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Rambus

544 hedge funds and large institutions have $9.17B invested in Rambus in 2025 Q4 according to their latest regulatory filings, with 98 funds opening new positions, 189 increasing their positions, 191 reducing their positions, and 54 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more call options, than puts

Call options by funds: $ | Put options by funds: $

more funds holding

Funds holding:

more ownership

Funds ownership:

1% less repeat investments, than reductions

Existing positions increased: 189 | Existing positions reduced: 191

11% less capital invested

Capital invested by funds: $10.3B → $9.17B (-$1.12B)

50% less funds holding in top 10

Funds holding in top 10: 63 (-3)

Holders
544
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
3
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$65.1M
Puts
$46.4M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
Wellington Management Group
26
Wellington Management Group
Massachusetts
$85.8M
Morgan Stanley
27
Morgan Stanley
New York
$81.3M
VOYA Investment Management
28
VOYA Investment Management
Georgia
$66.5M
AQR Capital Management
29
AQR Capital Management
Connecticut
$65.3M
HRCM
30
Hood River Capital Management
Florida
$65.1M
Loomis, Sayles & Company
31
Loomis, Sayles & Company
Massachusetts
$64.4M
T. Rowe Price Investment Management
32
T. Rowe Price Investment Management
Maryland
$63.2M
EA
33
Emerald Advisers
Pennsylvania
$57.6M
Ameriprise
34
Ameriprise
Minnesota
$52.1M
Allspring Global Investments
35
Allspring Global Investments
North Carolina
$51.8M
Lord, Abbett & Co
36
Lord, Abbett & Co
New Jersey
$49.5M
Fisher Asset Management
37
Fisher Asset Management
Washington
$47.5M
Citigroup
38
Citigroup
New York
$46.2M
Franklin Resources
39
Franklin Resources
California
$44.6M
Canada Pension Plan Investment Board
40
Canada Pension Plan Investment Board
Ontario, Canada
$42.9M
OAM
41
Oberweis Asset Management
Illinois
$42.5M
UBS Group
42
UBS Group
Switzerland
$41.9M
Caisse de Depot et Placement du Quebec (CDPQ)
43
Caisse de Depot et Placement du Quebec (CDPQ)
Quebec, Canada
$41.1M
PAM
44
Panagora Asset Management
Massachusetts
$39.9M
Principal Financial Group
45
Principal Financial Group
Iowa
$37.8M
EMFAT
46
Emerald Mutual Fund Advisers Trust
Pennsylvania
$35.9M
SEI Investments
47
SEI Investments
Pennsylvania
$35.5M
Janus Henderson Group
48
Janus Henderson Group
United Kingdom
$34.9M
Westfield Capital Management
49
Westfield Capital Management
Massachusetts
$33.3M
William Blair Investment Management
50
William Blair Investment Management
Illinois
$29.1M