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553 hedge funds and large institutions have $8.82B invested in Rambus in 2026 Q1 according to their latest regulatory filings, with 84 funds opening new positions, 185 increasing their positions, 208 reducing their positions, and 74 closing their positions.

New
Increased
Maintained
Reduced
Closed

85% more call options, than puts

Call options by funds: $49.5M | Put options by funds: $26.8M

14% more first-time investments, than exits

New positions opened: 84 | Existing positions closed: 74

2.3% more ownership

Funds ownership: 92.72%95.02% (+2.3%)

0% more funds holding

Funds holding: 552553 (+1)

4% less capital invested

Capital invested by funds: $9.18B → $8.82B (-$353M)

11% less repeat investments, than reductions

Existing positions increased: 185 | Existing positions reduced: 208

33% less funds holding in top 10

Funds holding in top 10: 32 (-1)

Holders
553
Holders Change
+1
Holders Change %
+0.18%
% of All Funds
6.81%
Holding in Top 10
2
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-33.33%
% of All Funds
0.02%
New
84
Increased
185
Reduced
208
Closed
74
Calls
$49.5M
Puts
$26.8M
Net Calls
+$22.7M
Net Calls Change
+$4.03M
Name Holding Trade Value Shares
Change
Change in
Stake
KK
201
KLP Kapitalforvaltning
Norway
$2.05M +$79.8K +800 +3%
ES
202
Element Squared
Minnesota
$2.03M +$2.35M +23,567 New
CCM
203
Capstone Capital Management
$2.01M +$2.33M +23,326 New
ISWM
204
Independent Solutions Wealth Management
New York
$1.94M +$2.25M +22,574 New
VPIM
205
Vanguard Personalized Indexing Management
California
$1.91M +$42.3K +424 +2%
NMERB
206
New Mexico Educational Retirement Board
New Mexico
$1.9M
OPERF
207
Oregon Public Employees Retirement Fund
Oregon
$1.9M +$55.2K +553 +3%
XT
208
XTX Topco
Cayman Islands
$1.82M +$2.12M +21,202 New
EH
209
Equitable Holdings
New York
$1.8M +$1.26M +12,630 +182%
Mariner
210
Mariner
Kansas
$1.66M -$8.28K -83 -0.4%
PAS
211
Park Avenue Securities
New York
$1.63M +$13.7K +137 +0.7%
TAM
212
Tealwood Asset Management
Minnesota
$1.63M -$3.49K -35 -0.2%
BMSSC
213
B. Metzler seel. Sohn & Co
Germany
$1.61M
SOADOR
214
State of Alaska Department of Revenue
Alaska
$1.6M +$14.5K +145 +0.8%
CI
215
Cambiar Investors
Colorado
$1.59M
GWM
216
Gibbs Wealth Management
Georgia
$1.57M +$711K +7,121 +64%
Bank of Montreal
217
Bank of Montreal
Ontario, Canada
$1.54M +$595K +5,959 +50%
GLA
218
Great Lakes Advisors
Illinois
$1.53M -$47.2K -473 -3%
CPC
219
Cookson Peirce & Co
Pennsylvania
$1.49M +$371K +3,721 +27%
Acadian Asset Management
220
Acadian Asset Management
Massachusetts
$1.47M -$15.2M -152,325 -90%
Cambridge Investment Research Advisors
221
Cambridge Investment Research Advisors
Iowa
$1.44M -$33.8K -339 -2%
Envestnet Portfolio Solutions
222
Envestnet Portfolio Solutions
Illinois
$1.43M -$48.4K -485 -3%
Citadel Advisors
223
Citadel Advisors
Florida
$1.42M -$15.3M -153,407 -90%
Amundi
224
Amundi
France
$1.41M +$400K +4,013 +32%
AAM
225
Azzad Asset Management
Virginia
$1.4M -$795K -7,966 -33%