Rambus Inc.
IT ˙ BIT ˙ US7509171069
140,00 € ↑15,65 (12,59%)
2026-06-03
AKTIENPREIS
SecurityIT:1RMBS / Rambus Inc.
InstitutionKBC Group NV
Latest Disclosed Ownership3,316 shares
Latest Disclosed Value $ 285
KBC Group NV ownership in 1RMBS / Rambus Inc.

On May 7, 2026 - KBC Group NV filed a 13F-HR form disclosing ownership of 3,316 shares of Rambus Inc. (IT:1RMBS) valued at $241,736 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 3,316 shares of Rambus Inc.. The current value of the position is $464,240 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)
2026-05-07 2026-03-31 13F RAMBUS INC DEL COM 750917106 3,316 0 0.00 0 0.0007
2026-01-26 2025-12-31 13F RAMBUS INC DEL COM 750917106 3,316 357 12.06 0 0.0007
2026-01-20 2025-09-30 13F RAMBUS INC DEL COM 750917106 2,959 0 0.00 0 0.0007
2025-08-08 2025-06-30 13F RAMBUS INC DEL COM 750917106 2,959 -1,806 -37.90 0 0.0005
2025-04-25 2025-03-31 13F RAMBUS INC DEL COM 750917106 4,765 757 18.89 0 0.0008
2025-01-22 2024-12-31 13F RAMBUS INC DEL COM 750917106 4,008 1,419 54.81 0 0.0006
2024-11-06 2024-09-30 13F RAMBUS INC DEL COM 750917106 2,589 0 0.00 0 0.0003
2024-07-17 2024-06-30 13F RAMBUS INC DEL COM 750917106 2,589 338 15.02 0 0.0005
2024-05-08 2024-03-31 13F RAMBUS INC DEL COM 750917106 2,251 0 0.00 0 0.0004
2024-02-13 2023-12-31 13F RAMBUS INC DEL COM 750917106 2,251 -105 -4.46 0 0.0005
2024-02-15 2023-09-30 13F/A-1 RAMBUS INC DEL COM 750917106 2,356 -6,057 -72.00 0 0.0005
2023-11-22 2023-09-30 13F RAMBUS INC DEL COM 750917106 8,413 0 1 0.0022
2024-02-15 2023-06-30 13F/A-1 RAMBUS INC DEL COM 750917106 8,413 -586 -6.51 1 0.0022
2023-07-28 2023-06-30 13F RAMBUS INC DEL COM 750917106 8,413 -586 1 0.0022
2024-02-14 2023-03-31 13F/A-1 RAMBUS INC DEL COM 750917106 8,999 -640 -6.64 0 0.0020
2023-05-04 2023-03-31 13F RAMBUS INC DEL COM 750917106 8,999 -640 0 0.0022
2024-02-14 2022-12-31 13F/A-1 RAMBUS INC DEL COM 750917106 9,639 0 0.00 0 0.0017
2023-02-13 2022-12-31 13F RAMBUS INC DEL COM 750917106 9,639 0 0 0.0000
2024-02-15 2022-09-30 13F/A-1 RAMBUS INC DEL COM 750917106 9,639 0 0.00 0 0.0013
2022-11-08 2022-09-30 13F RAMBUS INC DEL COM 750917106 9,639 0 245 0.0013
2024-02-14 2022-06-30 13F/A-1 RAMBUS INC DEL COM 750917106 9,639 5,684 143.72 0 -100.00 0.0010
2022-07-26 2022-06-30 13F RAMBUS INC DEL COM 750917106 9,639 5,684 207 0.0010
2024-02-14 2022-03-31 13F/A-1 RAMBUS INC DEL COM 750917106 3,955 0 0.00 0 0.0005
2022-05-06 2022-03-31 13F RAMBUS INC DEL COM 750917106 3,955 0 126 0.0005
2024-02-14 2021-12-31 13F/A-1 RAMBUS INC DEL COM 750917106 3,955 0 0.00 0 -100.00 0.0004
2022-02-03 2021-12-31 13F RAMBUS INC DEL COM 750917106 3,955 0 116 0.0004
2021-11-10 2021-09-30 13F RAMBUS INC DEL COM 750917106 3,955 0 0.00 88 -6.38 0.0003
2022-02-15 2021-06-30 13F/A-1 RAMBUS INC DEL COM 750917106 3,955 0 0.00 94 22.08 0.0003
2021-08-11 2021-06-30 13F RAMBUS INC DEL COM 750917106 3,955 0 94 0.0003
2022-02-14 2021-03-31 13F/A-1 RAMBUS INC DEL COM 750917106 3,955 0 0.00 77 -88.86 0.0003
2021-04-26 2021-03-31 13F RAMBUS COM 750917106 3,955 0 77 0.0003
2022-02-14 2020-12-31 13F/A-1 RAMBUS INC DEL COM 750917106 3,955 0 0.00 691 1,179.63 0.0003
2021-02-10 2020-12-31 13F RAMBUS INC DEL COM 750917106 3,955 0 69 0.0003
2022-02-14 2020-09-30 13F/A-1 RAMBUS INC DEL COM 750917106 3,955 0 0.00 54 -10.00 0.0003
2020-10-28 2020-09-30 13F RAMBUS INC DEL COM 750917106 3,955 0 54 0.0003
2022-02-14 2020-06-30 13F/A-1 RAMBUS INC DEL COM 750917106 3,955 1,786 82.34 60 150.00 0.0004
2020-08-10 2020-06-30 13F RAMBUS INC DEL COM 750917106 3,955 1,786 60 0.0004
2020-05-04 2020-03-31 13F RAMBUS INC DEL COM 750917106 2,169 -55,137 -96.22 24 -96.96 0.0002
2020-02-11 2019-12-31 13F RAMBUS INC DEL COM 750917106 57,306 0 0.00 789 4.92 0.0050
2019-11-07 2019-09-30 13F RAMBUS INC DEL COM 750917106 57,306 -25,746 -31.00 752 -24.80 0.0055
2019-08-08 2019-06-30 13F/A-1 RAMBUS INC DEL COM 750917106 83,052 -58,955 -41.52 1,000 -32.61 0.0077
2019-07-30 2019-06-30 13F RAMBUS INC DEL COM 750917106 83,052 -58,955 1,000
2019-08-07 2019-03-31 13F/A-1 RAMBUS INC DEL COM 750917106 142,007 0 0.00 1,484 36.27 0.0122
2019-05-10 2019-03-31 13F RAMBUS INC DEL COM 750917106 142,007 0 1,484
2019-01-31 2018-12-31 13F RAMBUS INC DEL COM 750917106 142,007 -56,929 -28.62 1,089 -49.82 0.0121
2018-11-14 2018-09-30 13F RAMBUS INC DEL COM 750917106 198,936 60,367 43.56 2,170 24.86 0.0164
2018-08-03 2018-06-30 13F RAMBUS INC DEL COM 750917106 138,569 40,817 41.76 1,738 32.37 0.0151
2018-08-03 2018-03-31 13F/A-1 RAMBUS INC DEL COM 750917106 97,752 0 0.00 1,313 -5.54 0.0121
2018-05-09 2018-03-31 13F RAMBUS INC DEL COM 750917106 97,752 0 1,313
2018-08-03 2017-12-31 13F/A-1 RAMBUS INC DEL COM 750917106 97,752 0 0.00 1,390 6.51 0.0119
2018-02-07 2017-12-31 13F RAMBUS INC DEL COM 750917106 97,752 0 1,390
2017-11-13 2017-09-30 13F RAMBUS INC DEL COM 750917106 97,752 -49,625 -33.67 1,305 -22.55 0.0118
2017-08-04 2017-06-30 13F RAMBUS INC DEL COM 750917106 147,377 0 0.00 1,685 -13.01 0.0163
2017-05-10 2017-03-31 13F RAMBUS INC DEL COM 750917106 147,377 -12,305 -7.71 1,937 -11.91 0.0175
2017-02-16 2016-12-31 13F RAMBUS INC DEL COM 750917106 159,682 47,047 41.77 2,199 56.18 0.0218
2016-11-03 2016-09-30 13F RAMBUS INC DEL COM 750917106 112,635 -9,438 -7.73 1,408 -4.54 0.0166
2016-08-03 2016-06-30 13F RAMBUS INC DEL COM 750917106 122,073 -49,942 -29.03 1,475 -37.63 0.0211
2016-05-11 2016-03-31 13F RAMBUS INC DEL COM 750917106 172,015 172,015 2,365 0.0393
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.