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Ribbon Communications
RBBN

Overview Fund Activity

143 hedge funds and large institutions have $508M invested in Ribbon Communications in 2025 Q2 according to their latest regulatory filings, with 22 funds opening new positions, 58 increasing their positions, 35 reducing their positions, and 20 closing their positions.

Holders
143
Holders Change
–
Holders Change %
0%
% of All Funds
1.92%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
22
Increased
58
Reduced
35
Closed
20
Calls
$818K
Puts
–
Net Calls
+$818K
Net Calls Change
-$148K

Top Buyers

1
Millennium Management
1
Millennium Management
New York
$3.33M
2
RA
2
Royce & Associates
New York
$14.7M
3
Connor, Clark & Lunn Investment Management (CC&L)
3
Connor, Clark & Lunn Investment Management (CC&L)
British Columbia, Canada
$5.92M
4
Northern Trust
4
Northern Trust
Illinois
$4.01M
5
Dimensional Fund Advisors
5
Dimensional Fund Advisors
Texas
$26.3M

Top Sellers

1
PCMI
1
Paradigm Capital Management Inc
New York
$35.1M
2
HIM
2
Hillsdale Investment Management
Ontario, Canada
$0
3
Bank of America
3
Bank of America
North Carolina
$420K
4
II
4
Inspire Investing
Idaho
$0
5
BCM
5
Bridgeway Capital Management
Texas
$0
Name Market Value Shares Shares
Change 		Shares
Change %
HSBC Holdings
76
HSBC Holdings
United Kingdom
$131K 32,599 -1,507 -4%
SPS
77
Susquehanna Portfolio Strategies
Pennsylvania
$121K 30,173 +30,173 New
Envestnet Asset Management
78
Envestnet Asset Management
Illinois
$120K 29,892 -2,221 -7%
ASRS
79
Arizona State Retirement System
Arizona
$113K 28,199 +559 +2%
Renaissance Technologies
80
Renaissance Technologies
New York
$110K 27,500 -117,312 -81%
HighTower Advisors
81
HighTower Advisors
Illinois
$101K 25,147 +56 +0.2%
Creative Planning
82
Creative Planning
Kansas
$98.7K 24,621 +9,682 +65%
EFS
83
Essex Financial Services
Connecticut
$96.5K 24,076 +21 +0.1%
PCM
84
Prelude Capital Management
New York
$95.2K 23,738 -9,980 -30%
New York State Common Retirement Fund
85
New York State Common Retirement Fund
New York
$90K 22,549 – –
PFSRSONJ
86
Police & Firemen's Retirement System of New Jersey
New Jersey
$85.2K 21,239 – –
Two Sigma Investments
87
Two Sigma Investments
New York
$83.5K 20,811 +20,811 New
VIP
88
Vista Investment Partners
Oklahoma
$81.8K 20,400 – –
Simplex Trading
89
Simplex Trading
Illinois
$79K 19,880 +18,687 +1,566%
ProShare Advisors
90
ProShare Advisors
Maryland
$77.1K 19,236 -581 -3%
IIM
91
Ironwood Investment Management
Massachusetts
$74.8K 18,645 -573 -3%
SO
92
STRS Ohio
Ohio
$70.6K 17,600 – –
PCM
93
Polymer Capital Management
New York
$69.8K 17,417 -42,150 -71%
JF
94
Jump Financial
Illinois
$67.3K 16,790 +16,790 New
KK
95
KLP Kapitalforvaltning
Norway
$62.2K 15,500 – –
TIAA Trust, National Association
96
TIAA Trust, National Association
North Carolina
$60.2K 15,000 +15,000 New
AIP
97
Almanack Investment Partners
Pennsylvania
$58.3K 14,550 +14,550 New
NW
98
NewEdge Wealth
Pennsylvania
$57K 15,069 -61 -0.4%
FBT
99
First Bank & Trust
South Dakota
$55K 13,725 -15,537 -53%
EGM
100
Engineers Gate Manager
New York
$52.8K 13,176 +13,176 New
2 3
4
5 6