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Disclosery

RBBN RIBBON COMMUNICATIONS INC

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COMMON STOCK (common), issuer CIK 1708055

154 managers (160 13F filers) reported a position in RBBN shares at 2026-06-30, 128,311,201 shares in all. 22 filers opened a position and 12 filers sold out during the quarter.

Managers
154
13F filers
160
New
22
Added
64
Reduced
41
Sold out
12
Shares held by filers
128,311,201

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q2 2026

Filers in the available 13F reports with a share position at 2026-06-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO52,042,936$116M0.01%-10013F-HRTimelineGroup
NEUBERGER BERMAN GROUP LLCin group NEUBERGER BERMAN GROUP LLC18,311,073$38.7M0.03%+949,08513F-HRTimelineGroup
VANGUARD GROUP INCgroup of 4 filers holding8,177,724$19.1M-88,087Timeline
BlackRock, Inc.in group BlackRock, Inc.7,146,590$16.7M<0.01%+422,58313F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP6,286,323$14.7M<0.01%-64,78713F-HRTimelineGroup
ROYCE & ASSOCIATES LP5,090,927$11.9M0.1%+211,18613F-HRTimeline
PARADIGM CAPITAL MANAGEMENT INC/NY3,036,398$7.11M0.19%-4,999,93713F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC2,485,064$5.82M<0.01%+70,50413F-HRTimelineGroup
Connor, Clark & Lunn Investment Managem…2,213,134$5.18M0.01%+123,41213F-HRTimeline
STATE STREET CORPin group STATE STREET CORP1,930,153$4.52M<0.01%+20,12613F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.1,790,375$4.19M<0.01%+251,90313F-HRTimelineGroup
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC1,768,227$4.13M<0.01%+329,73713F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC1,409,795$3.3M<0.01%+152,44813F-HRTimelineGroup
FIRST WILSHIRE SECURITIES MANAGEMENT INC1,404,493$3.29M0.68%-2,68513F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC1,241,200$2.9M<0.01%+666,21113F-HRTimelineGroup
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …1,215,230$2.84M<0.01%-1,64613F-HRTimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP814,132$1.91M<0.01%+44,34513F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co800,159$1.87M<0.01%+91,99613F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP749,823$1.75M<0.01%+43,96513F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC698,458$1.63M<0.01%+207,13813F-HRTimelineGroup
JACOBS LEVY EQUITY MANAGEMENT, INC582,093$1.36M<0.01%-103,21713F-HRTimeline
VICTORY CAPITAL MANAGEMENT INC456,421$1.07M<0.01%+34,07013F-HRTimeline
Silverberg Bernstein Capital Management…418,823$980K0.38%-19,30013F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC415,430$972K<0.01%-329,31513F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…385,226$901K<0.01%+33,35313F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp379,800$889K<0.01%+2,43613F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY379,790$889K<0.01%-43,67513F-HRTimelineGroup
XTX Topco Ltdin group XTX Topco Ltd323,307$757K0.01%+162,36513F-HRTimelineGroup
BNP PARIBAS ASSET MANAGEMENT Holding S.…in group BNP PARIBAS ASSET MANAGEMENT …303,599$710K<0.01%new13F-HRTimelineGroup
Pacific Ridge Capital Partners, LLC286,213$670K0.12%+40,03713F-HRTimeline
COMMONWEALTH EQUITY SERVICES, LLC284,723$666K<0.01%013F-HRTimeline
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC214,879$503K<0.01%+7,18013F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC211,076$494K<0.01%-1,28713F-HRTimelineGroup
Squarepoint Ops LLCin group Squarepoint Ops LLC191,402$448K<0.01%new13F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/188,437$441K<0.01%-19,79313F-HRTimelineGroup
Nuveen, LLCin group TIAA177,201$415K<0.01%013F-HRTimelineGroup
GSA CAPITAL PARTNERS LLP174,044$407K0.03%-118,71213F-HRTimeline
EntryPoint Capital, LLC172,880$405K0.1%+32,57613F-HRTimeline
ExodusPoint Capital Management, LP172,615$404K<0.01%-24,29313F-HRTimeline
UBS Group AGgroup of 2 filers holding166,919$391K-27,478Timeline
Invesco Ltd.in group Invesco Ltd.162,669$381K<0.01%-19,17413F-HRTimelineGroup
WINTON GROUP Ltdin group WINTON GROUP Ltd149,404$350K0.01%+99,28913F-HRTimelineGroup
Qube Research & Technologies Ltd137,899$323K<0.01%new13F-HRTimeline
LSV ASSET MANAGEMENT135,800$318K<0.01%013F-HRTimeline
RHUMBLINE ADVISERS126,186$295K<0.01%-2,21913F-HRTimeline
ALLIANCEBERNSTEIN L.P.138,173$293K<0.01%+18,02413F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 3 filers holding118,175$277K-81,783Timeline
Dynamic Technology Lab Private Ltd104,862$245K0.05%+45,36713F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC103,387$242K<0.01%-4,09713F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP102,187$239K<0.01%new13F-HRTimelineGroup
Creative Planningin group Creative Planning100,626$235K<0.01%+35,73413F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC94,499$221K<0.01%-7,33413F-HRTimelineGroup
BRIDGEWAY CAPITAL MANAGEMENT, LLC94,418$221K<0.01%+6,18713F-HRTimeline
Empowered Funds, LLC94,418$221K<0.01%+6,18713F-HRTimeline
FRANKLIN RESOURCES INCin group Franklin Resources92,548$217K<0.01%-16,22113F-HRTimelineGroup
Hillsdale Investment Management Inc.91,013$213K<0.01%new13F-HRTimeline
CITIGROUP INCin group CITIGROUP INC87,907$206K<0.01%+51,34013F-HRTimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/85,744$201K<0.01%+15,92213F-HRTimeline
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC82,938$194K<0.01%+68,30013F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\81,935$192K<0.01%+56,55313F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN81,508$191K<0.01%+44,07013F-HRTimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO78,348$183K<0.01%-3,35813F-HRTimelineGroup
SIMPLEX TRADING, LLC73,875$173K<0.01%new13F-HRTimeline
HighMark Wealth Management LLC69,000$161K0.05%new13F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…60,645$142K<0.01%013F-HRTimeline
Virtu Financial LLCin group Virtu Financial LLC57,900$135K<0.01%+32,19413F-HRTimelineGroup
MetLife Investment Management, LLCin group MetLife Investment Management…53,013$124K<0.01%+13,55313F-HRTimelineGroup
PRELUDE CAPITAL MANAGEMENT, LLC52,138$122K0.01%+3,10013F-HRTimeline
Vident Advisory, LLCin group Vident Advisory, LLC50,192$117K<0.01%013F-HRTimelineGroup
Mariner, LLCin group Mariner, LLC43,328$101K<0.01%+20,23513F-HRTimelineGroup
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…43,168$101K<0.01%-1,48513F-HRTimelineGroup
Assenagon Asset Management S.A.37,927$88.7K<0.01%013F-HR/ATimeline
STATE BOARD OF ADMINISTRATION OF FLORID…37,543$87.9K<0.01%013F-HRTimeline
Worth Venture Partners, LLC35,000$81.9K0.18%new13F-HRTimeline
SG Americas Securities, LLC34,798$81K<0.01%+2,63713F-HRTimeline
Focus Partners Wealthin group Focus Partners Wealth32,726$76.6K<0.01%+1,31413F-HRTimelineGroup
Polymer Capital Management (US) LLC28,355$66.4K0.01%-3,52213F-HRTimeline
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC27,693$64.8K<0.01%+1,21613F-HRTimelineGroup
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC26,991$62.5K<0.01%new13F-HRTimelineGroup
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…26,154$61.2K<0.01%new13F-HRTimelineGroup
Abacus Wealth Partners, LLC26,091$61.1K0.01%013F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …25,567$59.8K<0.01%-2,13713F-HRTimelineGroup
State of Alaska, Department of Revenue25,390$59K<0.01%013F-HRTimeline
Essex Financial Services, Inc.in group Essex Financial Services, Inc.24,810$58.1K<0.01%+14913F-HRTimelineGroup
Police & Firemen's Retirement System of…24,692$57.8K<0.01%013F-HRTimeline
Global Retirement Partners, LLC24,301$56.9K<0.01%13F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND22,549$52.8K<0.01%013F-HRTimeline
MACKENZIE FINANCIAL CORP22,362$52.3K<0.01%new13F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC21,881$51.2K<0.01%new13F-HRTimelineGroup
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP22,484$49.5K<0.01%+3,36613F-HRTimelineGroup
INTECH INVESTMENT MANAGEMENT LLC20,740$48.5K<0.01%-1,20013F-HRTimeline
IEQ CAPITAL, LLC20,436$47.8K<0.01%+6,30713F-HRTimeline
VISTA INVESTMENT PARTNERS LLC20,400$47.7K0.01%013F-HRTimeline
WEALTH ENHANCEMENT ADVISORY SERVICES, L…20,262$47K<0.01%+6,70513F-HRTimeline
LPL Financial LLC18,294$42.8K<0.01%+2,69313F-HRTimeline
IRONWOOD INVESTMENT MANAGEMENT LLC18,030$42.2K0.01%-3613F-HRTimeline
STRS OHIO17,600$41.2K<0.01%013F-HRTimeline
Balyasny Asset Management L.P.in group Balyasny Asset Management16,288$38.1K<0.01%new13F-HRTimelineGroup
Vestmark Advisory Solutions, Inc.16,260$38K<0.01%013F-HRTimeline
NewEdge Wealth, LLC16,260$38K<0.01%013F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA14,606$35K<0.01%+8,71013F-HRTimelineGroup
WHITE PINE CAPITAL LLC13,335$31.2K0.01%013F-HRTimeline
ProShare Advisors LLC12,277$28.7K<0.01%-1,32013F-HRTimeline
Trilogy Capital Inc.12,110$28.3K<0.01%-3,25013F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS11,947$28K<0.01%-8,08913F-HRTimelineGroup
MERCER GLOBAL ADVISORS INC /ADV11,794$27.6K<0.01%new13F-HR/ATimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…11,602$27.1K<0.01%+4,04413F-HRTimelineGroup
CANADA PENSION PLAN INVESTMENT BOARD11,400$26.7K<0.01%013F-HRTimeline
Ballentine Partners, LLC10,698$25K<0.01%+3413F-HRTimeline
AXQ CAPITAL, LP10,535$24.7K<0.01%new13F-HRTimeline
Sequoia Financial Advisors, LLC10,441$24.4K<0.01%new13F-HRTimeline
Indivisible Partners10,257$24K<0.01%013F-HRTimeline
TWO SIGMA SECURITIES, LLC10,101$23.6K<0.01%-12,86313F-HRTimeline
GRIMES & Co WEALTH MANAGEMENT, LLC10,000$23.4K<0.01%-3013F-HRTimeline
Kathmere Capital Management, LLC10,000$23.4K<0.01%013F-HRTimeline
GROUP ONE TRADING LLC9,919$23.2K<0.01%+9,60513F-HRTimeline
Integrated Wealth Concepts LLC9,382$22K<0.01%new13F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…8,663$20.3K<0.01%013F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc8,432$19.7K<0.01%013F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.7,577$17.7K<0.01%+4113F-HRTimelineGroup
FMR LLCin group FMR LLC6,856$16K<0.01%+1,63513F-HRTimelineGroup
FIFTH THIRD BANCORPin group FIFTH THIRD BANK, NATIONAL AS…4,538$10.6K<0.01%+2,48913F-HRTimelineGroup
Allworth Financial LP4,335$10.1K<0.01%+1,07213F-HRTimeline
Arax Advisory Partners2,903$6.79K<0.01%+2,23013F-HRTimeline
Colonial Trust Advisorsin group Colonial Trust Advisors2,000$4.68K<0.01%013F-HRTimelineGroup
Medallion Wealth Advisors, LLC1,920$4.49K<0.01%013F-HRTimeline
Sterling Capital Management LLC1,755$4.11K<0.01%-1,35013F-HRTimeline
Farther Finance Advisors, LLC1,692$3.96K<0.01%+3813F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…1,675$3.92K<0.01%-1,92713F-HRTimelineGroup
BARROW HANLEY MEWHINNEY & STRAUSS LLC1,516$3.55K<0.01%013F-HRTimeline
Community Bank, N.A.1,400$3.26K<0.01%013F-HRTimeline
Bell Investment Advisors, Inc1,307$3.06K<0.01%013F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…1,291$3.02K<0.01%-3,78413F-HR/ATimeline
TD Waterhouse Canada Inc.1,048$2.46K<0.01%new13F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\875$2.05K<0.01%+78513F-HRTimelineGroup
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…796$1.86K<0.01%+15313F-HRTimelineGroup
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…734$1.72K<0.01%+33713F-HRTimelineGroup
ROTHSCHILD INVESTMENT LLC558$1.31K<0.01%+12013F-HRTimeline
SIGNATUREFD, LLC405$948<0.01%013F-HRTimeline
MassMutual Private Wealth & Trust, FSB381$892<0.01%013F-HRTimeline
Essential Partners LLC291$681<0.01%-21113F-HRTimeline
Larson Financial Group LLC217$508<0.01%-2813F-HRTimeline
Rialto Wealth Management, LLC184$431<0.01%new13F-HRTimeline
True Wealth Design, LLC158$370<0.01%+3513F-HRTimeline
SJS Investment Consulting Inc.130$305<0.01%+11513F-HRTimeline
IFP Advisors, Inc128$300<0.01%-10313F-HRTimeline
CoreCap Advisors, LLC80$187<0.01%013F-HRTimeline
Basecamp Wealth Advisors LLC19$44<0.01%+1713F-HRTimeline
Clearstead Advisors, LLC18$43<0.01%new13F-HRTimeline
TFC Financial Management, Inc.12$29<0.01%013F-HRTimeline
Transamerica Financial Advisors, LLCin group Transamerica Financial Adviso…12$28<0.01%new13F-HRTimelineGroup
Caitong International Asset Management …7$16<0.01%+413F-HRTimeline
JPL Wealth Management, LLC4$10<0.01%new13F-HRTimeline
SBI Securities Co., Ltd.1$2<0.01%-2513F-HRTimeline