RAMBUS INC (RMBS) Stock
8 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 3 sales on SEC Form 4 in the 90 days to Oct 21, 2026.
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% |
| Hussman Investment Trust John Hussman | 15K | $1.95M | NEW |
| Maverick Capital Lee Ainslie | 4K | $572.0K | -67% |
| Bridgewater Associates Ray Dalio | 4K | $513.8K | -93% |
13F holdings as of Jun 30, 2026
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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 Oct 21, 2026
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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.