Ribbon Communications RBBN Institutional Ownership

NASDAQ RBBN

$1.76 -0.03 (-1.68%)

At close: Sep 30, 2026 · 4:00 PM EDT

Institutions by Trading Activity

162 Institutions

Increased 89 54.9%

Unchanged 32 19.8%

Reduced 41 25.3%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

72.84%

▼-0.74 pp QoQ

Shares Held by Institutions

129.11Mn

of 177.25Mn outstanding

▲+0.34% QoQ

Shares Outstanding

177.25Mn

48.14Mn held outside 13F filers

Institutional Investors

162

filed 13F for Jun 2026

▲+12 vs prior quarter

Net Shares Added (QoQ)

+434.76K

accumulated since last quarter

Value of Holdings

$227.24Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Ribbon Communications Inc. (NASDAQ:RBBN) appears in 162 institutional 13F filings for the quarter ending June 2026.

These investors held 72.8% of outstanding shares in June 2026, down from 73.6% in March 2026.
They increased total shares held in Ribbon Communications by 0.34% from the prior quarter, while the number of investors in RBBN increased 11.72% year over year.
Of these 162 holders, 89 added to their stakes in Ribbon Communications, 41 trimmed positions, and 32 made no changes.
Altogether, these fund groups held 129.11Mn shares in RBBN by June 2026, up by 434.76K shares quarter on quarter, and up 1.25Mn shares year over year.
Jpmorgan Chase & Co holds the largest position in RBBN at 52.04Mn shares as of June 30, 2026, or 29.36% of shares outstanding.
Top purchasers of RBBN stock for the quarter ending June 2026 included Neuberger Berman Group LLC (949.08K), Sixth Street Partners Management Company, L.P. (800.16K), CITADEL ADVISORS LLC (666.21K), BlackRock, Inc. (422.58K), ACADIAN ASSET MANAGEMENT LLC (329.74K).
The largest sellers of Ribbon Communications for the quarter ending June 2026 were PARADIGM CAPITAL MANAGEMENT INC/NY (5.0Mn), Goldman Sachs Group Inc (329.32K), VANGUARD CAPITAL MANAGEMENT LLC (290.83K), GSA CAPITAL PARTNERS LLP (118.71K), JACOBS LEVY EQUITY MANAGEMENT, INC (103.22K).
Ribbon Communications's 10 largest shareholders as of June 2026 include Jpmorgan Chase & Co (52.04Mn), Neuberger Berman Group LLC (18.31Mn), BlackRock, Inc. (7.15Mn), DIMENSIONAL FUND ADVISORS LP (6.29Mn), ROYCE & ASSOCIATES LP (5.09Mn), VANGUARD CAPITAL MANAGEMENT LLC (3.93Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (3.51Mn), PARADIGM CAPITAL MANAGEMENT INC/NY (3.04Mn), GEODE CAPITAL MANAGEMENT, LLC (2.49Mn), Connor, Clark & Lunn Investment Management Ltd. (2.21Mn) per Business Quant data.

Form 13F Holdings

162 Institutional Holders

Report period 30 Jun, 2026

Total shares held 129.11Mn

Of outstanding 72.84%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	Jpmorgan Chase & Co	0000019617	52,042,936	29.36%	▼100	0.00%	$115.54Mn
2	Neuberger Berman Group LLC	0001465109	18,311,073	10.33%	▲949,085	+5.47%	$38.67Mn
3	BlackRock, Inc.	0002012383	7,146,590	4.03%	▲422,583	+6.28%	$16.72Mn
4	DIMENSIONAL FUND ADVISORS LP	0000354204	6,286,323	3.55%	▼64,787	-1.02%	$14.71Mn
5	ROYCE & ASSOCIATES LP	0000906304	5,090,927	2.87%	▲211,186	+4.33%	$11.91Mn
6	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	3,925,626	2.21%	▼290,833	-6.90%	$9.19Mn
7	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	3,513,067	1.98%	▲177,402	+5.32%	$8.22Mn
8	PARADIGM CAPITAL MANAGEMENT INC/NY	0001037792	3,036,398	1.71%	▼4,999,937	-62.22%	$7.11Mn
9	GEODE CAPITAL MANAGEMENT, LLC	0001214717	2,485,064	1.40%	▲70,504	+2.92%	$5.82Mn
10	Connor, Clark & Lunn Investment Management Ltd.	0001596800	2,213,134	1.25%	▲123,412	+5.91%	$5.18Mn
11	State Street Corp	0000093751	1,930,153	1.09%	▲20,126	+1.05%	$4.52Mn
12	D. E. Shaw & Co., Inc.	0001009207	1,790,375	1.01%	▲251,903	+16.37%	$4.19Mn
13	ACADIAN ASSET MANAGEMENT LLC	0000916542	1,768,227	1.00%	▲329,737	+22.92%	$4.13K
14	AQR CAPITAL MANAGEMENT LLC	0001167557	1,409,795	0.80%	▲152,448	+12.12%	$3.30Mn
15	FIRST WILSHIRE SECURITIES MANAGEMENT INC	0000732847	1,404,493	0.79%	▼2,685	-0.19%	$3.29Mn
16	CITADEL ADVISORS LLC	0001423053	1,241,200	0.70%	▲666,211	+115.87%	$2.90Mn
17	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	0001164508	1,215,230	0.69%	▼1,646	-0.14%	$2.84Mn
18	MARSHALL WACE, LLP	0001318757	814,132	0.46%	▲44,345	+5.76%	$1.91Mn
19	Sixth Street Partners Management Company, L.P.	0001812095	800,159	0.45%	▲800,159	0.00%	$1.87Mn
19	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0000884546	800,159	0.45%	▲91,996	+12.99%	$1.87Mn

Showing 1 to 20 of 162 holders