Rambus Inc.
US ˙ NasdaqGS ˙ US7509171069

SecurityRMBS / Rambus Inc.
InstitutionElkfork Partners LLC
Latest Disclosed Ownership20,152 shares
Latest Disclosed Value $ 265,000
Elkfork Partners LLC reports 3.50% increase in ownership of RMBS / Rambus Inc.

On November 14, 2019 - Elkfork Partners LLC filed a 13F-HR form disclosing ownership of 20,152 shares of Rambus Inc. (US:RMBS) valued at $264,495 USD as of September 30, 2019. The entity filed a previous 13F-HR on August 13, 2019 disclosing 19,470 shares of Rambus Inc.. This represents a change in shares of 3.50% during the quarter. The current value of the position is $2,928,287 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)
2019-11-14 2019-09-30 13F Rambus COM 750917106 20,152 682 3.50 265 13.25 0.0064
2019-08-13 2019-06-30 13F Rambus COM 750917106 19,470 924 4.98 234 20.62 0.0057
2019-05-13 2019-03-31 13F Rambus COM 750917106 18,546 0 0.00 194 36.62 0.0049
2019-02-13 2018-12-31 13F Rambus COM 750917106 18,546 0 0.00 142 -29.70 0.0040
2018-11-14 2018-09-30 13F Rambus COM 750917106 18,546 2,618 16.44 202 1.00 0.0048
2018-08-13 2018-06-30 13F Rambus COM 750917106 15,928 0 0.00 200 -6.54 0.0051
2018-05-10 2018-03-31 13F Rambus COM 750917106 15,928 3,762 30.92 214 23.70 0.0058
2018-02-24 2017-12-31 13F/A-1 Rambus COM 750917106 12,166 1,980 19.44 173 27.21 0.0047
2018-02-22 2017-12-31 13F Rambus COM 750917106 8,848 -1,338 126
2017-11-14 2017-09-30 13F Rambus COM 750917106 10,186 1,012 11.03 136 29.52 0.0039
2017-08-14 2017-06-30 13F Rambus COM 750917106 9,174 4,136 82.10 105 59.09 0.0032
2017-05-03 2017-03-31 13F Rambus COM 750917106 5,038 -1,034 -17.03 66 -21.43 0.0020
2017-02-10 2016-12-31 13F Rambus COM 750917106 6,072 6,072 84 0.0028
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.