Silicon Laboratories Inc.
US ˙ NasdaqGS ˙ US8269191024

SecuritySLAB / Silicon Laboratories Inc.
InstitutionAperio Group, LLC
Latest Disclosed Ownership13,074 shares
Latest Disclosed Value $ 1,665,000
Aperio Group, LLC reports 1.86% increase in ownership of SLAB / Silicon Laboratories Inc.

On February 5, 2021 - Aperio Group, LLC filed a 13F-HR form disclosing ownership of 13,074 shares of Silicon Laboratories Inc. (US:SLAB) valued at $1,664,843 USD as of December 31, 2020. The entity filed a previous 13F-HR on November 6, 2020 disclosing 12,835 shares of Silicon Laboratories Inc.. This represents a change in shares of 1.86% during the quarter. The current value of the position is $2,851,570 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 SILICON LABORATORIES COM 826919102 13,074 239 1.86 1,665 32.56 0.0049
2020-11-06 2020-09-30 13F SILICON LABORATORIES COM 826919102 12,835 -1,254 -8.90 1,256 -11.11 0.0042
2020-08-13 2020-06-30 13F SILICON LABORATORIES COM 826919102 14,089 -3,652 -20.59 1,413 -6.73 0.0052
2020-05-05 2020-03-31 13F SILICON LABORATORIES COM 826919102 17,741 869 5.15 1,515 -22.59 0.0067
2020-02-13 2019-12-31 13F SILICON LABORATORIES COM 826919102 16,872 754 4.68 1,957 9.03 0.0070
2019-11-06 2019-09-30 13F SILICON LABORATORIES COM 826919102 16,118 700 4.54 1,795 12.61 0.0071
2019-07-30 2019-06-30 13F SILICON LABORATORIES COM 826919102 15,418 5,370 53.44 1,594 96.31 0.0065
2019-05-13 2019-03-31 13F SILICON LABORATORIES COM 826919102 10,048 150 1.52 812 4.10 0.0035
2019-05-06 2018-12-31 13F/A-1 SILICON LABORATORIES COM 826919102 9,898 1,010 11.36 780 -4.41 0.0039
2019-02-14 2018-12-31 13F SILICON LABORATORIES COM 826919102 9,998 1,110 788
2019-05-06 2018-09-30 13F/A-1 SILICON LABORATORIES COM 826919102 8,888 1,473 19.87 816 10.42 0.0036
2018-10-17 2018-09-30 13F SILICON LABORATORIES COMMON 826919102 8,888 1,473 816
2019-05-06 2018-06-30 13F/A-1 SILICON LABORATORIES COM 826919102 7,415 1,179 18.91 739 31.73 0.0035
2018-07-30 2018-06-30 13F SILICON LABORATORIES COMMON 826919102 7,415 1,179 739
2019-05-01 2018-03-31 13F/A-1 SILICON LABORATORIES COM 826919102 6,236 361 6.14 561 8.09 0.0028
2018-05-08 2018-03-31 13F SILICON LABORATORIES FOREIGN 826919102 6,236 361 561
2019-05-01 2017-12-31 13F/A-1 SILICON LABORATORIES COM 826919102 5,875 720 13.97 519 25.97 0.0027
2018-02-02 2017-12-31 13F SILICON LABORATORIES COMMON 826919102 5,875 720 519
2019-05-01 2017-09-30 13F/A-1 SILICON LABORATORIES COM 826919102 5,155 432 9.15 412 27.55 0.0023
2017-10-25 2017-09-30 13F SILICON LABORATORIES COMMON 826919102 5,155 432 412
2019-04-22 2017-06-30 13F/A-1 SILICON LABORATORIES COM 826919102 4,723 -953 -16.79 323 -22.54 0.0020
2017-07-18 2017-06-30 13F SILICON LABORATORIES COMMON 826919102 4,723 -953 323
2019-04-22 2017-03-31 13F/A-1 SILICON LABORATORIES COM 826919102 5,676 1,203 26.89 417 43.30 0.0029
2017-05-05 2017-03-31 13F SILICON LABORATORIES COMMON 826919102 5,676 1,203 417
2019-04-22 2016-12-31 13F/A-1 SILICON LABORATORIES COM 826919102 4,473 471 11.77 291 23.83 0.0022
2017-02-14 2016-12-31 13F SILICON LABORATORIES COMMON 826919102 4,473 471 291
2019-04-12 2016-09-30 13F/A-1 SILICON LABORATORIES COM 826919102 4,002 0 235 0.0017
2016-11-01 2016-09-30 13F SILICON LABORATORIES COMMON 826919102 4,002 235
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.