Rambus Inc.
US ˙ NasdaqGS ˙ US7509171069

SecurityRMBS / Rambus Inc.
InstitutionAxa S.a.
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Axa S.a. closes position in RMBS / Rambus Inc.

On November 14, 2025 - Axa S.a. filed a 13F-HR form disclosing ownership of 0 shares of Rambus Inc. (US:RMBS) valued at $0 USD as of September 30, 2025. The entity filed a previous 13F-HR on August 14, 2025 disclosing 25,227 shares of Rambus Inc.. The current value of the position is $0 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)
2025-11-14 2025-09-30 13F RAMBUS INC DEL COM 750917106 0 -100.00 0
2025-08-14 2025-06-30 13F RAMBUS INC DEL COM 750917106 25,227 25,227 1,615 0.0046
2025-05-15 2025-03-31 13F RAMBUS INC DEL COM 750917106 0 -16,407 -100.00 0 -100.00
2025-02-14 2024-12-31 13F RAMBUS INC DEL COM 750917106 16,407 -890 -5.15 867 18.77 0.0026
2024-11-14 2024-09-30 13F RAMBUS INC DEL COM 750917106 17,297 -17,660 -50.52 730 -64.46 0.0022
2025-02-25 2024-06-30 13F/A-1 RAMBUS INC DEL COM 750917106 34,957 -117,524 -77.07 2,054 -78.20 0.0061
2024-08-14 2024-06-30 13F RAMBUS INC DEL COM 750917106 34,957 -117,524 2,054 0.0061
2024-05-15 2024-03-31 13F RAMBUS INC DEL COM 750917106 152,481 -38,545 -20.18 9,425 -27.71 0.0283
2024-07-16 2023-12-31 13F/A-1 RAMBUS INC DEL COM 750917106 191,026 -63,774 -25.03 13,038 -8.29 0.0420
2024-02-14 2023-12-31 13F RAMBUS INC DEL COM 750917106 191,026 -63,774 13,038 0.0255
2023-11-14 2023-09-30 13F RAMBUS INC DEL COM 750917106 254,800 6,900 2.78 14,215 -10.64 0.0500
2023-08-14 2023-06-30 13F RAMBUS INC DEL COM 750917106 247,900 -19,058 -7.14 15,908 16.25 0.0529
2023-05-15 2023-03-31 13F RAMBUS INC DEL COM 750917106 266,958 9,689 3.77 13,684 48.50 0.0471
2023-02-14 2022-12-31 13F RAMBUS INC DEL COM 750917106 257,269 155,069 151.73 9,215 254.83 0.0333
2023-02-14 2022-09-30 13F/A-1 Rambus COM 750917106 102,200 102,200 2,598 0.0102
2022-11-14 2022-09-30 13F Rambus COM 750917106 102,200 102,200 2,598 0.0102
2022-08-15 2022-06-30 13F Rambus COM 750917106 0 -191,600 -100.00 0 -100.00
2023-02-14 2022-03-31 13F/A-1 Rambus COM 750917106 191,600 -8,300 -4.15 6,110 4.00 0.0174
2022-05-13 2022-03-31 13F Rambus COM 750917106 191,600 -8,300 6,111 0.0174
2022-02-14 2021-12-31 13F Rambus COM 750917106 199,900 -115,200 -36.56 5,875 -16.01 0.0150
2021-11-15 2021-09-30 13F Rambus COM 750917106 315,100 0 0.00 6,995 -6.37 0.0196
2021-08-13 2021-06-30 13F/A-1 Rambus COM 750917106 315,100 -76,400 -19.51 7,471 -1.84 0.0211
2021-08-13 2021-06-30 13F Rambus COM 750917106 315,100 -76,400 7,471 0.0126
2021-05-14 2021-03-31 13F Rambus COM 750917106 391,500 -2,900 -0.74 7,611 10.53 0.0232
2021-02-12 2020-12-31 13F Rambus COM 750917106 394,400 0 0.00 6,886 27.54 0.0216
2021-02-11 2020-09-30 13F/A-1 Rambus COM 750917106 394,400 -9,100 -2.26 5,399 -11.97 0.0195
2020-11-13 2020-09-30 13F Rambus COM 750917106 394,400 -9,100 5,399 10,777.2609
2021-02-12 2020-06-30 13F/A-1 RAMBUS INC DEL COM 750917106 403,500 35,400 9.62 6,133 50.10 0.0242
2020-08-14 2020-06-30 13F RAMBUS INC DEL COM 750917106 403,500 35,400 6,133 24,186.3805
2021-02-12 2020-03-31 13F/A-2 RAMBUS INC DEL COM 750917106 368,100 37,700 11.41 4,086 -10.22 0.0204
2020-06-15 2020-03-31 13F/A-1 RAMBUS INC DEL COM 750917106 368,100 0 4,086 0.0204
2020-05-15 2020-03-31 13F RAMBUS INC DEL COM 750917106 368,100 37,700 4,086 11,363.2363
2021-02-12 2019-12-31 13F/A-1 RAMBUS INC DEL COM 750917106 330,400 0 0.00 4,551 4.93 0.0185
2020-02-18 2019-12-31 13F RAMBUS INC DEL COM 750917106 330,400 0 4,551 18,530.1160
2021-02-12 2019-09-30 13F/A-1 RAMBUS INC DEL COM 750917106 330,400 -4,175 -1.25 4,337 7.67 0.0173
2019-11-14 2019-09-30 13F RAMBUS INC DEL COM 750917106 330,400 -4,175 4,337 17,283.2211
2021-02-12 2019-06-30 13F/A-1 RAMBUS INC DEL COM 750917106 334,575 263,375 369.91 4,028 441.40 0.0157
2019-08-13 2019-06-30 13F RAMBUS INC DEL COM 750917106 334,575 263,375 4,028 15,796.1218
2019-05-14 2019-03-31 13F RAMBUS INC DEL COM 750917106 71,200 -66,000 -48.10 744 -29.28 0.0029
2019-02-13 2018-12-31 13F RAMBUS INC DEL COM 750917106 137,200 -24,000 -14.89 1,052 -40.19 0.0046
2018-11-08 2018-09-30 13F RAMBUS INC DEL COM 750917106 161,200 -68,000 -29.67 1,759 -38.80 0.0065
2018-08-13 2018-06-30 13F RAMBUS INC DEL COM 750917106 229,200 -55,700 -19.55 2,874 -24.88 0.0110
2018-05-14 2018-03-31 13F RAMBUS INC DEL COM 750917106 284,900 -73,500 -20.51 3,826 -24.92 0.0153
2018-02-13 2017-12-31 13F RAMBUS INC DEL COM 750917106 358,400 298,600 499.33 5,096 538.60 0.0200
2017-12-01 2017-09-30 13F/A-1 RAMBUS INC DEL COM 750917106 59,800 59,800 798 0.0034
2017-11-13 2017-09-30 13F RAMBUS INC DEL COM 750917106 59,800 798 0.0034
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.