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Ribbon Communications
RBBN

Overview Fund Activity

144 hedge funds and large institutions have $509M invested in Ribbon Communications in 2025 Q2 according to their latest regulatory filings, with 22 funds opening new positions, 59 increasing their positions, 35 reducing their positions, and 20 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
144
Holders Change
+1
Holders Change %
+0.7%
% of All Funds
1.93%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
22
Increased
59
Reduced
35
Closed
20
Calls
$926K
Puts
–
Net Calls
+$926K
Net Calls Change
-$40K

Top Buyers

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

Top Sellers

1
PCMI
Paradigm Capital Management Inc
New York
$35.1M
2
HIM
Hillsdale Investment Management
Ontario, Canada
$0
3
Bank of America
Bank of America
North Carolina
$420K
4
II
Inspire Investing
Idaho
$0
5
BCM
Bridgeway Capital Management
Texas
$0
Name Holding Trade Value Shares
Change 		Shares
Change %
JPMorgan Chase & Co
1
JPMorgan Chase & Co
New York
$209M -$5.2K -1,297 -0%
Neuberger Berman Group
2
Neuberger Berman Group
New York
$69.2M +$564K +150,433 +0.8%
PCMI
3
Paradigm Capital Management Inc
New York
$35.1M -$3.06M -763,000 -8%
BlackRock
4
BlackRock
New York
$31M -$201K -50,070 -0.6%
Vanguard Group
5
Vanguard Group
Pennsylvania
$30.2M +$268K +66,920 +0.9%
Dimensional Fund Advisors
6
Dimensional Fund Advisors
Texas
$26.3M +$769K +191,831 +3%
RA
7
Royce & Associates
New York
$14.7M +$2.33M +580,367 +19%
Geode Capital Management
8
Geode Capital Management
Massachusetts
$9.24M +$679K +169,402 +8%
State Street
9
State Street
Massachusetts
$8.39M +$362K +90,202 +5%
Connor, Clark & Lunn Investment Management (CC&L)
10
Connor, Clark & Lunn Investment Management (CC&L)
British Columbia, Canada
$5.92M +$1.15M +286,803 +24%
FWSM
11
First Wilshire Securities Management
California
$5.34M -$24.1K -6,014 -0.4%
Franklin Resources
12
Franklin Resources
California
$4.37M -$521K -129,882 -11%
First Eagle Investment Management
13
First Eagle Investment Management
New York
$4.11M +$582K +145,159 +16%
Northern Trust
14
Northern Trust
Illinois
$4.01M +$770K +192,001 +24%
HIM
15
Herald Investment Management
United Kingdom
$3.66M – – –
Millennium Management
16
Millennium Management
New York
$3.33M +$2.35M +585,049 +239%
Charles Schwab
17
Charles Schwab
California
$3.07M +$73.9K +18,417 +2%
Victory Capital Management
18
Victory Capital Management
Texas
$1.97M -$458K -114,129 -19%
Arrowstreet Capital
19
Arrowstreet Capital
Massachusetts
$1.94M -$293K -73,154 -13%
Jacobs Levy Equity Management
20
Jacobs Levy Equity Management
New Jersey
$1.73M +$67.5K +16,829 +4%
WPC
21
White Pine Capital
Minnesota
$1.68M +$254K +63,435 +18%
D.E. Shaw & Co
22
D.E. Shaw & Co
New York
$1.67M – – –
SBCM
23
Silverberg Bernstein Capital Management
New York
$1.57M +$397K +98,996 +34%
UBS AM
24
UBS AM
Illinois
$1.49M +$342K +85,201 +30%
Raymond James Financial
25
Raymond James Financial
Florida
$1.4M +$213K +53,214 +18%
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