Ribbon Communications Inc. (RBBN) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

176,620,000Shares Outstanding

130,283,694Shares held by institutions

$284,018,453Value of institutional holdings

73.76%Institutional ownership %

-26.91%Shares Changed QoQ

146No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Ribbon Communications Inc. (NASDAQ:RBBN) showed up in the 13F filings of 146 institutional investors as of December 2025.

These investors collectively held 73.3% of Ribbon Communications's outstanding shares in December 2025, down from 102.0% in September 2025.
They decreased total shares held in Ribbon Communications by -27.23% from last quarter, and the number of investors in RBBN increased 10.61% annually.
Among the 146 funds, 77 bought more Ribbon Communications shares, 50 sold down, and 19 held their ground.
Institutional investors collectively held 129.49Mn shares in Ribbon Communications as of December 2025, down by 48.45Mn shares quarter on quarter, and up 2.47Mn shares year over year.
Jpmorgan Chase & Co leads ownership in RBBN with 52.04Mn shares as of December 31, 2025, equal to 29.46% of outstanding shares.
The biggest buyers of Ribbon Communications for the quarter ending December 2025 included Goldman Sachs Group Inc (1.15Mn), ACADIAN ASSET MANAGEMENT LLC (726.57K), KENNEDY CAPITAL MANAGEMENT LLC (710.7K), JACOBS LEVY EQUITY MANAGEMENT, INC (418.97K), D. E. Shaw & Co., Inc. (390.95K).
Top sellers of RBBN stock for the quarter ending December 2025 included Jpmorgan Chase & Co (50.29Mn), Neuberger Berman Group LLC (822.94K), Franklin Resources Inc (526.46K), PARADIGM CAPITAL MANAGEMENT INC/NY (425.9K), WHITE PINE CAPITAL LLC (287.45K).
Per Business Quant data, the top 10 holders of Ribbon Communications for the quarter ending December 2025 are Jpmorgan Chase & Co (52.04Mn), Neuberger Berman Group LLC (17.43Mn), PARADIGM CAPITAL MANAGEMENT INC/NY (8.32Mn), VANGUARD GROUP INC (7.83Mn), BlackRock, Inc. (7.67Mn), DIMENSIONAL FUND ADVISORS LP (6.48Mn), ROYCE & ASSOCIATES LP (4.61Mn), GEODE CAPITAL MANAGEMENT, LLC (2.3Mn), State Street Corp (2.1Mn), Connor, Clark & Lunn Investment Management Ltd. (2.0Mn).

146 Institutional Holders

130,283,694 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
Jpmorgan Chase & Co	31 Dec, 2025	52,037,577	-50,288,073	-49.15%	$149,868,221.00
Neuberger Berman Group LLC	31 Dec, 2025	17,431,102	-822,943	-4.51%	$46,032,220.00
PARADIGM CAPITAL MANAGEMENT INC/NY	31 Dec, 2025	8,323,298	-425,902	-4.87%	$23,971,098.00
VANGUARD GROUP INC	31 Dec, 2025	7,833,009	141,939	1.85%	$22,559,066.00
BlackRock, Inc.	31 Dec, 2025	7,665,925	-32,880	-0.43%	$22,077,863.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	6,475,125	-70,410	-1.08%	$18,649,429.00
ROYCE & ASSOCIATES LP	31 Dec, 2025	4,614,741	309,271	7.18%	$13,290,454.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	2,302,573	-7,878	-0.34%	$6,632,567.00
State Street Corp	31 Dec, 2025	2,099,793	5,280	0.25%	$6,047,404.00
Connor, Clark & Lunn Investment Management Ltd.	31 Dec, 2025	1,995,845	130,676	7.01%	$5,748,034.00
Goldman Sachs Group Inc	31 Dec, 2025	1,574,986	1,150,827	271.32%	$4,535,960.00
FIRST WILSHIRE SECURITIES MANAGEMENT INC	31 Dec, 2025	1,267,586	-37,772	-2.89%	$3,650,648.00
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	31 Dec, 2025	1,029,716	65,270	6.77%	$2,965,582.00
D. E. Shaw & Co., Inc.	31 Dec, 2025	979,841	390,949	66.39%	$2,821,942.00
Northern Trust Corp	31 Dec, 2025	922,554	-75,557	-7.57%	$2,656,956.00
JACOBS LEVY EQUITY MANAGEMENT, INC	31 Dec, 2025	890,168	418,967	88.91%	$2,563,684.00
First Eagle Investment Management, LLC	31 Dec, 2025	862,528	-171,386	-16.58%	$2,484,081.00
HERALD INVESTMENT MANAGEMENT Ltd	31 Dec, 2025	800,000	-112,869	-12.36%	$2,304,000.00
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	31 Dec, 2025	769,074	-413	-0.05%	$2,214,933.00
ACADIAN ASSET MANAGEMENT LLC	31 Dec, 2025	761,165	726,573	2,100.41%	$2,189.00

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