Rambus Inc.
US ˙ NasdaqGS ˙ US7509171069

SecurityRMBS / Rambus Inc.
InstitutionProfund Advisors Llc
Latest Disclosed Ownership9,342 shares
Latest Disclosed Value $ 803,692
Profund Advisors Llc reports 8.41% decrease in ownership of RMBS / Rambus Inc.

On April 24, 2026 - Profund Advisors Llc filed a 13F-HR form disclosing ownership of 9,342 shares of Rambus Inc. (US:RMBS) valued at $803,692 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 10,200 shares of Rambus Inc.. This represents a change in shares of -8.41% during the quarter. The current value of the position is $1,357,486 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)
2026-04-24 2026-03-31 13F RAMBUS INC DEL COM 750917106 9,342 -858 -8.41 804 -14.30 0.0295
2026-02-06 2025-12-31 13F RAMBUS INC DEL COM 750917106 10,200 360 3.66 937 -8.59 0.0285
2025-11-06 2025-09-30 13F RAMBUS INC DEL COM 750917106 9,840 374 3.95 1,025 69.14 0.0333
2025-08-07 2025-06-30 13F RAMBUS INC DEL COM 750917106 9,466 -250 -2.57 606 20.48 0.0218
2025-05-08 2025-03-31 13F RAMBUS INC DEL COM 750917106 9,716 -1,270 -11.56 503 -13.28 0.0219
2025-02-14 2024-12-31 13F RAMBUS INC DEL COM 750917106 10,986 -769 -6.54 581 16.94 0.0212
2024-11-14 2024-09-30 13F RAMBUS INC DEL COM 750917106 11,755 -1,090 -8.49 496 -34.22 0.0188
2024-08-13 2024-06-30 13F RAMBUS INC DEL COM 750917106 12,845 -311 -2.36 755 -7.26 0.0280
2024-05-08 2024-03-31 13F RAMBUS INC DEL COM 750917106 13,156 1,884 16.71 813 5.72 0.0317
2024-02-14 2023-12-31 13F RAMBUS INC DEL COM 750917106 11,272 264 2.40 769 25.24 0.0330
2023-11-13 2023-09-30 13F RAMBUS INC DEL COM 750917106 11,008 4,569 70.96 614 48.67 0.0340
2023-08-10 2023-06-30 13F RAMBUS INC DEL COM 750917106 6,439 107 1.69 413 27.47 0.0222
2023-05-12 2023-03-31 13F RAMBUS INC DEL COM 750917106 6,332 -430 -6.36 325 33.88 0.0201
2023-02-02 2022-12-31 13F RAMBUS INC DEL COM 750917106 6,762 6,762 242 0.0157
2022-07-30 2022-06-30 13F RAMBUS INC DEL COM 750917106 0 -9,090 -100.00 0 -100.00
2022-05-10 2022-03-31 13F RAMBUS INC DEL COM 750917106 9,090 -953 -9.49 290 -1.69 0.0122
2022-02-08 2021-12-31 13F RAMBUS INC DEL COM 750917106 10,043 -1,140 -10.19 295 18.95 0.0096
2021-11-12 2021-09-30 13F RAMBUS INC DEL COM 750917106 11,183 -2,851 -20.31 248 -25.53 0.0084
2021-08-12 2021-06-30 13F RAMBUS INC DEL COM 750917106 14,034 661 4.94 333 28.08 0.0112
2021-05-14 2021-03-31 13F RAMBUS INC DEL COM 750917106 13,373 1,371 11.42 260 23.81 0.0100
2021-02-09 2020-12-31 13F RAMBUS INC DEL COM 750917106 12,002 12,002 210 0.0092
2020-05-15 2020-03-31 13F RAMBUS INC DEL COM 750917106 0 -11,524 -100.00 0 -100.00
2020-02-18 2019-12-31 13F RAMBUS INC DEL COM 750917106 11,524 -5,546 -32.49 159 -29.02 0.0069
2019-11-12 2019-09-30 13F RAMBUS INC DEL COM 750917106 17,070 17,070 224 0.0113
2019-02-14 2018-12-31 13F RAMBUS INC DEL COM 750917106 0 -20,887 -100.00 0 -100.00
2018-11-13 2018-09-30 13F RAMBUS INC DEL COM 750917106 20,887 -3,631 -14.81 228 -25.73 0.0086
2018-08-13 2018-06-30 13F RAMBUS INC DEL COM 750917106 24,518 2,474 11.22 307 3.72 0.0123
2018-05-14 2018-03-31 13F RAMBUS INC DEL COM 750917106 22,044 5,762 35.39 296 27.59 0.0118
2018-02-14 2017-12-31 13F RAMBUS INC DEL COM 750917106 16,282 2,040 14.32 232 22.11 0.0089
2017-11-13 2017-09-30 13F RAMBUS INC DEL COM 750917106 14,242 -7,122 -33.34 190 -22.13 0.0079
2017-08-11 2017-06-30 13F RAMBUS INC DEL COM 750917106 21,364 2,382 12.55 244 -2.01 0.0111
2017-04-25 2017-03-31 13F RAMBUS INC DEL COM 750917106 18,982 -1,570 -7.64 249 -12.01 0.0111
2017-02-13 2016-12-31 13F RAMBUS INC DEL COM 750917106 20,552 3,284 19.02 283 31.02 0.0130
2016-11-10 2016-09-30 13F RAMBUS INC DEL COM 750917106 17,268 2,770 19.11 216 23.43 0.0103
2016-08-12 2016-06-30 13F RAMBUS INC DEL COM 750917106 14,498 -1,012 -6.52 175 -17.84 0.0085
2016-05-06 2016-03-31 13F RAMBUS INC DEL COM 750917106 15,510 -6,459 -29.40 213 -16.47 0.0110
2016-02-05 2015-12-31 13F RAMBUS INC DEL COM 750917106 21,969 11,769 115.38 255 131.82 0.0121
2014-05-07 2014-03-31 13F RAMBUS INC DEL COM 750917106 10,200 10,200 110 0.0050
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.