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Ribbon Communications
RBBN
RBBN
150 hedge funds and large institutions have $268M invested in Ribbon Communications in 2026 Q1 according to their latest regulatory filings, with 37 funds opening new positions, 51 increasing their positions, 43 reducing their positions, and 35 closing their positions.
New
Increased
Maintained
Reduced
Closed
19% more repeat investments, than reductions
Existing positions increased: 51 | Existing positions reduced: 43
6% more first-time investments, than exits
New positions opened: 37 | Existing positions closed: 35
0.19% more ownership
Funds ownership: 73.41% → 73.61% (+0.19%)
2% less funds holding
Funds holding: 153 → 150 (-3)
27% less capital invested
Capital invested by funds: $369M → $268M (-$101M)
Holders
150
Holders Change
-3
Holders Change %
-1.96%
% of All Funds
1.85%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
37
Increased
51
Reduced
43
Closed
35
Calls
$512K
Puts
–
Net Calls
+$512K
Net Calls Change
-$226K
Top Buyers
| 1 |
AQR Capital Management
Greenwich,
Connecticut
|
+$1.83M |
| 2 |
Acadian Asset Management
Boston,
Massachusetts
|
+$1.62M |
| 3 |
Marshall Wace
London,
United Kingdom
|
+$1.43M |
| 4 |
D.E. Shaw & Co
New York
|
+$1.34M |
| 5 |
Citadel Advisors
Miami,
Florida
|
+$1.25M |
Top Sellers
| 1 |
First Eagle Investment Management
New York
|
-$2.48M |
| 2 |
BlackRock
New York
|
-$2.25M |
| 3 |
KCM
Kennedy Capital Management
St Louis,
Missouri
|
-$2.05M |
| 4 |
HIM
Herald Investment Management
London,
United Kingdom
|
-$1.68M |
| 5 |
Jane Street
New York
|
-$1.09M |
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
176
Mackenzie Financial
Toronto Ontario,
Ontario, Canada
| – | -$31.4K | -10,652 | Closed |
|
|
FA
177
Fortis Advisors
Wayne,
Pennsylvania
| – | -$28.8K | -10,000 | Closed |
|
178
Canada Life
Winnipeg,
Manitoba, Canada
| – | -$11K | -3,680 | Closed |
|
|
AB
179
Amalgamated Bank
New York
| – | -$8K | -2,947 | Closed |
|
180
Simplex Trading
Chicago,
Illinois
| – | -$6.19K | -2,586 | Closed |
|
|
PA
181
Parallel Advisors
San Francisco,
California
| – | -$596 | -207 | Closed |
|
|
QCG
182
Quadrant Capital Group
Cincinnati,
Ohio
| – | -$484 | -168 | Closed |
|
183
Nisa Investment Advisors
St. Louis,
Missouri
| – | -$452 | -157 | Closed |
|
|
GI
184
GAMMA Investing
Foster City,
California
| – | -$150 | -52 | Closed |
|
|
AT
185
Arlington Trust
Birmingham,
Alabama
| – | -$17 | -6 | Closed |
|