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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 %
SEI Investments
51
SEI Investments
Pennsylvania
$380K 94,755 -1,215 -1%
California State Teachers Retirement System (CalSTRS)
52
California State Teachers Retirement System (CalSTRS)
California
$359K 89,506 – –
BFM
53
Boothbay Fund Management
New York
$329K 81,937 +20,665 +34%
IIM
54
INTECH Investment Management
Florida
$319K 79,654 +8,116 +11%
Jane Street
55
Jane Street
New York
$290K 72,396 -28,815 -28%
Teacher Retirement System of Texas
56
Teacher Retirement System of Texas
Texas
$289K 72,022 +19,013 +36%
Deutsche Bank
57
Deutsche Bank
Germany
$286K 71,403 -5,667 -7%
Assenagon Asset Management
58
Assenagon Asset Management
Luxembourg
$281K 70,123 -8,207 -10%
Wells Fargo
59
Wells Fargo
California
$264K 65,755 +5,237 +9%
Los Angeles Capital Management
60
Los Angeles Capital Management
California
$257K 64,160 +5,600 +10%
B
61
Bailard
California
$255K 63,600 +2,155 +4%
T. Rowe Price Associates
62
T. Rowe Price Associates
Maryland
$242K 60,139 -7,195 -11%
XT
63
XTX Topco
Cayman Islands
$233K 57,995 -99,833 -63%
MIM
64
MetLife Investment Management
New Jersey
$227K 56,676 +18,238 +47%
WVP
65
Worth Venture Partners
New Jersey
$223K 55,564 +5,000 +10%
Mirae Asset Global ETFs Holdings
66
Mirae Asset Global ETFs Holdings
Hong Kong
$211K 52,590 -2,340 -4%
Citigroup
67
Citigroup
New York
$205K 51,096 -31,364 -38%
Ohio Public Employees Retirement System (OPERS)
68
Ohio Public Employees Retirement System (OPERS)
Ohio
$204K 50,945 – –
Zurich Cantonal Bank
69
Zurich Cantonal Bank
Switzerland
$190K 47,307 +38,011 +409%
Balyasny Asset Management
70
Balyasny Asset Management
Illinois
$186K 46,472 +46,472 New
State Board of Administration of Florida Retirement System
71
State Board of Administration of Florida Retirement System
Florida
$151K 37,543 – –
Manulife (Manufacturers Life Insurance)
72
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$148K 36,842 +2,436 +7%
Axa
73
Axa
France
$147K 36,762 – –
Janus Henderson Group
74
Janus Henderson Group
United Kingdom
$143K 35,625 – –
Focus Partners Wealth
75
Focus Partners Wealth
Massachusetts
$143K 35,585 +5 +0%
1 2
3
4 5