Rambus Inc.
DE ˙ DB ˙ US7509171069
148,20 € ↑5,25 (3,67%)
2026-06-05
DEL PRIS
SecurityDE:RMB / Rambus Inc.
InstitutionWinton Capital Group Ltd
Latest Disclosed Ownership3,051 shares
Latest Disclosed Value $ 262,478
Winton Capital Group Ltd ownership in RMB / Rambus Inc.

On May 12, 2026 - Winton Capital Group Ltd filed a 13F-HR form disclosing ownership of 3,051 shares of Rambus Inc. (DE:RMB) valued at $216,560 USD as of March 31, 2026. The entity filed a previous 13F-HR on August 14, 2023 disclosing 0 shares of Rambus Inc.. The current value of the position is $452,158 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-12 2026-03-31 13F RAMBUS INC DEL COM 750917106 3,051 3,051 262 0.0092
2023-08-14 2023-06-30 13F RAMBUS INC DEL COM 750917106 0 -70,722 -100.00 0 -100.00
2023-05-12 2023-03-31 13F RAMBUS INC DEL COM 750917106 70,722 -16,476 -18.89 3,625 16.07 0.2210
2023-02-14 2022-12-31 13F RAMBUS INC DEL COM 750917106 87,198 22,852 35.51 3,123 90.89 0.2057
2022-11-10 2022-09-30 13F RAMBUS INC DEL COM 750917106 64,346 34,908 118.58 1,636 158.45 0.1068
2022-08-10 2022-06-30 13F RAMBUS INC DEL COM 750917106 29,438 -1,041 -3.42 633 -34.88 0.0336
2022-05-11 2022-03-31 13F RAMBUS INC DEL COM 750917106 30,479 14,536 91.17 972 107.25 0.0510
2022-02-10 2021-12-31 13F RAMBUS INC DEL COM 750917106 15,943 15,943 469 0.0284
2021-10-28 2021-09-30 13F RAMBUS INC DEL COM 750917106 0 -30,677 -100.00 0 -100.00
2021-08-10 2021-06-30 13F RAMBUS INC DEL COM 750917106 30,677 2,744 9.82 727 33.89 0.0390
2021-07-21 2021-03-31 13F RAMBUS INC DEL COM 750917106 27,933 10,467 59.93 543 78.03 0.0310
2021-02-12 2020-12-31 13F RAMBUS INC DEL COM 750917106 17,466 17,466 305 0.0220
2020-02-13 2019-12-31 13F RAMBUS INC DEL COM 750917106 0 -86,571 -100.00 0 -100.00
2019-11-08 2019-09-30 13F RAMBUS INC DEL COM 750917106 86,571 86,571 1,136 0.0134
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.