Rambus Ownership | Who Owns Rambus?
Rambus Ownership Summary
Rambus is owned by 90.27% institutional investors, 0.75% insiders, and 8.98% 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 3.25% of its assets in Rambus shares.
RMBS Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Rambus | 90.27% | 0.75% | 8.98% |
| Sector | Technology Stocks | 144.02% | 12.52% | -56.54% |
| Idea | Semiconductor Stocks List | 62.65% | 7.35% | 30.01% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Blackrock | 15.79M | 14.60% | $927.60M |
| Blackrock funding, inc. /de | 15.00M | 13.96% | $960.31M |
| 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 |
| Edgepoint investment group | 2.79M | 2.60% | $178.44M |
| Geode capital management | 2.58M | 2.40% | $136.26M |
| Bank of new york mellon | 2.10M | 1.95% | $110.79M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Park west asset management | 660.00K | 3.20% | $42.25M |
| Analog century management lp | 825.29K | 2.92% | $43.62M |
| Apis capital advisors | 112.00K | 2.55% | $7.17M |
| Emerald advisers | 710.12K | 1.67% | $45.46M |
| Emerald mutual fund advisers trust | 416.12K | 1.62% | $26.64M |
| Penn capital management company | 286.26K | 1.59% | $18.38M |
| Oberweis asset management inc/ | 505.78K | 1.41% | $32.38M |
| Edgepoint investment group | 2.79M | 1.35% | $178.44M |
| Mesirow institutional investment management | 298.17K | 1.21% | $15.76M |
| Stanley-laman group | 103.31K | 0.98% | $6.61M |
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 |
| Edgepoint investment group | 2.79M | 1.35% | 1.62M |
| Congress asset management co /ma | 866.03K | 0.31% | 866.03K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| American century companies | 32.95K | 0.00% | -1.39M |
| Rafferty asset management | - | - | -871.31K |
| Vaughan nelson investment management | - | - | -562.81K |
| Voloridge investment management | - | - | -551.77K |
| Artisan partners limited partnership | - | - | -469.44K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Norges bank | 1.79M | 0.01% | 1.79M | $94.37M |
| 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 |
| T. rowe price investment management | 312.95K | 0.01% | 312.95K | $20.04M |
| Glenmede investment management, lp | 297.44K | 0.10% | 297.44K | $19.04M |
Sold Out
| Holder | Change |
|---|---|
| Tfc financial management | -1.00 |
| Claris advisors, llc / mo / | -3.00 |
| Hexagon capital partners | -3.00 |
| Albion financial group /ut | -3.00 |
| Tfo-tdc | -4.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Jun 30, 2025 | 464 | 9.43% | 96,964,608 | 0.64% | 90 | 1.12% | 273 | 17.17% | 129 | -0.77% |
| 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% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| iShares Core S&P Mid-Cap ETF | 3.50M | 3.25% | -6.27K |
| Vanguard US Total Market Shares ETF | 3.41M | 3.19% | 2.52K |
| Vanguard Total Stock Mkt Idx Inv | 3.37M | 3.14% | -71.16K |
| Vanguard Small Cap Index | 2.61M | 2.42% | -17.38K |
| iShares Russell 2000 ETF | 2.55M | 2.37% | -48.51K |
| Vanguard Information Technology ETF | 1.80M | 1.67% | 18.28K |
| Swedbank Robur Technology A | 1.50M | 1.39% | - |
| Vanguard Small Cap Growth Index Inv | 1.47M | 1.37% | -3.79K |
| T. Rowe Price Integrated US SmCapGrEq | 1.43M | 1.33% | 48.80K |
| T. Rowe Price Integrated US Sm Gr Eq | 1.43M | 1.33% | - |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Sep 02, 2025 | Rao Meera | - | Sell | $215.16K |
| Aug 29, 2025 | LAUB STEVEN | - | Sell | $177.99K |
| Aug 13, 2025 | Higashi Emiko | - | Sell | $83.58K |
| Aug 08, 2025 | Sayiner Necip | - | Sell | $551.45K |
| Aug 04, 2025 | Higashi Emiko | - | Sell | $83.33K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2025 Q3 | - | 6 |
| 2025 Q2 | - | 9 |
| 2025 Q1 | - | 7 |
| 2024 Q4 | - | 2 |
| 2024 Q3 | - | - |
RMBS Ownership FAQ
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