457 hedge funds and large institutions have $6.22B invested in Rambus in 2025 Q2 according to their latest regulatory filings, with 87 funds opening new positions, 192 increasing their positions, 130 reducing their positions, and 38 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

more capital invested

Capital invested by funds: $ → $

more funds holding

Funds holding:

0.74% more ownership

Funds ownership: 89.74%90.48% (+0.74%)

46% less call options, than puts

Call options by funds: $35.8M | Put options by funds: $65.8M

50% less funds holding in top 10

Funds holding in top 10: 21 (-1)

Holders
457
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
1
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$35.8M
Puts
$65.8M
Net Calls
Net Calls Change

Top Sellers

1 -$260M
2 -$141M
3 -$89.1M
4
SG Americas Securities
SG Americas Securities
New York
-$30.9M
5
JP Morgan Chase
JP Morgan Chase
New York
-$29.9M
Name Holding Trade Value Shares
Change
Change in
Stake
Mariner
201
Mariner
Kansas
$1.15M
Pictet Asset Management
202
Pictet Asset Management
Switzerland
$1.14M
GC
203
Gould Capital
Washington
$1.11M
Stifel Financial
204
Stifel Financial
Missouri
$1.11M
DAS
205
Diversify Advisory Services
Utah
$1.09M
Envestnet Portfolio Solutions
206
Envestnet Portfolio Solutions
Illinois
$1.08M
GC
207
Guggenheim Capital
Illinois
$1.07M
Kovitz Investment Group Partners
208
Kovitz Investment Group Partners
Illinois
$1.07M
QCM
209
Quantinno Capital Management
New York
$1.06M
Carson Wealth (CWM LLC)
210
Carson Wealth (CWM LLC)
Nebraska
$1.04M
FRM
211
Fox Run Management
Connecticut
$1.03M
TRCT
212
Tower Research Capital (TRC)
New York
$999K
X
213
Xponance
Pennsylvania
$990K
PNC Financial Services Group
214
PNC Financial Services Group
Pennsylvania
$968K
EP
215
Edgestream Partners
New Jersey
$952K
QCG
216
Quadrant Capital Group
Ohio
$946K
CCIA
217
Campbell & Co Investment Adviser
Maryland
$915K
Bank of Montreal
218
Bank of Montreal
Ontario, Canada
$896K
GWM
219
Gibbs Wealth Management
Georgia
$891K
YIH
220
Y-Intercept (HK)
Hong Kong
$879K
FCBT
221
First Citizens Bank & Trust
North Carolina
$870K
US Bancorp
222
US Bancorp
Minnesota
$863K
Caisse de Depot et Placement du Quebec (CDPQ)
223
Caisse de Depot et Placement du Quebec (CDPQ)
Quebec, Canada
$857K
CWM
224
CIBC World Markets
New York
$852K
Cambridge Investment Research Advisors
225
Cambridge Investment Research Advisors
Iowa
$839K