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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 %
BlackRock
1
BlackRock
New York
$960M 15,000,080 +763,514 +5%
Vanguard Group
2
Vanguard Group
Pennsylvania
$804M 12,560,825 +118,413 +1%
T. Rowe Price Associates
3
T. Rowe Price Associates
Maryland
$300M 4,693,390 -4,053,466 -46%
State Street
4
State Street
Massachusetts
$289M 4,508,997 -71,560 -2%
JPMorgan Chase & Co
5
JPMorgan Chase & Co
New York
$204M 3,180,376 -467,030 -13%
EIG
6
EdgePoint Investment Group
Ontario, Canada
$178M 2,787,327 +1,618,133 +138%
Geode Capital Management
7
Geode Capital Management
Massachusetts
$172M 2,687,691 +35,744 +1%
Invesco
8
Invesco
Georgia
$149M 2,322,124 -2,209,902 -49%
Bank of New York Mellon
9
Bank of New York Mellon
New York
$129M 2,019,504 +235,253 +13%
Norges Bank
10
Norges Bank
Norway
$126M 1,972,325 +1,972,325 New
Dimensional Fund Advisors
11
Dimensional Fund Advisors
Texas
$123M 1,917,673 +49,239 +3%
WHG
12
Westwood Holdings Group
Texas
$111M 1,737,062 +504,852 +41%
Swedbank
13
Swedbank
Sweden
$109M 1,700,000 – –
Northern Trust
14
Northern Trust
Illinois
$89.2M 1,393,686 -26,927 -2%
Raymond James Financial
15
Raymond James Financial
Florida
$87.8M 1,372,109 +432,397 +46%
Neuberger Berman Group
16
Neuberger Berman Group
New York
$86.3M 1,348,038 +65,870 +5%
Charles Schwab
17
Charles Schwab
California
$82.4M 1,287,035 +30,689 +2%
CAM
18
Congress Asset Management
Massachusetts
$81.7M 1,276,926 +77,362 +6%
Wellington Management Group
19
Wellington Management Group
Massachusetts
$77.3M 1,206,766 +12,720 +1%
VOYA Investment Management
20
VOYA Investment Management
Georgia
$76.8M 1,199,373 +90,258 +8%
Morgan Stanley
21
Morgan Stanley
New York
$74.5M 1,163,259 +225,227 +24%
NL
22
Nuveen LLC
North Carolina
$72.7M 1,135,670 +33,121 +3%
Westfield Capital Management
23
Westfield Capital Management
Massachusetts
$61.6M 962,419 -126,662 -12%
HRCM
24
Hood River Capital Management
Florida
$61.2M 955,600 +10,706 +1%
Assenagon Asset Management
25
Assenagon Asset Management
Luxembourg
$56.4M 881,562 +702,704 +393%
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