Company · Ownership research

Ribbon Communications Inc. RBBN

CIK 0001708055 · CUSIP 762544104

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 762544104 (RBBN), not CUSIP 762544904 (RBBN), and does not merge CUSIPs.

This page lists the top 20 of 127 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	JPMORGAN CHASE & CO CIK 19617 · Amended · View history	$169.12M 52,037,577 shares	0.01%	-150(0.00%)Reduced	SEC filing ↗ Dec 26, 2024	▾
02	NEUBERGER BERMAN GROUP LLC CIK 1465109 · Amended · View history	$56.46M 18,538,406 shares	0.04%	+758.59K(+4.30%)Added	SEC filing ↗ Nov 14, 2024	▾
03	PARADIGM CAPITAL MANAGEMENT INC/NY CIK 1037792 · View history	$34.43M 10,592,700 shares	1.53%	+46.30K(+0.40%)Added	SEC filing ↗ Nov 14, 2024	▾
04	BlackRock, Inc. CIK 2012383 · View history	$24.97M 7,681,759 shares	0.00%	—	SEC filing ↗ Nov 13, 2024	▾
05	VANGUARD GROUP INC CIK 102909 · View history	$23.10M 7,106,549 shares	0.00%	+95.03K(+1.40%)Added	SEC filing ↗ Nov 13, 2024	▾
06	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$19.54M 6,012,630 shares	0.00%	+233.21K(+4.00%)Added	SEC filing ↗ Nov 7, 2024	▾
07	ROYCE & ASSOCIATES LP CIK 906304 · View history	$8.24M 2,536,278 shares	0.07%	+386.52K(+18.00%)Added	SEC filing ↗ Nov 6, 2024	▾
08	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$6.83M 2,101,366 shares	0.00%	+28.00K(+1.40%)Added	SEC filing ↗ Nov 12, 2024	▾
09	STATE STREET CORP CIK 93751 · View history	$6.17M 1,898,714 shares	0.00%	+7.96K(+0.40%)Added	SEC filing ↗ Nov 14, 2024	▾
10	FRANKLIN RESOURCES INC CIK 38777 · Amended · View history	$4.89M 1,482,698 shares	0.00%	-340.20K(-18.70%)Reduced	SEC filing ↗ Nov 27, 2024	▾
11	HERALD INVESTMENT MANAGEMENT Ltd CIK 1512022 · View history	$4.59M 1,415,869 shares	0.79%	0(0.00%)Unchanged	SEC filing ↗ Nov 13, 2024	▾
12	FIRST WILSHIRE SECURITIES MANAGEMENT INC CIK 732847 · View history	$3.80M 1,169,735 shares	1.07%	+50(0.00%)Added	SEC filing ↗ Nov 14, 2024	▾
13	BRANDES INVESTMENT PARTNERS, LP CIK 1015079 · View history	$2.63M 808,799 shares	0.03%	+55.80K(+7.40%)Added	SEC filing ↗ Nov 14, 2024	▾
14	NORTHERN TRUST CORP CIK 73124 · View history	$2.51M 771,702 shares	0.00%	+17.95K(+2.40%)Added	SEC filing ↗ Nov 13, 2024	▾
15	CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · View history	$2.48M 762,892 shares	0.00%	+13.98K(+1.90%)Added	SEC filing ↗ Nov 12, 2024	▾
16	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP CIK 1164508 · View history	$2.24M 690,070 shares	0.00%	-35.20K(-4.90%)Reduced	SEC filing ↗ Nov 14, 2024	▾
17	VICTORY CAPITAL MANAGEMENT INC CIK 1040188 · View history	$1.64M 504,503 shares	0.00%	+188.08K(+59.40%)Added	SEC filing ↗ Nov 5, 2024	▾
18	FEDERATED HERMES, INC. CIK 1056288 · View history	$1.41M 433,174 shares	0.00%	+969(+0.20%)Added	SEC filing ↗ Nov 13, 2024	▾
19	Connor, Clark & Lunn Investment Management Ltd. CIK 1596800 · View history	$1.35M 416,356 shares	0.01%	+46.48K(+12.60%)Added	SEC filing ↗ Nov 8, 2024	▾
20	JACOBS LEVY EQUITY MANAGEMENT, INC CIK 884414 · View history	$1.33M 409,376 shares	0.01%	-350.85K(-46.20%)Reduced	SEC filing ↗ Nov 14, 2024	▾

Showing 20 / 127 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

127

Cancelled or null records excluded

Disclosed shares

124,931,162

Not deduplicated across managers

Disclosed value

$402.33M

Not market cap or free float

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.

Ribbon Communications Inc. · Q3 2024

Explore all 127 reporting institutions.

This page includes 20 of 127 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.

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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.