Ribbon Communications Inc. 13F holders
160 funds reported a position in Ribbon Communications Inc. in their 13F for the quarter ended 30 June 2026, together 128.3 million shares worth $289.9 million. Against the quarter before, 22 opened a position, 64 added, 41 trimmed and 12 sold out; together they sold a net 979,750 shares. The largest holders: JPMorgan Chase & Co., Neuberger Berman Group LLC and BlackRock, Inc.
What each fund did in RBBN against its 13F for the quarter before; a change under 0.1% of a holding counts as held
Funds reporting a position in RBBN in their 13F, each quarter; hover a bar for the shares they held
Filed so far for the quarter to 30 September 2026
3,405 funds have filed their 13F for the quarter so far; the rest are due by 16 November 2026. Of those, 27 reported a position in Ribbon Communications Inc.: 5 opened one, 9 added, 5 trimmed and 5 sold out, a net 119,707 shares bought.
The largest moves in the name among the funds that have filed, against each fund's previous 13F.
The well-known funds
Of the 44 funds followed here, 5 reported a position in Ribbon Communications Inc. in a 13F for the quarter ended 30 June 2026. The largest: Geode Capital Management, 2.5 million shares worth $5.8 million, 0.0% of its reported book. New this quarter: Two Sigma Investments. In the quarter, 5 funds added or opened a position and 0 trimmed or sold out; together they bought a net 1.0 million shares, about $2.5 million at the funds' own value per share on 30 June 2026. A change under 0.1% of a holding counts as held.
| Fund | Shares | Value | Of its book | Change on the quarter | Status | Quarter ended | Filing |
|---|---|---|---|---|---|---|---|
| Geode Capital Management | 2,485,064 | $5.8 million | 0.0% | +70,504 | added | 30 June 2026 | 13F |
| Citadel Advisors | 1,241,200 | $2.9 million | 0.0% | +666,211 | added | 30 June 2026 | 13F |
| Millennium Management | 698,458 | $1.6 million | 0.0% | +207,138 | added | 30 June 2026 | 13F |
| Two Sigma Investments | 102,187 | $239,118 | 0.0% | +102,187 | new | 30 June 2026 | 13F |
| FMR LLC | 6,856 | $16,044 | 0.0% | +1,635 | added | 30 June 2026 | 13F |
Read more
Change is shares against the fund's previous 13F; a fund with one filing read shows no change. 13Fs cover long US positions of managers above $100 million and are filed up to 45 days after the quarter.The largest holders
| Fund | Shares | Share of all | Value | Of its book | Change in shares | Filing |
|---|---|---|---|---|---|---|
| JPMorgan Chase & Co. | 52,042,936 | 40.55% | $115.5 million | 0.01% | -100 | 13F |
| Neuberger Berman Group LLC | 18,311,073 | 14.27% | $38.7 million | 0.03% | +949,085 | 13F |
| BlackRock, Inc. | 7,146,590 | 5.57% | $16.7 million | 0.00% | +422,583 | 13F |
| Dimensional Fund Advisors LP | 6,286,323 | 4.90% | $14.7 million | 0.00% | -64,787 | 13F |
| Royce & Associates LP | 5,090,927 | 3.97% | $11.9 million | 0.10% | +211,186 | 13F |
| Vanguard Capital Management LLC | 3,925,626 | 3.06% | $9.2 million | 0.00% | -290,833 | 13F |
| Vanguard Portfolio Management LLC | 3,513,067 | 2.74% | $8.2 million | 0.00% | +177,402 | 13F |
| Paradigm Capital Management Inc. | 3,036,398 | 2.37% | $7.1 million | 0.19% | -4,999,937 | 13F |
| Geode Capital Management, LLC | 2,485,064 | 1.94% | $5.8 million | 0.00% | +70,504 | 13F |
| Connor, Clark & Lunn Investment Management Ltd. | 2,213,134 | 1.72% | $5.2 million | 0.01% | +123,412 | 13F |
| State Street Corp. | 1,930,153 | 1.50% | $4.5 million | 0.00% | +20,126 | 13F |
| D. E. Shaw & Co., Inc. | 1,790,375 | 1.40% | $4.2 million | 0.00% | +251,903 | 13F |
| Acadian Asset Management LLC | 1,768,227 | 1.38% | $4.1 million | 0.01% | +329,737 | 13F |
| AQR Capital Management LLC | 1,409,795 | 1.10% | $3.3 million | 0.00% | +152,448 | 13F |
| First Wilshire Securities Management Inc. | 1,404,493 | 1.09% | $3.3 million | 0.68% | -2,685 | 13F |
| Citadel Advisors LLC | 1,241,200 | 0.97% | $2.9 million | 0.00% | +666,211 | 13F |
| Arrowstreet Capital, Limited Partnership | 1,215,230 | 0.95% | $2.8 million | 0.00% | -1,646 | 13F |
| Marshall Wace, LLP | 814,132 | 0.63% | $1.9 million | 0.00% | +44,345 | 13F |
| Charles Schwab Investment Management Inc. | 800,159 | 0.62% | $1.9 million | 0.00% | +91,996 | 13F |
| Northern Trust Corp. | 749,823 | 0.58% | $1.8 million | 0.00% | +43,965 | 13F |
| Millennium Management LLC | 698,458 | 0.54% | $1.6 million | 0.00% | +207,138 | 13F |
| Vanguard Fiduciary Trust Co. | 612,773 | 0.48% | $1.4 million | 0.00% | +25,344 | 13F |
| Jacobs Levy Equity Management, Inc. | 582,093 | 0.45% | $1.4 million | 0.01% | -103,217 | 13F |
| Victory Capital Management Inc. | 456,421 | 0.36% | $1.1 million | 0.00% | +34,070 | 13F |
| Silverberg Bernstein Capital Management LLC | 418,823 | 0.33% | $980,046 | 0.38% | -19,300 | 13F |
| Goldman Sachs Group Inc. | 415,430 | 0.32% | $972,106 | 0.00% | -329,315 | 13F |
| Russell Investments Group, Ltd. | 385,226 | 0.30% | $901,427 | 0.00% | +33,353 | 13F |
| Bank of New York Mellon Corp | 379,800 | 0.30% | $888,731 | 0.00% | +2,436 | 13F |
| Morgan Stanley | 379,790 | 0.30% | $888,711 | 0.00% | -43,675 | 13F |
| XTX Topco Ltd | 323,307 | 0.25% | $756,538 | 0.01% | +162,365 | 13F |
| BNP Paribas Asset Management Holding S.A. | 303,599 | 0.24% | $710,422 | 0.00% | new | 13F |
| Pacific Ridge Capital Partners, LLC | 286,213 | 0.22% | $669,738 | 0.12% | +40,037 | 13F |
| Commonwealth Equity Services, LLC | 284,723 | 0.22% | $666,250 | 0.00% | no change | 13F |
| Voya Investment Management LLC | 214,879 | 0.17% | $502,817 | 0.00% | +7,180 | 13F |
| American Century Companies Inc. | 211,076 | 0.16% | $493,918 | 0.00% | -1,287 | 13F |
| Squarepoint Ops LLC | 191,402 | 0.15% | $447,881 | 0.00% | new | 13F |
| Bank of America Corp. | 188,437 | 0.15% | $440,942 | 0.00% | -19,793 | 13F |
| Nuveen, LLC | 177,201 | 0.14% | $414,650 | 0.00% | no change | 13F |
| Gsa Capital Partners LLP | 174,044 | 0.14% | $407,000 | 0.03% | -118,712 | 13F |
| EntryPoint Capital, LLC | 172,880 | 0.13% | $404,539 | 0.10% | +32,576 | 13F |
| ExodusPoint Capital Management, LP | 172,615 | 0.13% | $403,919 | 0.00% | -24,293 | 13F |
| UBS Group AG | 165,372 | 0.13% | $386,970 | 0.00% | -27,478 | 13F |
| Invesco Ltd. | 162,669 | 0.13% | $380,646 | 0.00% | -19,174 | 13F |
| Winton Group Ltd | 149,404 | 0.12% | $349,605 | 0.01% | +99,289 | 13F |
| Qube Research & Technologies Ltd | 137,899 | 0.11% | $322,684 | 0.00% | new | 13F |
| LSV Asset Management | 135,800 | 0.11% | $318,000 | 0.00% | no change | 13F |
| Vanguard Global Advisers, LLC | 126,258 | 0.10% | $295,444 | 0.00% | no change | 13F |
| Rhumbline Advisers | 126,186 | 0.10% | $295,269 | 0.00% | -2,219 | 13F |
| AllianceBernstein L.P. | 138,173 | 0.11% | $292,927 | 0.00% | +18,024 | 13F |
| Dynamic Technology Lab Private Ltd | 104,862 | 0.08% | $245,000 | 0.06% | +45,367 | 13F |
Read more
Share of all is the fund's part of all the shares the funds reported. Change is shares against the fund's 13F for the quarter before. A 13F lists a manager's long positions in US-listed shares at the quarter's end. What is a 13F?Options the funds reported on RBBN
| Fund | Option | Shares under the options | Value of those shares | Quarter ended | Filing |
|---|---|---|---|---|---|
| Citadel Advisors | Calls | 27,700 | $64,818 | 30 June 2026 | 13F |
Read more
They are not counted in the holdings above. A put gains when the stock falls, a call when it rises, and a fund may hold either to hedge.Schedule 13D and 13G filed on the name, last twelve months
None in the last twelve months: no holder crossed 5%, changed materially, or filed an annual 13G in the window.
Fails to deliver
| Settlement date | Shares failed | Price | File |
|---|---|---|---|
| 26 August 2026 | 1,536 | $2.06 | SEC |
| 19 August 2026 | 16 | $2.04 | SEC |
| 6 August 2026 | 2,769 | $2.15 | SEC |
| 5 August 2026 | 23 | $2.17 | SEC |
| 23 July 2026 | 1,531 | $2.16 | SEC |
| 21 July 2026 | 2,158 | $2.11 | SEC |
| 20 July 2026 | 6 | $2.20 | SEC |