Rambus Inc.
US ˙ NasdaqGS ˙ US7509171069

SecurityRMBS / Rambus Inc.
InstitutionAperio Group, LLC
Latest Disclosed Ownership33,617 shares
Latest Disclosed Value $ 587,000
Aperio Group, LLC reports 5.30% increase in ownership of RMBS / Rambus Inc.

On February 5, 2021 - Aperio Group, LLC filed a 13F-HR form disclosing ownership of 33,617 shares of Rambus Inc. (US:RMBS) valued at $586,953 USD as of December 31, 2020. The entity filed a previous 13F-HR on November 6, 2020 disclosing 31,925 shares of Rambus Inc.. This represents a change in shares of 5.30% during the quarter. The current value of the position is $4,884,886 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)
2021-02-05 2020-12-31 13F RAMBUS INC DEL COM 750917106 33,617 1,692 5.30 587 34.32 0.0017
2020-11-06 2020-09-30 13F RAMBUS INC DEL COM 750917106 31,925 3,940 14.08 437 2.82 0.0015
2020-08-13 2020-06-30 13F RAMBUS INC DEL COM 750917106 27,985 -2,080 -6.92 425 27.25 0.0016
2020-05-05 2020-03-31 13F RAMBUS INC DEL COM 750917106 30,065 -4,415 -12.80 334 -29.68 0.0015
2020-02-13 2019-12-31 13F RAMBUS INC DEL COM 750917106 34,480 5,760 20.06 475 25.99 0.0017
2019-11-06 2019-09-30 13F RAMBUS INC DEL COM 750917106 28,720 -3,552 -11.01 377 -3.08 0.0015
2019-07-30 2019-06-30 13F RAMBUS INC DEL COM 750917106 32,272 5,506 20.57 389 38.93 0.0016
2019-05-13 2019-03-31 13F RAMBUS INC DEL COM 750917106 26,766 961 3.72 280 41.41 0.0012
2019-05-06 2018-12-31 13F/A-1 RAMBUS INC DEL COM 750917106 25,805 -143 -0.55 198 -30.04 0.0010
2019-02-14 2018-12-31 13F RAMBUS INC DEL COM 750917106 25,805 -143 198
2019-05-06 2018-09-30 13F/A-1 RAMBUS INC DEL COM 750917106 25,948 -5,097 -16.42 283 -27.25 0.0012
2018-10-17 2018-09-30 13F RAMBUS INC DEL COM COMMON 750917106 25,948 -5,097 283
2019-05-06 2018-06-30 13F/A-1 RAMBUS INC DEL COM 750917106 31,045 -6,227 -16.71 389 -22.36 0.0019
2018-07-30 2018-06-30 13F RAMBUS INC DEL COM COMMON 750917106 31,045 -6,227 389
2019-05-01 2018-03-31 13F/A-1 RAMBUS INC DEL COM 750917106 37,272 -1,473 -3.80 501 -9.07 0.0025
2018-05-08 2018-03-31 13F RAMBUS INC DEL COM COMMON 750917106 37,272 -1,473 501
2019-05-01 2017-12-31 13F/A-1 RAMBUS INC DEL COM 750917106 38,745 2,449 6.75 551 13.61 0.0028
2018-02-02 2017-12-31 13F RAMBUS INC DEL COM COMMON 750917106 38,745 2,449 551
2019-05-01 2017-09-30 13F/A-1 RAMBUS INC DEL COM 750917106 36,296 2,268 6.67 485 24.68 0.0027
2017-10-25 2017-09-30 13F RAMBUS INC DEL COM COMMON 750917106 36,296 2,268 485
2019-04-22 2017-06-30 13F/A-1 RAMBUS INC DEL COM 750917106 34,028 7,419 27.88 389 11.14 0.0024
2017-07-18 2017-06-30 13F RAMBUS INC DEL COM COMMON 750917106 34,028 7,419 389
2019-04-22 2017-03-31 13F/A-1 RAMBUS INC DEL COM 750917106 26,609 -649 -2.38 350 -6.67 0.0024
2017-05-05 2017-03-31 13F RAMBUS INC DEL COM COMMON 750917106 26,609 -649 350
2019-04-22 2016-12-31 13F/A-1 RAMBUS INC DEL COM 750917106 27,258 4,856 21.68 375 33.93 0.0029
2017-02-14 2016-12-31 13F RAMBUS INC DEL COM COMMON 750917106 27,258 4,856 375
2019-04-12 2016-09-30 13F/A-1 RAMBUS INC DEL COM 750917106 22,402 972 4.54 280 8.11 0.0020
2016-11-01 2016-09-30 13F RAMBUS INC DEL COM COMMON 750917106 22,402 972 280
2019-04-12 2016-06-30 13F/A-1 RAMBUS INC DEL COM 750917106 21,430 -1,191 -5.27 259 -16.72 0.0020
2016-08-12 2016-06-30 13F RAMBUS INC DEL COM COMMON 750917106 21,430 -1,191 259
2019-04-12 2016-03-31 13F/A-1 RAMBUS INC DEL COM 750917106 22,621 1,738 8.32 311 28.51 0.0027
2016-04-28 2016-03-31 13F RAMBUS INC DEL COM COMMON 750917106 22,621 1,738 311
2016-01-21 2015-12-31 13F RAMBUS INC DEL COM COMMON 750917106 20,883 9,378 81.51 242 77.94 0.0022
2015-10-19 2015-09-30 13F RAMBUS INC DEL COM COMMON 750917106 11,505 136
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.