Rambus Inc.
DE ˙ DB ˙ US7509171069
142,95 € ↓ -5,25 (-3,54%)
2026-06-04
DEL PRIS
SecurityDE:RMB / Rambus Inc.
InstitutionBridgewater Associates, LP
ManagerRay Dalio, Bob Prince
Latest Disclosed Ownership51,854 shares
Latest Disclosed Value $ 4,461,000
Bridgewater Associates, LP reports 66.39% decrease in ownership of RMB / Rambus Inc.

On May 15, 2026 - Bridgewater Associates, LP filed a 13F-HR form disclosing ownership of 51,854 shares of Rambus Inc. (DE:RMB) valued at $3,680,597 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 154,296 shares of Rambus Inc.. This represents a change in shares of -66.39% during the quarter. The current value of the position is $7,412,529 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F RAMBUS INC DEL COM 750917106 51,854 -102,442 -66.39 4,461 -68.54 0.0199
2026-02-13 2025-12-31 13F RAMBUS INC DEL COM 750917106 154,296 -20,818 -11.89 14,178 -22.30 0.0517
2025-11-13 2025-09-30 13F RAMBUS INC DEL COM 750917106 175,114 -51,755 -22.81 18,247 25.63 0.0715
2025-08-13 2025-06-30 13F RAMBUS INC DEL COM 750917106 226,869 148,790 190.56 14,524 259.33 0.0586
2025-05-14 2025-03-31 13F RAMBUS INC DEL COM 750917106 78,079 70,934 992.78 4,043 972.15 0.0188
2025-02-13 2024-12-31 13F RAMBUS INC DEL COM 750917106 7,145 -54,003 -88.32 378 -85.39 0.0017
2024-11-13 2024-09-30 13F RAMBUS INC DEL COM 750917106 61,148 56,259 1,150.73 2,582 799.30 0.0146
2024-08-14 2024-06-30 13F RAMBUS INC DEL COM 750917106 4,889 4,889 287 0.0015
2021-05-14 2021-03-31 13F RAMBUS INC DEL COM 750917106 0 -30,034 -100.00 0 -100.00
2021-02-12 2020-12-31 13F RAMBUS INC DEL COM 750917106 30,034 -16,908 -36.02 524 -18.51 0.0045
2020-11-13 2020-09-30 13F RAMBUS INC DEL COM 750917106 46,942 25,094 114.86 643 93.67 0.0077
2020-08-12 2020-06-30 13F RAMBUS INC DEL COM 750917106 21,848 21,848 -53.46 332 -48.37 0.0056
2020-05-14 2020-03-31 13F RAMBUS INC DEL COM 750917106 0 -25,868 -100.00 0 -100.00
2020-02-13 2019-12-31 13F RAMBUS INC DEL COM 750917106 25,868 25,868 356 0.0036
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.