Rambus Inc.
DE ˙ DB ˙ US7509171069
142,95 € ↓ -5,25 (-3,54%)
2026-06-04
DEL PRIS
SecurityDE:RMB / Rambus Inc.
InstitutionPnc Financial Services Group, Inc.
Latest Disclosed Ownership12,328 shares
Latest Disclosed Value $ 1,060,578
Pnc Financial Services Group, Inc. reports 4.94% decrease in ownership of RMB / Rambus Inc.

On May 8, 2026 - Pnc Financial Services Group, Inc. filed a 13F-HR form disclosing ownership of 12,328 shares of Rambus Inc. (DE:RMB) valued at $875,041 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 12,969 shares of Rambus Inc.. This represents a change in shares of -4.94% during the quarter. The current value of the position is $1,762,288 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)
2026-05-08 2026-03-31 13F RAMBUS INC DEL COM 750917106 12,328 -641 -4.94 1,061 -11.00 0.0001
2026-02-06 2025-12-31 13F RAMBUS INC DEL COM 750917106 12,969 962 8.01 1,192 -4.80 0.0007
2025-11-07 2025-09-30 13F RAMBUS INC DEL COM 750917106 12,007 -3,119 -20.62 1,251 29.24 0.0008
2025-08-08 2025-06-30 13F RAMBUS INC DEL COM 750917106 15,126 -43 -0.28 968 23.31 0.0006
2025-05-09 2025-03-31 13F RAMBUS INC DEL COM 750917106 15,169 -1,115 -6.85 785 -8.72 0.0004
2025-02-07 2024-12-31 13F RAMBUS INC DEL COM 750917106 16,284 6,781 71.36 861 114.46 0.0006
2024-11-08 2024-09-30 13F RAMBUS INC DEL COM 750917106 9,503 2,012 26.86 401 -8.86 0.0003
2024-08-09 2024-06-30 13F RAMBUS INC DEL COM 750917106 7,491 1,253 20.09 440 14.29 0.0003
2024-05-10 2024-03-31 13F RAMBUS INC DEL COM 750917106 6,238 2,444 64.42 386 49.22 0.0003
2024-03-22 2023-12-31 13F/A-1 RAMBUS INC DEL COM 750917106 3,794 -3,583 -48.57 259 -37.23 0.0002
2024-02-09 2023-12-31 13F RAMBUS INC DEL COM 750917106 3,794 -3,583 259 0.0002
2023-11-13 2023-09-30 13F RAMBUS INC DEL COM 750917106 7,377 62 0.85 412 -12.37 0.0004
2023-08-11 2023-06-30 13F RAMBUS INC DEL COM 750917106 7,315 1,009 16.00 469 45.20 0.0004
2023-05-15 2023-03-31 13F RAMBUS INC DEL COM 750917106 6,306 -55 -0.86 323 42.29 0.0003
2023-02-10 2022-12-31 13F RAMBUS INC DEL COM 750917106 6,361 122 1.96 228 43.67 0.0002
2022-11-10 2022-09-30 13F RAMBUS INC DEL COM 750917106 6,239 527 9.23 158 29.51 0.0002
2022-08-12 2022-06-30 13F RAMBUS INC DEL COM 750917106 5,712 23 0.40 122 -32.60 0.0001
2022-05-12 2022-03-31 13F RAMBUS INC DEL COM 750917106 5,689 142 2.56 181 10.37 0.0002
2022-02-11 2021-12-31 13F RAMBUS INC DEL COM 750917106 5,547 -48 -0.86 164 31.20 0.0001
2021-11-05 2021-09-30 13F RAMBUS INC DEL COM 750917106 5,595 64 1.16 125 -5.30 0.0001
2021-08-06 2021-06-30 13F RAMBUS INC DEL COM 750917106 5,531 -115 -2.04 132 20.00 0.0001
2021-05-07 2021-03-31 13F RAMBUS INC DEL COM 750917106 5,646 143 2.60 110 14.58 0.0001
2021-02-12 2020-12-31 13F RAMBUS INC DEL COM 750917106 5,503 165 3.09 96 29.73 0.0001
2020-11-06 2020-09-30 13F RAMBUS INC DEL COM 750917106 5,338 -94 -1.73 74 -11.90 0.0001
2020-08-28 2020-06-30 13F/A-1 RAMBUS INC DEL COM 750917106 5,432 -149 -2.67 84 35.48 0.0001
2020-08-07 2020-06-30 13F RAMBUS INC DEL COM 750917106 5,432 -149 84 17.4416
2020-05-08 2020-03-31 13F RAMBUS INC DEL COM 750917106 5,581 -628 -10.11 62 -28.74 0.0001
2020-02-07 2019-12-31 13F RAMBUS INC DEL COM 750917106 6,209 2,092 50.81 87 58.18 0.0001
2019-11-08 2019-09-30 13F RAMBUS INC DEL COM 750917106 4,117 59 1.45 55 12.24 0.0001
2019-08-09 2019-06-30 13F RAMBUS INC DEL COM 750917106 4,058 418 11.48 49 28.95 0.0000
2019-05-10 2019-03-31 13F RAMBUS INC DEL COM 750917106 3,640 869 31.36 38 80.95 0.0000
2019-02-08 2018-12-31 13F RAMBUS INC DEL COM 750917106 2,771 230 9.05 21 -25.00 0.0000
2018-11-09 2018-09-30 13F RAMBUS INC DEL COM 750917106 2,541 -836 -24.76 28 -33.33 0.0000
2018-08-10 2018-06-30 13F RAMBUS INC DEL COM 750917106 3,377 919 37.39 42 27.27 0.0000
2018-05-11 2018-03-31 13F RAMBUS INC DEL COM 750917106 2,458 -8 -0.32 33 -5.71 0.0000
2018-02-09 2017-12-31 13F RAMBUS INC DEL COM 750917106 2,466 -14 -0.56 35 6.06 0.0000
2017-11-13 2017-09-30 13F RAMBUS INC DEL COM 750917106 2,480 1,826 279.20 33 371.43 0.0000
2017-08-11 2017-06-30 13F RAMBUS INC DEL COM 750917106 654 220 50.69 7 16.67 0.0000
2017-05-12 2017-03-31 13F RAMBUS INC DEL COM 750917106 434 434 6 0.0000
2016-11-04 2016-09-30 13F RAMBUS INC DEL COM 750917106 0 -700 -100.00 0 -100.00
2016-08-05 2016-06-30 13F RAMBUS INC DEL COM 750917106 700 -27 -3.71 8 -20.00 0.0000
2016-05-06 2016-03-31 13F RAMBUS INC DEL COM 750917106 727 25 3.56 10 25.00 0.0000
2016-02-05 2015-12-31 13F RAMBUS INC DEL COM 750917106 702 0 0.00 8 0.00 0.0000
2015-11-06 2015-09-30 13F RAMBUS INC DEL COM 750917106 702 23 3.39 8 -20.00 0.0000
2015-08-05 2015-06-30 13F RAMBUS INC DEL COM 750917106 679 311 84.51 10 100.00 0.0000
2015-05-08 2015-03-31 13F RAMBUS INC DEL COM 750917106 368 -200 -35.21 5 -16.67 0.0000
2015-02-06 2014-12-31 13F/A-1 RAMBUS INC DEL COM 750917106 568 200 54.35 6 20.00 0.0000
2015-02-06 2014-12-31 13F RAMBUS INC DEL COM 750917106 568 6
2014-11-07 2014-09-30 13F RAMBUS INC DEL COM 750917106 368 0 0.00 5 0.00 0.0000
2014-08-08 2014-06-30 13F RAMBUS INC DEL COM 750917106 368 -12 -3.16 5 25.00 0.0000
2014-05-09 2014-03-31 13F RAMBUS INC DEL COM 750917106 380 380 4 0.0000
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.