Institutional HoldersBeta
Who holds a company, from every 13F filed for the quarter, one row per filer exactly as filed, against the latest share count the company reported.
Held by 13F filers
128,339,986
71.8% of shares outstanding
Holders
160
+10 vs 2026-03-31 · 23 new, 13 exited
Value
$289.9M
shares -0.7% vs prior quarter
Share classes (cover page of the 10-Q filed 2026-07-31, as of 2026-07-28)
| Class | Listed | Shares outstanding | Held by 13F filers | % of class | Holders | CUSIP |
|---|---|---|---|---|---|---|
| Common stock | RBBN · NASDAQ | 178,823,352 | 128,339,986 | 71.8% | 160 | 762544104 |
Each class is compared with its own share count; classes are not added together. A class that is not exchange-listed cannot be held by 13F filers.
Top holders (160 of 160 · 762544104)
change vs 2026-03-31| # | Filer | Shares | % of class | Value | Change |
|---|---|---|---|---|---|
| 1 | JPMORGAN CHASE & CO | 52,042,936 | 29.10% | $115.5M | -100 (-0.0%) |
| 2 | NEUBERGER BERMAN GROUP LLC | 18,311,073 | 10.24% | $38.7M | +949,085 (+5.5%) |
| 3 | BlackRock, Inc. | 7,146,590 | 4.00% | $16.7M | +422,583 (+6.3%) |
| 4 | DIMENSIONAL FUND ADVISORS LP | 6,286,323 | 3.52% | $14.7M | -64,787 (-1.0%) |
| 5 | ROYCE & ASSOCIATES LP | 5,090,927 | 2.85% | $11.9M | +211,186 (+4.3%) |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | 3,925,626 | 2.20% | $9.2M | -290,833 (-6.9%) |
| 7 | VANGUARD PORTFOLIO MANAGEMENT LLC | 3,513,067 | 1.96% | $8.2M | +177,402 (+5.3%) |
| 8 | PARADIGM CAPITAL MANAGEMENT INC/NY | 3,036,398 | 1.70% | $7.1M | -4,999,937 (-62.2%) |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | 2,485,064 | 1.39% | $5.8M | +70,504 (+2.9%) |
| 10 | Connor, Clark & Lunn Investment Management Ltd. | 2,213,134 | 1.24% | $5.2M | +123,412 (+5.9%) |
| 11 | STATE STREET CORP | 1,930,153 | 1.08% | $4.5M | +20,126 (+1.1%) |
| 12 | D. E. Shaw & Co., Inc. | 1,790,375 | 1.00% | $4.2M | +251,903 (+16.4%) |
| 13 | ACADIAN ASSET MANAGEMENT LLC | 1,768,227 | 0.99% | $4.1M | +329,737 (+22.9%) |
| 14 | AQR CAPITAL MANAGEMENT LLC | 1,409,795 | 0.79% | $3.3M | +152,448 (+12.1%) |
| 15 | FIRST WILSHIRE SECURITIES MANAGEMENT INC | 1,404,493 | 0.79% | $3.3M | -2,685 (-0.2%) |
| 16 | CITADEL ADVISORS LLC | 1,241,200 | 0.69% | $2.9M | +666,211 (+115.9%) |
| 17 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 1,215,230 | 0.68% | $2.8M | -1,646 (-0.1%) |
| 18 | MARSHALL WACE, LLP | 814,132 | 0.46% | $1.9M | +44,345 (+5.8%) |
| 19 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 800,159 | 0.45% | $1.9M | +91,996 (+13.0%) |
| 20 | NORTHERN TRUST CORP | 749,823 | 0.42% | $1.8M | +43,965 (+6.2%) |
| 21 | MILLENNIUM MANAGEMENT LLC | 698,458 | 0.39% | $1.6M | +207,138 (+42.2%) |
| 22 | VANGUARD FIDUCIARY TRUST CO | 612,773 | 0.34% | $1.4M | +25,344 (+4.3%) |
| 23 | JACOBS LEVY EQUITY MANAGEMENT, INC | 582,093 | 0.33% | $1.4M | -103,217 (-15.1%) |
| 24 | VICTORY CAPITAL MANAGEMENT INC | 456,421 | 0.26% | $1.1M | +34,070 (+8.1%) |
| 25 | Silverberg Bernstein Capital Management LLC | 418,823 | 0.23% | $980K | -19,300 (-4.4%) |
| 26 | GOLDMAN SACHS GROUP INC | 415,430 | 0.23% | $972K | -329,315 (-44.2%) |
| 27 | Russell Investments Group, Ltd. | 385,226 | 0.22% | $901K | +33,353 (+9.5%) |
| 28 | Bank of New York Mellon Corp | 379,800 | 0.21% | $889K | +2,436 (+0.6%) |
| 29 | MORGAN STANLEY | 379,790 | 0.21% | $889K | -43,675 (-10.3%) |
| 30 | XTX Topco Ltd | 323,307 | 0.18% | $757K | +162,365 (+100.9%) |
| 31 | BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 303,599 | 0.17% | $710K | NEW |
| 32 | Pacific Ridge Capital Partners, LLC | 286,213 | 0.16% | $670K | +40,037 (+16.3%) |
| 33 | COMMONWEALTH EQUITY SERVICES, LLC | 284,723 | 0.16% | $666K | — |
| 34 | VOYA INVESTMENT MANAGEMENT LLC | 214,879 | 0.12% | $503K | +7,180 (+3.5%) |
| 35 | AMERICAN CENTURY COMPANIES INC | 211,076 | 0.12% | $494K | -1,287 (-0.6%) |
| 36 | Squarepoint Ops LLC | 191,402 | 0.11% | $448K | NEW |
| 37 | BANK OF AMERICA CORP /DE/ | 188,437 | 0.11% | $441K | -19,793 (-9.5%) |
| 38 | Nuveen, LLC | 177,201 | 0.10% | $415K | — |
| 39 | GSA CAPITAL PARTNERS LLP | 174,044 | 0.10% | $407K | -118,712 (-40.5%) |
| 40 | EntryPoint Capital, LLC | 172,880 | 0.10% | $405K | +32,576 (+23.2%) |
| 41 | ExodusPoint Capital Management, LP | 172,615 | 0.10% | $404K | -24,293 (-12.3%) |
| 42 | UBS Group AG | 165,372 | 0.09% | $387K | -27,478 (-14.2%) |
| 43 | Invesco Ltd. | 162,669 | 0.09% | $381K | -19,174 (-10.5%) |
| 44 | WINTON GROUP Ltd | 149,404 | 0.08% | $350K | +99,289 (+198.1%) |
| 45 | ALLIANCEBERNSTEIN L.P. | 138,173 | 0.08% | $293K | +18,024 (+15.0%) |
| 46 | Qube Research & Technologies Ltd | 137,899 | 0.08% | $323K | NEW |
| 47 | LSV ASSET MANAGEMENT | 135,800 | 0.08% | $318K | — |
| 48 | Vanguard Global Advisers, LLC | 126,258 | 0.07% | $295K | — |
| 49 | RHUMBLINE ADVISERS | 126,186 | 0.07% | $295K | -2,219 (-1.7%) |
| 50 | Dynamic Technology Lab Private Ltd | 104,862 | 0.06% | $245K | +45,367 (+76.3%) |
| 51 | AMERIPRISE FINANCIAL INC | 103,387 | 0.06% | $242K | -4,097 (-3.8%) |
| 52 | TWO SIGMA INVESTMENTS, LP | 102,187 | 0.06% | $239K | NEW |
| 53 | Creative Planning | 100,626 | 0.06% | $235K | +35,734 (+55.1%) |
| 54 | BARCLAYS PLC | 94,499 | 0.05% | $221K | -7,334 (-7.2%) |
| 55 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | 94,418 | 0.05% | $221K | +6,187 (+7.0%) |
| 56 | Empowered Funds, LLC | 94,418 | 0.05% | $221K | +6,187 (+7.0%) |
| 57 | FRANKLIN RESOURCES INC | 92,548 | 0.05% | $217K | -16,221 (-14.9%) |
| 58 | Hillsdale Investment Management Inc. | 91,013 | 0.05% | $213K | NEW |
| 59 | CITIGROUP INC | 87,907 | 0.05% | $206K | +51,340 (+140.4%) |
| 60 | PRICE T ROWE ASSOCIATES INC /MD/ | 85,744 | 0.05% | $201K | +15,922 (+22.8%) |
| 61 | PRUDENTIAL FINANCIAL INC | 82,938 | 0.05% | $194K | +68,300 (+466.6%) |
| 62 | DEUTSCHE BANK AG\ | 81,935 | 0.05% | $192K | +56,553 (+222.8%) |
| 63 | WELLS FARGO & COMPANY/MN | 81,508 | 0.05% | $191K | +44,070 (+117.7%) |
| 64 | SEI INVESTMENTS CO | 78,348 | 0.04% | $183K | -3,358 (-4.1%) |
| 65 | Assenagon Asset Management S.A. | 75,854 | 0.04% | $177K | +37,927 (+100.0%) |
| 66 | SIMPLEX TRADING, LLC | 73,875 | 0.04% | $173K | NEW |
| 67 | HighMark Wealth Management LLC | 69,000 | 0.04% | $161K | NEW |
| 68 | PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO | 60,645 | 0.03% | $142K | — |
| 69 | Virtu Financial LLC | 57,900 | 0.03% | $135K | +32,194 (+125.2%) |
| 70 | MetLife Investment Management, LLC | 53,013 | 0.03% | $124K | +13,553 (+34.3%) |
| 71 | PRELUDE CAPITAL MANAGEMENT, LLC | 52,138 | 0.03% | $122K | +3,100 (+6.3%) |
| 72 | Vident Advisory, LLC | 50,192 | 0.03% | $117K | — |
| 73 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 47,175 | 0.03% | $110K | -5,056 (-9.7%) |
| 74 | SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC | 46,661 | 0.03% | $109K | -7,876 (-14.4%) |
| 75 | Mariner, LLC | 43,328 | 0.02% | $101K | +20,235 (+87.6%) |
| 76 | MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 43,168 | 0.02% | $101K | -1,485 (-3.3%) |
| 77 | STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM | 37,543 | 0.02% | $88K | — |
| 78 | Worth Venture Partners, LLC | 35,000 | 0.02% | $82K | NEW |
| 79 | SG Americas Securities, LLC | 34,798 | 0.02% | $81K | +2,637 (+8.2%) |
| 80 | Focus Partners Wealth | 32,726 | 0.02% | $77K | +1,314 (+4.2%) |
| 81 | Polymer Capital Management (US) LLC | 28,355 | 0.02% | $66K | -3,522 (-11.0%) |
| 82 | ENVESTNET ASSET MANAGEMENT INC | 27,693 | 0.02% | $65K | +1,216 (+4.6%) |
| 83 | HSBC HOLDINGS PLC | 26,991 | 0.02% | $62K | NEW |
| 84 | Brevan Howard Capital Management LP | 26,154 | 0.01% | $61K | NEW |
| 85 | Abacus Wealth Partners, LLC | 26,091 | 0.01% | $61K | — |
| 86 | MANUFACTURERS LIFE INSURANCE COMPANY, THE | 25,567 | 0.01% | $60K | -2,137 (-7.7%) |
| 87 | State of Alaska, Department of Revenue | 25,390 | 0.01% | $59K | — |
| 88 | Essex Financial Services, Inc. | 24,810 | 0.01% | $58K | +149 (+0.6%) |
| 89 | Police & Firemen's Retirement System of New Jersey | 24,692 | 0.01% | $58K | — |
| 90 | Susquehanna Portfolio Strategies, LLC | 24,339 | 0.01% | $57K | -68,851 (-73.9%) |
| 91 | Global Retirement Partners, LLC | 24,301 | 0.01% | $57K | NEW |
| 92 | NEW YORK STATE COMMON RETIREMENT FUND | 22,549 | 0.01% | $53K | — |
| 93 | JONES FINANCIAL COMPANIES LLLP | 22,484 | 0.01% | $49K | +3,366 (+17.6%) |
| 94 | MACKENZIE FINANCIAL CORP | 22,362 | 0.01% | $52K | NEW |
| 95 | JANE STREET GROUP, LLC | 21,881 | 0.01% | $51K | NEW |
| 96 | INTECH INVESTMENT MANAGEMENT LLC | 20,740 | 0.01% | $49K | -1,200 (-5.5%) |
| 97 | IEQ CAPITAL, LLC | 20,436 | 0.01% | $48K | +6,307 (+44.6%) |
| 98 | VISTA INVESTMENT PARTNERS LLC | 20,400 | 0.01% | $48K | — |
| 99 | WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | 20,262 | 0.01% | $47K | +6,705 (+49.5%) |
| 100 | LPL Financial LLC | 18,294 | 0.01% | $43K | +2,693 (+17.3%) |
| 101 | IRONWOOD INVESTMENT MANAGEMENT LLC | 18,030 | 0.01% | $42K | -36 (-0.2%) |
| 102 | STRS OHIO | 17,600 | 0.01% | $41K | — |
| 103 | Balyasny Asset Management L.P. | 16,288 | 0.01% | $38K | NEW |
| 104 | NewEdge Wealth, LLC | 16,260 | 0.01% | $38K | — |
| 105 | Vestmark Advisory Solutions, Inc. | 16,260 | 0.01% | $38K | — |
| 106 | ROYAL BANK OF CANADA | 14,606 | 0.01% | $35K | +8,710 (+147.7%) |
| 107 | WHITE PINE CAPITAL LLC | 13,335 | 0.01% | $31K | -13,335 (-50.0%) |
| 108 | ProShare Advisors LLC | 12,277 | 0.01% | $29K | -1,320 (-9.7%) |
| 109 | Trilogy Capital Inc. | 12,110 | 0.01% | $28K | -3,250 (-21.2%) |
| 110 | BNP PARIBAS FINANCIAL MARKETS | 11,947 | 0.01% | $28K | -8,089 (-40.4%) |
| 111 | MERCER GLOBAL ADVISORS INC /ADV | 11,794 | 0.01% | $28K | NEW |
| 112 | Tower Research Capital LLC (TRC) | 11,602 | 0.01% | $27K | +4,044 (+53.5%) |
| 113 | CANADA PENSION PLAN INVESTMENT BOARD | 11,400 | 0.01% | $27K | — |
| 114 | Ballentine Partners, LLC | 10,698 | 0.01% | $25K | +34 (+0.3%) |
| 115 | AXQ CAPITAL, LP | 10,535 | 0.01% | $25K | NEW |
| 116 | Sequoia Financial Advisors, LLC | 10,441 | 0.01% | $24K | NEW |
| 117 | Indivisible Partners | 10,257 | 0.01% | $24K | — |
| 118 | TWO SIGMA SECURITIES, LLC | 10,101 | 0.01% | $24K | -12,863 (-56.0%) |
| 119 | GRIMES & Co WEALTH MANAGEMENT, LLC | 10,000 | 0.01% | $23K | -30 (-0.3%) |
| 120 | Kathmere Capital Management, LLC | 10,000 | 0.01% | $23K | — |
| 121 | GROUP ONE TRADING LLC | 9,919 | 0.01% | $23K | +9,605 (+3058.9%) |
| 122 | Ameritas Investment Partners, Inc. | 8,663 | 0.00% | $20K | — |
| 123 | Legal & General Group Plc | 8,432 | 0.00% | $20K | — |
| 124 | OSAIC HOLDINGS, INC. | 7,577 | 0.00% | $18K | +41 (+0.5%) |
| 125 | FMR LLC | 6,856 | 0.00% | $16K | +1,635 (+31.3%) |
| 126 | FIFTH THIRD BANCORP | 4,538 | 0.00% | $11K | +2,489 (+121.5%) |
| 127 | Allworth Financial LP | 4,335 | 0.00% | $10K | +1,072 (+32.9%) |
| 128 | Arax Advisory Partners | 2,903 | 0.00% | $7K | +2,230 (+331.4%) |
| 129 | Colonial Trust Advisors | 2,000 | 0.00% | $5K | — |
| 130 | Medallion Wealth Advisors, LLC | 1,920 | 0.00% | $4K | — |
| 131 | Sterling Capital Management LLC | 1,755 | 0.00% | $4K | -1,350 (-43.5%) |
| 132 | Farther Finance Advisors, LLC | 1,692 | 0.00% | $4K | +38 (+2.3%) |
| 133 | Rockefeller Capital Management L.P. | 1,675 | 0.00% | $4K | -1,927 (-53.5%) |
| 134 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 1,547 | 0.00% | $4K | — |
| 135 | BARROW HANLEY MEWHINNEY & STRAUSS LLC | 1,516 | 0.00% | $4K | — |
| 136 | Community Bank, N.A. | 1,400 | 0.00% | $3K | — |
| 137 | Bell Investment Advisors, Inc | 1,307 | 0.00% | $3K | — |
| 138 | CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | 1,291 | 0.00% | $3K | -3,784 (-74.6%) |
| 139 | TD Waterhouse Canada Inc. | 1,048 | 0.00% | $2K | NEW |
| 140 | US BANCORP \DE\ | 875 | 0.00% | $2K | +785 (+872.2%) |
| 141 | PNC Financial Services Group, Inc. | 796 | 0.00% | $2K | +153 (+23.8%) |
| 142 | EverSource Wealth Advisors, LLC | 734 | 0.00% | $2K | +337 (+84.9%) |
| 143 | ROTHSCHILD INVESTMENT LLC | 558 | 0.00% | $1K | +120 (+27.4%) |
| 144 | SIGNATUREFD, LLC | 405 | 0.00% | $948 | — |
| 145 | MassMutual Private Wealth & Trust, FSB | 381 | 0.00% | $892 | — |
| 146 | Essential Partners LLC | 291 | 0.00% | $681 | -211 (-42.0%) |
| 147 | Parkside Financial Bank & Trust | 240 | 0.00% | $562 | NEW |
| 148 | Larson Financial Group LLC | 217 | 0.00% | $508 | -28 (-11.4%) |
| 149 | Rialto Wealth Management, LLC | 184 | 0.00% | $431 | NEW |
| 150 | True Wealth Design, LLC | 158 | 0.00% | $370 | +35 (+28.5%) |
| 151 | SJS Investment Consulting Inc. | 130 | 0.00% | $305 | +115 (+766.7%) |
| 152 | IFP Advisors, Inc | 128 | 0.00% | $300 | -103 (-44.6%) |
| 153 | CoreCap Advisors, LLC | 80 | 0.00% | $187 | — |
| 154 | Basecamp Wealth Advisors LLC | 19 | 0.00% | $44 | +17 (+850.0%) |
| 155 | Clearstead Advisors, LLC | 18 | 0.00% | $43 | NEW |
| 156 | TFC Financial Management, Inc. | 12 | 0.00% | $29 | — |
| 157 | Transamerica Financial Advisors, LLC | 12 | 0.00% | $28 | NEW |
| 158 | Caitong International Asset Management Co., Ltd | 7 | 0.00% | $16 | +4 (+133.3%) |
| 159 | JPL Wealth Management, LLC | 4 | 0.00% | $10 | NEW |
| 160 | SBI Securities Co., Ltd. | 1 | 0.00% | $2 | -25 (-96.2%) |
Exited since 2026-03-31 (13 filers; largest 13 shown)
| OP Asset Management Ltd | −206,802 |
| Engineers Gate Manager LP | −139,962 |
| HERALD INVESTMENT MANAGEMENT Ltd | −100,000 |
| State of Wyoming | −54,933 |
| Schonfeld Strategic Advisors LLC | −21,784 |
| SEVEN MILE ADVISORY | −15,976 |
| NINE MASTS CAPITAL Ltd | −14,377 |
| CWM, LLC | −12,399 |
| Y-Intercept (Hong Kong) Ltd | −12,356 |
| MAI Capital Management | −641 |
| Root Financial Partners, LLC | −164 |
| Wealth Preservation Advisors, LLC | −50 |
| Kilter Group LLC | −1 |
Large holders from 13D/13G (latest per reporting person, last 2 years)
Filed when a holder crosses 5% or changes materially, so often more current than the quarter-end 13F. Percentages are the filer's own, against the share count they used.
| Reporting person | Form | Filed | Event | Shares | % of class |
|---|---|---|---|---|---|
| PARADIGM CAPITAL MANAGEMENT INC/NY | SCHEDULE 13G/A | 2025-08-14 | 2025-06-30 | 8,748,200 | 5% |
Source: SEC Form 13F-HR information tables for the quarter ending 2026-06-30 (filed within 45 days of quarter end; amendments applied; values normalised to dollars), the share count from the company's latest 10-K/10-Q XBRL cover page, and Schedule 13D/13G filings. Each row is a legal 13F filer as filed — related entities (e.g. Vanguard's advisers) are not merged. Retail brokerage accounts are not reported on 13F, so the remainder is mostly retail and insiders.