RAMBUS INC (RMBS) Stock
1 member of Congress disclosed 1 trade in RMBS since 2023: 0 purchases and 1 sale, most recently Thomas R Carper (sale, Aug 10, 2023). 7 of the hedge funds AlphaScala tracks reported RMBS in 13F filings for the quarter ended Jun 30, 2026; the largest reported position is D.E. Shaw's at $98.19M. Company insiders reported 0 open-market buys and 2 sales on SEC Form 4 in the 90 days to Nov 9, 2026.
Which members of Congress traded RAMBUS INC (RMBS)?
Most recent: Thomas R Carper (sale, Aug 10, 2023); records start Aug 10, 2023.
| Politician | Trade date | Type | Amount |
|---|---|---|---|
| Tom Carper D-DE · Senate | 2023-08-10 | sale | $1k – $15k |
From STOCK Act periodic transaction reports. House filings as of Nov 6, 2026.
See all RMBS political trades →Which hedge funds own RMBS?
From 13F filings| Fund | Shares Held | Position Value | Change vs prior Q |
|---|---|---|---|
| D.E. Shaw David Shaw | 740K | $98.19M | +5677% |
| Millennium Management Israel Englander | 473K | $62.76M | +235% |
| Citadel Ken Griffin | 400K | $53.12M | +2326% |
| Duquesne Family Office Stanley Druckenmiller | 173K | $22.96M | NEW |
| Marshall Wace | 56K | $7.49M | +921% |
| Maverick Capital Lee Ainslie | 4K | $572.0K | -67% |
| Bridgewater Associates Ray Dalio | 4K | $513.8K | -93% |
13F holdings as of Jun 30, 2026
Explore all tracked funds →Are RAMBUS INC insiders buying or selling?
SEC Form 4 filings| Date | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| Oct 2, 26 | Kissner Charles | Director | SELL | 5.0K | $555K |
| Sep 22, 26 | Kissner Charles | Director | SELL | 5.0K | $525K |
| Aug 7, 26 | Kissner Charles | Director | SELL | 5.0K | $505K |
SEC Form 4 filings as of Nov 9, 2026
See cluster-buy signals across all tickers →RMBS price chart
Powered by TradingViewWhat does RAMBUS INC do?
Rambus Inc. is a semiconductor solutions provider specializing in high-performance chips and silicon intellectual property for data-intensive computing systems. The company offers DDR memory interface chips, including DDR5 registering clock drivers, multiplexed data buffers, power management integrated circuits, temperature sensors, and client clock drivers, alongside DDR4 memory interface chips. Its silicon IP portfolio encompasses high-speed interface and security IP solutions that enable faster and safer data movement in memory subsystems. Rambus Inc. also provides innovations in security IP and architectures for high-speed memory and chip-to-chip connections, serving data centers, AI infrastructure, 5G, automotive, and IoT applications. These products address critical challenges in bandwidth, capacity, and data protection for cloud, edge, and real-time immersive systems. Founded in 1990 and headquartered in San Jose, California, Rambus Inc. plays a pivotal role in advancing connectivity and performance in modern semiconductor designs.