램버스 주식회사
US ˙ NasdaqGS ˙ US7509171069

SecurityRMBS / Rambus Inc.
InstitutionFirst Horizon Advisors, Inc.
Latest Disclosed Ownership243 shares
Latest Disclosed Value $ 15,556
First Horizon Advisors, Inc. reports 257.35% increase in ownership of RMBS / Rambus Inc.

On August 6, 2025 - First Horizon Advisors, Inc. filed a 13F-HR form disclosing ownership of 243 shares of Rambus Inc. (US:RMBS) valued at $15,557 USD as of June 30, 2025. The entity filed a previous 13F-HR on April 28, 2025 disclosing 68 shares of Rambus Inc.. This represents a change in shares of 257.35% during the quarter. The current value of the position is $41,152 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)
2025-08-06 2025-06-30 13F RAMBUS COMMON STOCK 750917106 243 175 257.35 16 400.00 0.0004
2025-04-28 2025-03-31 13F RAMBUS COMMON STOCK 750917106 68 18 36.00 4 50.00 0.0001
2025-02-03 2024-12-31 13F RAMBUS COMMON STOCK 750917106 50 0 0.00 3 0.00 0.0001
2024-11-08 2024-09-30 13F RAMBUS COMMON STOCK 750917106 50 7 16.28 2 0.00 0.0001
2024-07-19 2024-06-30 13F RAMBUS COMMON STOCK 750917106 43 13 43.33 3 100.00 0.0001
2024-04-26 2024-03-31 13F RAMBUS COMMON STOCK 750917106 30 5 20.00 2 0.00 0.0001
2024-02-06 2023-12-31 13F RAMBUS COMMON STOCK 750917106 25 0 0.00 2 0.00 0.0001
2023-10-27 2023-09-30 13F RAMBUS COMMON STOCK 750917106 25 -178 -87.68 1 -92.31 0.0001
2023-08-03 2023-06-30 13F RAMBUS COMMON STOCK 750917106 203 0 0.00 13 30.00 0.0005
2023-05-15 2023-03-31 13F RAMBUS COMMON STOCK 750917106 203 203 10 0.0004
2015-11-06 2015-09-30 13F RAMBUS COMMON STOCK 750917106 0 -889 -100.00 0 -100.00
2015-08-03 2015-06-30 13F/A-1 RAMBUS COMMON STOCK 750917106 889 0 0.00 13 18.18 0.0019
2015-07-31 2015-06-30 13F RAMBUS COMMON STOCK 750917106 889 13
2015-05-04 2015-03-31 13F RAMBUS COMMON STOCK 750917106 889 889 0.00 11 0.0016
2015-02-05 2014-12-31 13F RAMBUS COMMON STOCK 750917106 0 -966 -100.00 0 -100.00
2014-11-13 2014-09-30 13F/A-1 RAMBUS COMMON STOCK 750917106 966 0 0.00 12 -14.29 0.0019
2014-11-13 2014-09-30 13F RAMBUS COMMON STOCK 750917106 966 0 12 0.0012
2014-08-07 2014-06-30 13F RAMBUS COMMON STOCK 750917106 966 966 14 0.0020
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.