Latest Period
Q2 2026
Security Snapshot
RAMBUS INC - Common Stock (RMBS) Institutional Ownership
CUSIP: 750917106
13F Institutional Holders and Ownership History from Q1 2014 to Q2 2026
Institutions Reporting
617
Shares (Excl. Options)
100,610,781
Price
$132.74
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- Security type / class
- Equity / Common Stock
- Symbol
- RMBS on Nasdaq
- All holders as of 30 Jun 2026
- Q2 2026
- Total 13F shares
- 100,610,781
- Total 13F value
- $13,296,950,912
- Portfolio coverage rank
- 0.01%
- Share change
- -2,437,749
- Value change
- -$128,652,579
- Number of holders
- 617
- Shares outstanding
- 108,228,975
- SEC-reported price per share
- $96.42
- Insider filing price
- $96.42
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- RMBS - RAMBUS INC - Common Stock is tracked under CUSIP 750917106.
- 617 institutions reported positions in Q2 2026.
- 6 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 557 to 617 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $8,826,150,192 to $13,296,950,912.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 617 institutions filings for Q2 2026.
Security key
750917106
Latest holder period
Q2 2026
13F holders
617
13D/G owners
6
CIK / CUSIP context first
Open Q2 2026 holders
RMBS full holder history
RAMBUS INC SEC filings
RAMBUS INC company facts
RAMBUS INC insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 750917106:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
6
Security
RMBS
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 12% | -13% | $1,752,690,332 | -$246,404,864 | 13,203,935 | -12% | BlackRock, Inc. | 30 Jun 2026 |
| FMR LLC | 10% | $1,523,372,780 | 11,296,795 | FMR LLC | 29 May 2026 | |||
| VANGUARD PORTFOLIO MANAGEMENT LLC | 6.2% | $580,054,178 | 6,742,464 | Vanguard Portfolio Management | 31 Mar 2026 | |||
| Invesco Ltd. | 6% | $717,754,861 | 6,499,048 | Invesco Ltd. | 31 Mar 2026 | |||
| VANGUARD CAPITAL MANAGEMENT LLC | 5.2% | $486,204,395 | 5,651,568 | Vanguard Capital Management | 31 Mar 2026 | |||
| PRICE T ROWE ASSOCIATES INC /MD/ | 3.1% | -38% | $372,852,508 | -$221,933,487 | 3,376,064 | -37% | T. Rowe Price Associates, Inc. | 31 Mar 2026 |
As of 30 Jun 2026, 617 institutional investors reported holding 100,610,781 shares of RAMBUS INC - Common Stock (RMBS). This represents 93% of the company’s total 108,228,975 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
67%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 13% | 13,964,477 | -14% | 0.03% | $1,853,644,563 |
| FMR LLC | 9.7% | 10,460,026 | +215% | 0.06% | $1,388,463,915 |
| Invesco Ltd. | 6.1% | 6,632,458 | +2.1% | 0.07% | $880,392,476 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 5.6% | 6,068,516 | -8.7% | 0.04% | $805,534,814 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.5% | 4,874,385 | +0.96% | 0.01% | $647,025,865 |
| STATE STREET CORP | 3.6% | 3,915,113 | -10% | 0.02% | $519,498,009 |
| PRICE T ROWE ASSOCIATES INC /MD/ | 3.1% | 3,334,512 | -1.2% | 0.04% | $442,624,000 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.1% | 2,297,660 | -26% | 0.02% | $305,059,152 |
| JPMORGAN CHASE & CO | 1.9% | 2,101,418 | +14% | 0.02% | $260,985,471 |
| DIMENSIONAL FUND ADVISORS LP | 1.6% | 1,719,400 | -4.2% | 0.04% | $228,190,556 |
| Swedbank AB | 1.5% | 1,646,500 | +5.3% | 0.19% | $218,556,410 |
| NORGES BANK | 1.4% | 1,532,622 | 0.02% | $203,440,244 | |
| MORGAN STANLEY | 1.3% | 1,444,281 | +19% | 0.01% | $191,714,297 |
| NEUBERGER BERMAN GROUP LLC | 1.2% | 1,311,777 | +0.74% | 0.12% | $173,445,614 |
| BANK OF AMERICA CORP /DE/ | 1.1% | 1,218,726 | -10% | 0.01% | $161,773,689 |
| AQR CAPITAL MANAGEMENT LLC | 1.1% | 1,211,009 | -3.2% | 0.05% | $152,478,080 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1% | 1,109,132 | -16% | 0.02% | $147,226,181 |
| EdgePoint Investment Group Inc. | 1% | 1,086,213 | -44% | 1.1% | $144,183,914 |
| Rafferty Asset Management, LLC | 0.91% | 984,388 | +32% | 0.3% | $130,667,663 |
| GOLDMAN SACHS GROUP INC | 0.89% | 960,878 | +4.2% | 0.01% | $127,546,942 |
| BESSEMER GROUP INC | 0.89% | 958,929 | -7.8% | 0.18% | $127,290,000 |
| NORTHERN TRUST CORP | 0.88% | 949,113 | -29% | 0.01% | $125,985,260 |
| Bank of New York Mellon Corp | 0.77% | 828,233 | +6.2% | 0.02% | $109,939,644 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | 0.74% | 797,195 | +678% | 0.08% | $105,819,664 |
| CONGRESS ASSET MANAGEMENT CO | 0.72% | 777,993 | -39% | 0.64% | $103,270,791 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
50
Latest
Q2 2026
Rows shown
1-25 of 50
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q2 | 100,610,781 | $13,296,950,912 | -$128,652,579 | $132.74 | 617 |
| 2026 Q1 | 102,793,511 | $8,826,150,192 | +$214,776,891 | $86.03 | 557 |
| 2025 Q4 | 99,840,591 | $9,179,564,312 | +$54,153,981 | $91.89 | 554 |
| 2025 Q3 | 98,720,954 | $10,287,013,170 | +$329,370,913 | $104.20 | 508 |
| 2025 Q2 | 97,175,851 | $6,221,678,375 | +$55,183,928 | $64.02 | 454 |
| 2025 Q1 | 96,333,210 | $4,988,963,649 | +$67,491,508 | $51.78 | 407 |
| 2024 Q4 | 95,008,872 | $5,022,794,265 | +$134,234,343 | $52.86 | 388 |
| 2024 Q3 | 92,291,982 | $3,897,859,273 | -$134,755,356 | $42.22 | 366 |
| 2024 Q2 | 96,165,643 | $5,648,162,967 | -$55,372,554 | $58.76 | 360 |
| 2024 Q1 | 96,963,181 | $5,982,121,446 | -$4,927,304 | $61.81 | 372 |
| 2023 Q4 | 96,952,912 | $6,617,035,509 | -$48,558,518 | $68.25 | 393 |
| 2023 Q3 | 98,159,619 | $5,476,899,149 | +$107,718,089 | $55.79 | 346 |
| 2023 Q2 | 95,388,175 | $6,120,379,053 | +$115,519,537 | $64.17 | 387 |
| 2023 Q1 | 93,847,033 | $4,809,816,902 | +$165,414,108 | $51.26 | 330 |
| 2022 Q4 | 91,262,173 | $3,269,593,067 | -$57,969,038 | $35.82 | 298 |
| 2022 Q3 | 93,543,335 | $2,378,168,249 | -$64,449,169 | $25.42 | 231 |
| 2022 Q2 | 96,128,813 | $2,066,646,677 | +$42,078,444 | $21.49 | 242 |
| 2022 Q1 | 93,594,821 | $2,980,992,723 | -$56,899,496 | $31.89 | 263 |
| 2021 Q4 | 95,124,067 | $2,794,059,734 | +$65,910,581 | $29.39 | 248 |
| 2021 Q3 | 93,314,238 | $2,071,337,938 | -$74,736,458 | $22.20 | 229 |
| 2021 Q2 | 97,063,344 | $2,300,634,115 | +$38,471,787 | $23.71 | 215 |
| 2021 Q1 | 95,752,564 | $1,861,230,562 | +$2,038,981 | $19.44 | 207 |
| 2020 Q4 | 95,947,500 | $1,675,889,341 | +$40,079,526 | $17.46 | 212 |
| 2020 Q3 | 95,116,912 | $1,302,181,717 | -$10,592,348 | $13.69 | 182 |
| 2020 Q2 | 95,342,666 | $1,448,975,078 | +$22,552,264 | $15.20 | 194 |