Ribbon Communications Inc. RBBN
CIK 0001708055 · CUSIP 762544104
Quarter-end disclosures, not live holdings.
Top 20 institutions
Weight means this stock's share of the manager's own portfolio.
| # | Manager | Value | Manager weight | Change vs prior | Source | |
|---|---|---|---|---|---|---|
| 01 | JPMORGAN CHASE & CO CIK 19617 · View history | $208.67M 52,037,577 shares | 0.01% | -1.30K(0.00%)Reduced | SEC filing ↗ Aug 12, 2025 | ▾ |
| 02 | NEUBERGER BERMAN GROUP LLC CIK 1465109 · Amended · View history | $69.23M 18,461,960 shares | 0.05% | +150.43K(+0.80%)Added | SEC filing ↗ Oct 27, 2026 | ▾ |
| 03 | PARADIGM CAPITAL MANAGEMENT INC/NY CIK 1037792 · View history | $35.08M 8,748,200 shares | 1.71% | -763.00K(-8.00%)Reduced | SEC filing ↗ Aug 14, 2025 | ▾ |
| 04 | BlackRock, Inc. CIK 2012383 · View history | $31.03M 7,738,835 shares | 0.00% | -50.07K(-0.60%)Reduced | SEC filing ↗ Aug 12, 2025 | ▾ |
| 05 | VANGUARD GROUP INC CIK 102909 · View history | $30.17M 7,524,387 shares | 0.00% | +66.92K(+0.90%)Added | SEC filing ↗ Aug 11, 2025 | ▾ |
| 06 | DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history | $26.33M 6,565,166 shares | 0.01% | +191.83K(+3.00%)Added | SEC filing ↗ Aug 12, 2025 | ▾ |
| 07 | ROYCE & ASSOCIATES LP CIK 906304 · View history | $14.73M 3,672,435 shares | 0.15% | +580.37K(+18.80%)Added | SEC filing ↗ Aug 11, 2025 | ▾ |
| 08 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $9.24M 2,303,256 shares | 0.00% | +169.40K(+7.90%)Added | SEC filing ↗ Aug 8, 2025 | ▾ |
| 09 | STATE STREET CORP CIK 93751 · View history | $8.39M 2,092,819 shares | 0.00% | +90.20K(+4.50%)Added | SEC filing ↗ Aug 14, 2025 | ▾ |
| 10 | Connor, Clark & Lunn Investment Management Ltd. CIK 1596800 · View history | $5.92M 1,476,053 shares | 0.02% | +286.80K(+24.10%)Added | SEC filing ↗ Aug 7, 2025 | ▾ |
| 11 | FIRST WILSHIRE SECURITIES MANAGEMENT INC CIK 732847 · View history | $5.34M 1,331,200 shares | 1.45% | -6.01K(-0.40%)Reduced | SEC filing ↗ Aug 14, 2025 | ▾ |
| 12 | FRANKLIN RESOURCES INC CIK 38777 · View history | $4.37M 1,090,798 shares | 0.00% | -129.88K(-10.60%)Reduced | SEC filing ↗ Aug 12, 2025 | ▾ |
| 13 | First Eagle Investment Management, LLC CIK 1325447 · View history | $4.11M 1,025,914 shares | 0.01% | +145.16K(+16.50%)Added | SEC filing ↗ Aug 6, 2025 | ▾ |
| 14 | NORTHERN TRUST CORP CIK 73124 · View history | $4.01M 998,939 shares | 0.00% | +192.00K(+23.80%)Added | SEC filing ↗ Aug 13, 2025 | ▾ |
| 15 | HERALD INVESTMENT MANAGEMENT Ltd CIK 1512022 · View history | $3.66M 912,869 shares | 0.54% | 0(0.00%)Unchanged | SEC filing ↗ Jul 22, 2025 | ▾ |
| 16 | MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history | $3.33M 830,148 shares | 0.00% | +585.05K(+238.70%)Added | SEC filing ↗ Aug 14, 2025 | ▾ |
| 17 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · View history | $3.07M 766,198 shares | 0.00% | +18.42K(+2.50%)Added | SEC filing ↗ Aug 12, 2025 | ▾ |
| 18 | VICTORY CAPITAL MANAGEMENT INC CIK 1040188 · View history | $1.97M 491,177 shares | 0.00% | -114.13K(-18.90%)Reduced | SEC filing ↗ Aug 13, 2025 | ▾ |
| 19 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP CIK 1164508 · View history | $1.94M 483,170 shares | 0.00% | -73.15K(-13.10%)Reduced | SEC filing ↗ Aug 13, 2025 | ▾ |
| 20 | JACOBS LEVY EQUITY MANAGEMENT, INC CIK 884414 · View history | $1.73M 432,097 shares | 0.01% | +16.83K(+4.10%)Added | SEC filing ↗ Aug 14, 2025 | ▾ |
Showing 20 / 146 institutions. The complete set is available through the API.
Coverage & totals by quarter
Reporting institutions by quarter
Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.
Explore all 146 reporting institutions.
This page includes 20 of 146 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.
- Download CSV
- Earlier quarters
- Advanced screening & filtering
- API & AI access
＋ New accounts get free API credits to explore data beyond ownership filings.
For AI agents & developers
The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 146 reporting institutions; totals use the complete disclosed data.
Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP / CLI.
MCP https://api.akkrudata.ai/mcp
akkru_institutional_holdings
{"action":"holders","cusip":"762544104","quarter":"2025Q2","type":"positions","page_size":100}Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.
- MCP endpoint
- https://api.akkrudata.ai/mcp
- API / MCP / CLI documentation
- /documents
- llms.txt
- /llms.txt
Sources, coverage & how to read this data
Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.