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
RhumbLine Advisers
51
RhumbLine Advisers
Massachusetts
$28.9M
Public Sector Pension Investment Board (PSP Investments)
52
Public Sector Pension Investment Board (PSP Investments)
Quebec, Canada
$28M
First Trust Advisors
53
First Trust Advisors
Illinois
$27.6M
Lazard Asset Management
54
Lazard Asset Management
New York
$27.4M
WHG
55
Westwood Holdings Group
Texas
$26.2M
ACH
56
ArrowMark Colorado Holdings
Colorado
$25M
GIM
57
Granahan Investment Management
Massachusetts
$24.4M
Millennium Management
58
Millennium Management
New York
$24.1M
SAM
59
Silvercrest Asset Management
New York
$23M
BNP Paribas Financial Markets
60
BNP Paribas Financial Markets
France
$22.7M
UBS AM
61
UBS AM
Illinois
$22.5M
MIM
62
MetLife Investment Management
New Jersey
$22.1M
Osaic Holdings
63
Osaic Holdings
Arizona
$19.9M
Wells Fargo
64
Wells Fargo
California
$19.9M
NAMI
65
Nomura Asset Management International
Pennsylvania
$19.9M
Prudential Financial
66
Prudential Financial
New Jersey
$19.6M
Swiss National Bank
67
Swiss National Bank
Switzerland
$19.5M
AG
68
Algert Global
California
$18.6M
California Public Employees Retirement System
69
California Public Employees Retirement System
California
$18M
SIMG
70
Stephens Investment Management Group
Texas
$17.8M
SIC
71
Schwartz Investment Counsel
Michigan
$16.6M
WCM Investment Management
72
WCM Investment Management
California
$16.3M
Legal & General Group
73
Legal & General Group
United Kingdom
$16.3M
GT
74
Glenmede Trust
Pennsylvania
$15.9M
Citadel Advisors
75
Citadel Advisors
Florida
$15.6M