $0 | 0.00% | −207−100.0% | Sold out |
| Quadrant Capital Group LLC | 0 | $0 | 0.00% | −168−100.0% | Sold out |
| Nisa Investment Advisors, LLC | 0 | $0 | 0.00% | −157−100.0% | Sold out |
| GAMMA Investing LLC | 0 | $0 | 0.00% | −52−100.0% | Sold out |
| Arlington Trust Co LLC | 0 | $0 | 0.00% | −6−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |
| Global Retirement Partners, LLC | – | – | – | – | Not filed |
| Sherbrooke Park Advisers LLC | – | – | – | – | Not filed |
| Comerica Bank | – | – | – | – | Not filed |
| CIBC Private Wealth Group, LLC | – | – | – | – | Not filed |