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Rambus
RMBS

Overview Fund Activity

449 hedge funds and large institutions have $6.2B invested in Rambus in 2025 Q2 according to their latest regulatory filings, with 86 funds opening new positions, 187 increasing their positions, 128 reducing their positions, and 38 closing their positions.

Holders
449
Holders Change
+42
Holders Change %
+10.32%
% of All Funds
6.03%
Holding in Top 10
1
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-50%
% of All Funds
0.01%
New
86
Increased
187
Reduced
128
Closed
38
Calls
$24.3M
Puts
$50.4M
Net Calls
-$26.1M
Net Calls Change
-$35.1M

Top Buyers

1
Norges Bank
1
Norges Bank
Norway
$126M
2
EIG
2
EdgePoint Investment Group
Ontario, Canada
$178M
3
BlackRock
3
BlackRock
New York
$960M
4
Assenagon Asset Management
4
Assenagon Asset Management
Luxembourg
$56.4M
5
WHG
5
Westwood Holdings Group
Texas
$111M

Top Sellers

1
T. Rowe Price Associates
1
T. Rowe Price Associates
Maryland
$300M
2
Invesco
2
Invesco
Georgia
$149M
3
American Century Companies
3
American Century Companies
Missouri
$2.11M
4
SG Americas Securities
4
SG Americas Securities
New York
$550K
5
JPMorgan Chase & Co
5
JPMorgan Chase & Co
New York
$204M
Name Market Value Shares Shares
Change 		Shares
Change %
Citadel Advisors
76
Citadel Advisors
Florida
$9.76M 152,404 +134,132 +734%
MOACM
77
Mutual of America Capital Management
New York
$9.72M 151,854 +6,932 +5%
Citigroup
78
Citigroup
New York
$9.61M 150,134 +38,180 +34%
First Trust Advisors
79
First Trust Advisors
Illinois
$9.56M 149,330 +20,601 +16%
Canada Pension Plan Investment Board
80
Canada Pension Plan Investment Board
Ontario, Canada
$9.06M 141,500 +800 +0.6%
Man Group
81
Man Group
United Kingdom
$9.05M 141,292 +113,144 +402%
UBS Group
82
UBS Group
Switzerland
$8.99M 140,441 +17,765 +14%
Two Sigma Investments
83
Two Sigma Investments
New York
$8.43M 131,653 -181,521 -58%
Retirement Systems of Alabama
84
Retirement Systems of Alabama
Alabama
$8.4M 131,283 +1,568 +1%
Russell Investments Group
85
Russell Investments Group
United Kingdom
$8.4M 131,178 -8,979 -6%
GIM
86
Granahan Investment Management
Massachusetts
$8.33M 130,081 +1,399 +1%
Two Sigma Advisers
87
Two Sigma Advisers
New York
$8.28M 129,300 -164,500 -56%
Deutsche Bank
88
Deutsche Bank
Germany
$8.18M 127,806 -65,020 -34%
AssetMark Inc
89
AssetMark Inc
California
$8.04M 125,556 +11,100 +10%
RG
90
Renaissance Group
Kentucky
$7.78M 121,593 +27,928 +30%
Manulife (Manufacturers Life Insurance)
91
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$7.76M 121,209 -4,844 -4%
CM
92
Castleark Management
Illinois
$7.34M 114,700 -3,400 -3%
VanEck Associates
93
VanEck Associates
New York
$7.26M 113,364 -14,939 -12%
ACA
94
Apis Capital Advisors
New York
$7.17M 112,000 +18,000 +19%
Jane Street
95
Jane Street
New York
$6.97M 108,921 -239,370 -69%
Los Angeles Capital Management
96
Los Angeles Capital Management
California
$6.67M 104,146 +84,509 +430%
HIM
97
Hillsdale Investment Management
Ontario, Canada
$6.63M 103,630 +39,030 +60%
SLG
98
Stanley-Laman Group
Pennsylvania
$6.61M 103,312 +103,312 New
State of Wisconsin Investment Board
99
State of Wisconsin Investment Board
Wisconsin
$6.47M 100,995 -1,876 -2%
PAMP
100
Polar Asset Management Partners
Ontario, Canada
$6.41M 100,170 +100,170 New
2 3
4
5 6