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552 hedge funds and large institutions have $9.18B invested in Rambus in 2025 Q4 according to their latest regulatory filings, with 102 funds opening new positions, 190 increasing their positions, 194 reducing their positions, and 53 closing their positions.

New
Increased
Maintained
Reduced
Closed

92% more first-time investments, than exits

New positions opened: 102 | Existing positions closed: 53

40% more call options, than puts

Call options by funds: $65.1M | Put options by funds: $46.4M

8% more funds holding

Funds holding: 512552 (+40)

0.94% more ownership

Funds ownership: 91.78%92.72% (+0.94%)

2% less repeat investments, than reductions

Existing positions increased: 190 | Existing positions reduced: 194

11% less capital invested

Capital invested by funds: $10.3B → $9.18B (-$1.11B)

50% less funds holding in top 10

Funds holding in top 10: 63 (-3)

Holders
552
Holders Change
+40
Holders Change %
+7.81%
% of All Funds
6.72%
Holding in Top 10
3
Holding in Top 10 Change
-3
Holding in Top 10 Change %
-50%
% of All Funds
0.04%
New
102
Increased
190
Reduced
194
Closed
53
Calls
$65.1M
Puts
$46.4M
Net Calls
+$18.7M
Net Calls Change
-$41.3M
Name Holding Trade Value Shares
Change
Change in
Stake
RhumbLine Advisers
51
RhumbLine Advisers
Massachusetts
$28.9M -$2.93M -29,775 -9%
Public Sector Pension Investment Board (PSP Investments)
52
Public Sector Pension Investment Board (PSP Investments)
Quebec, Canada
$28M +$30M +305,209 New
First Trust Advisors
53
First Trust Advisors
Illinois
$27.6M +$9.8M +99,611 +50%
Lazard Asset Management
54
Lazard Asset Management
New York
$27.4M -$104K -1,058 -0.4%
WHG
55
Westwood Holdings Group
Texas
$26.2M +$4.92M +50,016 +21%
ACH
56
ArrowMark Colorado Holdings
Colorado
$25M +$26.8M +272,010 New
GIM
57
Granahan Investment Management
Massachusetts
$24.4M +$2.66M +27,073 +11%
Millennium Management
58
Millennium Management
New York
$24.1M +$6.43M +65,346 +33%
SAM
59
Silvercrest Asset Management
New York
$23M -$21.1M -214,903 -46%
BNP Paribas Financial Markets
60
BNP Paribas Financial Markets
France
$22.7M +$7.99M +81,183 +49%
UBS AM
61
UBS AM
Illinois
$22.5M -$941K -9,562 -4%
MIM
62
MetLife Investment Management
New Jersey
$22.1M -$556K -5,650 -2%
Osaic Holdings
63
Osaic Holdings
Arizona
$19.9M -$746K -7,583 -3%
Wells Fargo
64
Wells Fargo
California
$19.9M +$3.54M +35,934 +20%
NAMI
65
Nomura Asset Management International
Pennsylvania
$19.9M +$21.3M +216,867 New
Prudential Financial
66
Prudential Financial
New Jersey
$19.6M -$726K -7,379 -3%
Swiss National Bank
67
Swiss National Bank
Switzerland
$19.5M +$394K +4,000 +2%
AG
68
Algert Global
California
$18.6M +$7.86M +79,835 +65%
California Public Employees Retirement System
69
California Public Employees Retirement System
California
$18M +$11.4K +116 +0.1%
SIMG
70
Stephens Investment Management Group
Texas
$17.8M +$30.6K +311 +0.2%
SIC
71
Schwartz Investment Counsel
Michigan
$16.6M -$4.92M -50,000 -22%
WCM Investment Management
72
WCM Investment Management
California
$16.3M -$12.4M -126,514 -42%
Legal & General Group
73
Legal & General Group
United Kingdom
$16.3M -$4.14M -42,118 -19%
GT
74
Glenmede Trust
Pennsylvania
$15.9M +$17M +172,534 New
Citadel Advisors
75
Citadel Advisors
Florida
$15.6M +$9.96M +101,199 +147%