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Ribbon Communications
RBBN

153 hedge funds and large institutions have $369M invested in Ribbon Communications in 2025 Q4 according to their latest regulatory filings, with 25 funds opening new positions, 56 increasing their positions, 51 reducing their positions, and 24 closing their positions.

New
Increased
Maintained
Reduced
Closed

10% more repeat investments, than reductions

Existing positions increased: 56 | Existing positions reduced: 51

4% more first-time investments, than exits

New positions opened: 25 | Existing positions closed: 24

0.08% more ownership

Funds ownership: 73.34% → 73.41% (+0.08%)

0% more funds holding

Funds holding: 153 → 153 (0)

24% less capital invested

Capital invested by funds: $489M → $369M (-$119M)

Holders
153
Holders Change
–
Holders Change %
0%
% of All Funds
1.86%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
25
Increased
56
Reduced
51
Closed
24
Calls
$738K
Puts
–
Net Calls
+$738K
Net Calls Change
-$111K

Top Buyers

Rank Fund Capital Flow
1
Acadian Asset Management
Acadian Asset Management
Massachusetts
+$2.34M
2
KCM
Kennedy Capital Management
Missouri
+$2.29M
3
Jacobs Levy Equity Management
Jacobs Levy Equity Management
New Jersey
+$1.35M
4
D.E. Shaw & Co
D.E. Shaw & Co
New York
+$1.26M
5
Goldman Sachs
Goldman Sachs
New York
+$1.17M

Top Sellers

Rank Fund Capital Flow
1
Neuberger Berman Group
Neuberger Berman Group
New York
-$2.66M
2
CCM
Cinctive Capital Management
New York
-$1.99M
3
Franklin Resources
Franklin Resources
California
-$1.7M
4
PCMI
Paradigm Capital Management Inc
New York
-$1.37M
5
Raymond James Financial
Raymond James Financial
Florida
-$1.33M
Name Holding Trade Value Shares
Change 		Change in
Stake
AT
151
Arlington Trust
Alabama
$17 – – –
TWD
152
True Wealth Design
Ohio
$9 -$816 -253 -99%
EWA
153
EverSource Wealth Advisors
Alabama
$6 -$526 -163 -99%
CCM
154
Cinctive Capital Management
New York
– -$1.99M -524,067 Closed
Raymond James Financial
155
Raymond James Financial
Florida
– -$1.33M -348,802 Closed
Lazard Asset Management
156
Lazard Asset Management
New York
– -$794K -208,956 Closed
PCM
157
Penn Capital Management
Pennsylvania
– -$608K -160,129 Closed
Squarepoint
158
Squarepoint
New York
– -$483K -127,152 Closed
Polen Capital Management
159
Polen Capital Management
Florida
– -$332K -87,246 Closed
RRA
160
Round Rock Advisors
Connecticut
– -$256K -74,240 Closed
Renaissance Technologies
161
Renaissance Technologies
New York
– -$147K -38,800 Closed
HighTower Advisors
162
HighTower Advisors
Illinois
– -$94.3K -24,828 Closed
HSBC Holdings
163
HSBC Holdings
United Kingdom
– -$88K -23,528 Closed
Creative Planning
164
Creative Planning
Kansas
– -$87.2K -22,945 Closed
MM
165
MQS Management
New York
– -$81K -21,308 Closed
NW
166
NewEdge Wealth
Pennsylvania
– -$48.5K -15,069 Closed
VAS
167
Vestmark Advisory Solutions
Massachusetts
– -$57.3K -15,069 Closed
EF
168
Empowered Funds
Pennsylvania
– -$55.1K -14,502 Closed
FBT
169
First Bank & Trust
South Dakota
– -$52.2K -13,725 Closed
Teacher Retirement System of Texas
170
Teacher Retirement System of Texas
Texas
– -$47.3K -12,441 Closed
Prudential Financial
171
Prudential Financial
New Jersey
– -$44.5K -11,711 Closed
Susquehanna International Group
172
Susquehanna International Group
Pennsylvania
– -$36.2K -11,214 Closed
BP
173
Ballentine Partners
Massachusetts
– -$42.1K -11,076 Closed
SSA
174
Schonfeld Strategic Advisors
New York
– -$41.1K -10,826 Closed
Optiver Holding
175
Optiver Holding
Netherlands
– -$2.52K -662 Closed
4 5 6
7
8

RBBN Hedge Fund Activity: Q4 2025 in Review

153 of the 8,223 institutional investors tracked by Wall St. Rank reported a position in Ribbon Communications (RBBN) for Q4 2025, worth a combined $369M — down 24% from $489M a quarter earlier.

Buyers outnumbered sellers: 25 funds opened new RBBN positions and 24 closed out — a net gain of 1 holder — while 56 added to existing stakes and 51 trimmed.

The largest buyer was Acadian Asset Management, adding an estimated $2.34M. The largest seller was Neuberger Berman Group, cutting an estimated $2.66M.

  • 153 institutional investors held Ribbon Communications (RBBN) as of Q4 2025, unchanged from Q3 2025.
  • Funds reported $369M of Ribbon Communications stock for Q4 2025, down 24% quarter-over-quarter.
  • 25 funds opened new Ribbon Communications positions in Q4 2025 and 24 closed out, a net change of +1 holder.
  • The largest Ribbon Communications buyer in Q4 2025 was Acadian Asset Management, an estimated $2.34M added.
  • The largest Ribbon Communications seller in Q4 2025 was Neuberger Berman Group, an estimated $2.66M sold.

Based on aggregated 13F filings for Q4 2025.