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Ribbon Communications
RBBN

Overview Fund Activity

143 hedge funds and large institutions have $495M invested in Ribbon Communications in 2025 Q1 according to their latest regulatory filings, with 28 funds opening new positions, 44 increasing their positions, 48 reducing their positions, and 16 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
143
Holders Change
+11
Holders Change %
+8.33%
% of All Funds
1.94%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
28
Increased
44
Reduced
48
Closed
16
Calls
$999K
Puts
$33K
Net Calls
+$966K
Net Calls Change
-$173K

Top Buyers

1
Connor, Clark & Lunn Investment Management (CC&L)
Connor, Clark & Lunn Investment Management (CC&L)
British Columbia, Canada
+$2.01M
2
HIM
Hillsdale Investment Management
Ontario, Canada
+$1.28M
3
Raymond James Financial
Raymond James Financial
Florida
+$1.16M
4
Commonwealth Equity Services
Commonwealth Equity Services
Massachusetts
+$1.13M
5
RA
Royce & Associates
New York
+$1.13M

Top Sellers

1
PCMI
Paradigm Capital Management Inc
New York
-$2.46M
2
Federated Hermes
Federated Hermes
Pennsylvania
-$1.32M
3
UBS Group
UBS Group
Switzerland
-$1.17M
4
HIM
Herald Investment Management
United Kingdom
-$826K
5
MIC
Maxi Investments CY
Cyprus
-$812K
Name Holding Trade Value Shares
Change 		Shares
Change %
Susquehanna International Group
51
Susquehanna International Group
Pennsylvania
$442K +$263K +67,043 +147%
Legal & General Group
52
Legal & General Group
United Kingdom
$400K – – –
Jane Street
53
Jane Street
New York
$397K +$323K +82,361 +437%
AllianceBernstein
54
AllianceBernstein
Tennessee
$388K -$274 -70 -0.1%
SEI Investments
55
SEI Investments
Pennsylvania
$376K +$62.2K +15,880 +20%
California State Teachers Retirement System (CalSTRS)
56
California State Teachers Retirement System (CalSTRS)
California
$351K – – –
PCM
57
Penn Capital Management
Pennsylvania
$350K +$298K +75,928 +568%
Citigroup
58
Citigroup
New York
$323K -$30.7K -7,839 -9%
Assenagon Asset Management
59
Assenagon Asset Management
Luxembourg
$307K -$167K -42,624 -35%
Deutsche Bank
60
Deutsche Bank
Germany
$302K -$32.1K -8,189 -10%
Lazard Asset Management
61
Lazard Asset Management
New York
$283K +$77.1K +19,680 +37%
IIM
62
INTECH Investment Management
Florida
$280K +$60K +15,302 +27%
T. Rowe Price Associates
63
T. Rowe Price Associates
Maryland
$264K +$18.5K +4,730 +8%
SG Americas Securities
64
SG Americas Securities
New York
$244K +$87.5K +22,306 +56%
B
65
Bailard
California
$241K -$54.7K -13,955 -19%
BFM
66
Boothbay Fund Management
New York
$240K -$275K -70,226 -53%
Wells Fargo
67
Wells Fargo
California
$237K +$4.38K +1,117 +2%
PCM
68
Polymer Capital Management
New York
$234K +$181K +46,268 +348%
Los Angeles Capital Management
69
Los Angeles Capital Management
California
$230K -$32.4K -8,260 -12%
Mirae Asset Global ETFs Holdings
70
Mirae Asset Global ETFs Holdings
Hong Kong
$215K +$9.2K +2,346 +4%
Teacher Retirement System of Texas
71
Teacher Retirement System of Texas
Texas
$208K +$208K +53,009 New
Ohio Public Employees Retirement System (OPERS)
72
Ohio Public Employees Retirement System (OPERS)
Ohio
$200K -$30.1K -7,691 -13%
WVP
73
Worth Venture Partners
New Jersey
$198K +$19.6K +5,000 +11%
CF
74
Corebridge Financial
Texas
$176K -$2.61K -665 -1%
GCP
75
GSA Capital Partners
United Kingdom
$171K +$171K +43,682 New
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