Stocks › RMBS
RAMBUS INC
RMBS·Nasdaq·
United States·USD
United States·USD$114.09
+3.79 (+3.44%)
Close · Oct 6, 2026 · Close Prices from Tiingo.com
RMBS
RAMBUS INC · Nasdaq
Nasdaq 100S&P 500
Filings
Default90D1Y5YALL
RMBSS&P 500 (rebased)
Congress BuyCongress SellInsider BuyInsider SellForm 1448-K ResultsLobbying
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Daily closes, adjusted for splits and dividends · Close Prices from Tiingo.comHover a marker, every one is a filing · move across the line for the crosshair
Congressional Trades
Recent trades of RMBS by members of U.S. Congress · 15 on record
Whale Activity
Position changes in RMBS reported for 2026-06-30 by 9 tracked institutional filers
- Increased5
- New0
- Held0
- Decreased3
- Closed0
- No prior filing1
| Filer | Shares | Value | Change |
|---|---|---|---|
| BlackRock, Inc. | 14.0M | $1.85B | decreased |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 6.1M | $805.5M | decreased |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.9M | $647.0M | increased |
| D. E. Shaw & Co., Inc. | 739.7K | $98.2M | increased |
| MILLENNIUM MANAGEMENT LLC | 472.8K | $62.8M | increased |
| CITADEL ADVISORS LLC | 400.2K | $53.1M | increased |
| Champlain Investment Partners, LLC | 299.4K | $39.7M | — |
| TWO SIGMA INVESTMENTS, LP | 222.9K | $29.6M | increased |
| Bridgewater Associates, LP | 3,871 | $514K | decreased |
KeyVex tracks a curated set of large 13F filers plus the largest positions in recent filings, so this is a sample of institutional activity, not the whole market.
Insider Trading
Net shares bought (+) or sold (−) on the open market by RMBS insiders, by quarter · Form 4
Recent Insider Transactions
1,516 transactions on record · newest first
| Insider | Type | Shares | Price | Value | Date | |
|---|---|---|---|---|---|---|
| KISSNER CHARLESDirector · Director | Sale | −5,000 | $111.00 | $555K | Oct 2, 2026 | Form 4 ↗ |
| KISSNER CHARLESDirector · Director | Sale | −5,000 | $105.00 | $525K | Sep 22, 2026 | Form 4 ↗ |
| KISSNER CHARLESDirector · Director | Sale | −5,000 | $100.92 | $505K | Aug 7, 2026 | Form 4 ↗ |
| Sayiner NecipDirector | Sale | −5,000 | $170.15 | $851K | Jun 3, 2026 | Form 4 ↗ |
| Higashi EmikoDirector | Sale | −5,000 | $158.00 | $790K | Jun 2, 2026 | Form 4 ↗ |
| Higashi EmikoDirector | Sale | −5,000 | $163.00 | $815K | Jun 2, 2026 | Form 4 ↗ |
| STANG ERIC BDirector | Sale | −5,000 | $146.00 | $730K | Jun 1, 2026 | Form 4 ↗ |
| Higashi EmikoDirector | Sale | −5,000 | $157.57 | $788K | May 26, 2026 | Form 4 ↗ |
| FAN XIANZHI SEANEVP, COO | Sale | −100 | $152.35 | $15K | May 26, 2026 | Form 4 ↗ |
| FAN XIANZHI SEANEVP, COO | Sale | −37.8K | $151.69 | $5.7M | May 26, 2026 | Form 4 ↗ |
| Shinn JohnSVP, General Counsel | Sale | −1,000 | $143.63 | $144K | May 22, 2026 | Form 4 ↗ |
| Sayiner NecipDirector | Sale | −9,824 | $130.18 | $1.3M | May 8, 2026 | Form 4 ↗ |
| LAUB STEVENDirector | Sale | −1,500 | $125.52 | $188K | May 7, 2026 | Form 4 ↗ |
| Gagneja SumeetSVP, CFO | Grant / award | +26.8K | $0.00 | $0 | May 1, 2026 | Form 4 ↗ |
| Gagneja SumeetSVP, CFO | Grant / award | +14.5K | $0.00 | $0 | May 1, 2026 | Form 4 ↗ |
| Rao MeeraDirector | Sale | −2,972 | $150.30 | $447K | Apr 24, 2026 | Form 4 ↗ |
| Rao MeeraDirector | Sale | −8,538 | $118.08 | $1.0M | Apr 14, 2026 | Form 4 ↗ |
| Allen John KChief Accounting Officer | Tax withholding | −1,131 | $92.22 | $104K | Apr 3, 2026 | Form 4 ↗ |
| Seraphin LucPresident and CEO · Director | Sale | −165 | $88.35 | $15K | Apr 2, 2026 | Form 4 ↗ |
| Seraphin LucPresident and CEO · Director | Sale | −2,750 | $87.11 | $240K | Apr 2, 2026 | Form 4 ↗ |
Fund Holders
Mutual funds and ETFs holding RMBS · SEC Form N-PORT
| Fund | Shares | Value | % of fund | As of |
|---|---|---|---|---|
| iShares Core S&P Mid-Cap ETF iShares Trust | 3.7M | $491.2M | 0.40% | Jun 30, 2026 |
| VANGUARD TOTAL STOCK MARKET INDEX FUND VANGUARD INDEX FUNDS | 3.4M | $455.5M | 0.02% | Jun 30, 2026 |
| VANGUARD SMALL-CAP INDEX FUND VANGUARD INDEX FUNDS | 2.5M | $329.1M | 0.17% | Jun 30, 2026 |
| iShares Semiconductor ETF iShares Trust | 2.3M | $304.6M | 0.64% | Jun 30, 2026 |
| Invesco Small Cap Value Fund AIM Sector Funds (Invesco Sector Funds) | 3.0M | $277.3M | 2.50% | Jul 31, 2026 |
| Strategic Advisers Fidelity U.S. Total Stock Fund Fidelity Rutland Square Trust II | 1.8M | $258.7M | 0.10% | May 31, 2026 |
| Invesco Value Opportunities Fund AIM Sector Funds (Invesco Sector Funds) | 2.5M | $227.3M | 2.50% | Jul 31, 2026 |
| iShares Russell 2000 ETF iSHARES TRUST | 2.6M | $227.2M | 0.32% | Mar 31, 2026 |
| VANGUARD INFORMATION TECHNOLOGY INDEX FUND VANGUARD WORLD FUND | 1.4M | $207.0M | 0.12% | May 31, 2026 |
| VANGUARD SMALL-CAP GROWTH INDEX FUND VANGUARD INDEX FUNDS | 1.4M | $189.9M | 0.40% | Jun 30, 2026 |
Mutual funds and ETFs whose N-PORT filings list RMBS's shares (CUSIP 750917106), each fund at its latest report since Mar 7, 2026, largest positions first. Bonds, options and short positions are left out.
Activist & Passive Stakes
Schedule 13D / 13G beneficial-ownership filings
- BlackRock, Inc.SCHEDULE 13G/A · passive (13G) · 13.2M shares12.2%
Jul 29, 2026 · ↗ - Abigail P. JohnsonSCHEDULE 13G · passive (13G) · 11.3M shares10.4%
Jun 5, 2026 · ↗ - FMR LLCSCHEDULE 13G · passive (13G) · 11.3M shares10.4%
Jun 5, 2026 · ↗ - T. Rowe Price Associates, Inc.SCHEDULE 13G/A · passive (13G) · 3.4M shares3.1%
May 15, 2026 · ↗ - Invesco Ltd.SCHEDULE 13G · passive (13G) · 6.5M shares6.0%
May 6, 2026 · ↗
Corporate Lobbying
Estimated quarterly lobbying spending reported under the LDA, filings naming rambus as client
Government Contracts
Federal awards to RAMBUS INC · USAspending
No federal contract awards found for RAMBUS INC.
U.S. Patents
Recent USPTO applications naming RAMBUS INC
No USPTO patent applications found for RAMBUS INC.
Annual Financials
From RMBS's 10-K filings · XBRL
No annual XBRL figures on record for RMBS. KeyVex's fundamentals cover about 130 large companies so far.
Stock Splits
Every split and reverse split in the price history
- 4-for-1Stock splitJun 15, 2000
Split dates and ratios from the price history · Close Prices from Tiingo.com
About RAMBUS INC
From SEC EDGAR company records
Industry (SIC 3674)Semiconductors & Related Devices
SectorTechnology
HeadquartersSAN JOSE, CA
IncorporatedDE
SEC CIK0000917273 ↗