Rambus Ownership | Who Owns Rambus?
Rambus Ownership Summary
Rambus is owned by 88.11% institutional investors, 0.77% insiders, and 11.12% retail investors. Blackrock is the largest institutional shareholder, holding 14.60% of RMBS shares. iShares Core S&P Mid-Cap ETF is the top mutual fund, with 3.22% of its assets in Rambus shares.
RMBS Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Rambus | 88.11% | 0.77% | 11.12% |
| Sector | Technology Stocks | 38.56% | 12.67% | 48.77% |
| Idea | Semiconductor Stocks List | 48.74% | 7.10% | 44.16% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Blackrock | 15.79M | 14.60% | $927.60M |
| Blackrock funding, inc. /de | 14.14M | 13.19% | $747.39M |
| Vanguard group | 12.59M | 11.75% | $665.77M |
| Price t rowe associates inc /md/ | 5.45M | 5.08% | $288.04M |
| Invesco | 5.00M | 4.66% | $264.29M |
| State street | 4.65M | 4.31% | $273.49M |
| Jpmorgan chase | 4.18M | 3.90% | $221.19M |
| Geode capital management | 2.58M | 2.40% | $136.26M |
| Bank of new york mellon | 2.10M | 1.95% | $110.79M |
| Norges bank | 1.79M | 1.66% | $94.37M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Barington capital group | 120.00K | 5.78% | $6.34M |
| Analog century management lp | 825.29K | 2.92% | $43.62M |
| Mesirow institutional investment management | 298.17K | 1.21% | $15.76M |
| Emerald mutual fund advisers trust | 356.96K | 1.15% | $18.87M |
| Yorktown management & research | 17.80K | 1.12% | $1.05M |
| Penn capital management company | 214.86K | 1.11% | $11.36M |
| Emerald advisers | 543.83K | 1.11% | $28.75M |
| Oberweis asset management inc/ | 409.40K | 1.02% | $21.64M |
| Westwood group | 1.13M | 0.46% | $59.62M |
| Moody aldrich partners | 45.71K | 0.45% | $2.42M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Price t rowe associates inc /md/ | 5.45M | 0.03% | 4.45M |
| Invesco | 5.00M | 0.05% | 2.09M |
| Norges bank | 1.79M | 0.01% | 1.79M |
| Raymond james financial | 974.28K | 0.02% | 974.28K |
| Congress asset management co /ma | 866.03K | 0.31% | 866.03K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Hood river capital management | - | - | -2.17M |
| Rafferty asset management | - | - | -871.31K |
| Vaughan nelson investment management | 735.79K | 0.36% | -727.14K |
| Voloridge investment management | - | - | -551.77K |
| Assenagon asset management | 760.21K | 0.06% | -506.57K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Norges bank | 1.79M | 0.01% | 1.79M | $94.37M |
| Raymond james financial | 974.28K | 0.02% | 974.28K | $51.50M |
| Congress asset management co /ma | 866.03K | 0.31% | 866.03K | $45.78M |
| Analog century management lp | 825.29K | 2.92% | 825.29K | $43.62M |
| Oberweis asset management inc/ | 409.40K | 1.02% | 409.40K | $21.64M |
Sold Out
| Holder | Change |
|---|---|
| Tfc financial management | -1.00 |
| Hexagon capital partners | -3.00 |
| Albion financial group /ut | -3.00 |
| Claris advisors, llc / mo / | -3.00 |
| Tfo-tdc | -4.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 31, 2025 | 419 | 2.20% | 94,490,759 | -0.48% | 88 | 1.12% | 229 | 13.93% | 131 | -12.08% |
| Dec 31, 2024 | 372 | -5.34% | 88,859,921 | -3.13% | 82 | 1.13% | 183 | -21.46% | 134 | 25.23% |
| Sep 30, 2024 | 388 | 1.84% | 91,556,118 | -4.70% | 85 | 1.07% | 230 | 31.43% | 106 | -30.26% |
| Jun 30, 2024 | 377 | -5.04% | 96,039,948 | -0.00% | 88 | 1.13% | 173 | -17.62% | 150 | 14.50% |
| Mar 31, 2024 | 397 | -5.70% | 96,040,379 | -0.06% | 88 | 1.12% | 210 | 3.45% | 131 | -14.38% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| iShares Core S&P Mid-Cap ETF | 3.46M | 3.22% | 2.26K |
| Vanguard US Total Market Shares ETF | 3.41M | 3.19% | 2.52K |
| Vanguard Total Stock Mkt Idx Inv | 3.43M | 3.19% | 68.14K |
| iShares Russell 2000 ETF | 2.74M | 2.55% | 1.34K |
| Vanguard Small Cap Index | 2.68M | 2.50% | 16.07K |
| Invesco Small Cap Value A | 2.45M | 2.28% | -306.04K |
| Vanguard Information Technology ETF | 1.76M | 1.64% | 14.26K |
| Vanguard Institutional Extnd Mkt Idx Tr | 1.65M | 1.54% | 10.63K |
| Invesco Value Opportunities A | 1.60M | 1.49% | -145.79K |
| Swedbank Robur Technology A | 1.50M | 1.40% | - |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| May 27, 2025 | LAUB STEVEN | - | Sell | $101.82K |
| May 19, 2025 | LAUB STEVEN | - | Sell | $202.96K |
| May 09, 2025 | STANG ERIC B | - | Sell | $186.78K |
| May 05, 2025 | Lynch Desmond | SVP, CFO | Sell | $156.87K |
| Apr 22, 2025 | Seraphin Luc | President and CEO | Sell | $56.48K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2025 Q2 | - | 9 |
| 2025 Q1 | - | 7 |
| 2024 Q4 | - | 2 |
| 2024 Q3 | - | - |
| 2024 Q2 | - | 8 |
RMBS Ownership FAQ
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