Summit Materials, Inc.
US ˙ NYSE ˙ US86614U1007
DETTE SYMBOL ER IKKE LÆNGERE AKTIVT

SecuritySUM / Summit Materials, Inc.
InstitutionAperio Group, LLC
Latest Disclosed Ownership23,758 shares
Latest Disclosed Value $ 477,000
Aperio Group, LLC reports 4.32% increase in ownership of SUM / Summit Materials, Inc.

On February 5, 2021 - Aperio Group, LLC filed a 13F-HR form disclosing ownership of 23,758 shares of Summit Materials, Inc. (US:SUM) valued at $469,085 USD as of December 31, 2020. The entity filed a previous 13F-HR on November 6, 2020 disclosing 22,774 shares of Summit Materials, Inc.. This represents a change in shares of 4.32% during the quarter. The current value of the position is $1,247,057 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 SUMMIT MATLS CL A 86614U100 23,758 984 4.32 477 26.53 0.0014
2020-11-06 2020-09-30 13F SUMMIT MATLS CL A 86614U100 22,774 933 4.27 377 7.41 0.0013
2020-08-13 2020-06-30 13F SUMMIT MATLS CL A 86614U100 21,841 -11,859 -35.19 351 -30.63 0.0013
2020-05-05 2020-03-31 13F SUMMIT MATLS CL A 86614U100 33,700 -17,576 -34.28 506 -58.69 0.0022
2020-02-13 2019-12-31 13F SUMMIT MATLS CL A 86614U100 51,276 -1,124 -2.15 1,225 5.33 0.0044
2019-11-06 2019-09-30 13F SUMMIT MATLS CL A 86614U100 52,400 -1,424 -2.65 1,163 12.26 0.0046
2019-07-30 2019-06-30 13F SUMMIT MATLS CL A 86614U100 53,824 1,795 3.45 1,036 25.42 0.0042
2019-05-13 2019-03-31 13F SUMMIT MATLS CL A 86614U100 52,029 -3,208 -5.81 826 20.58 0.0036
2019-05-06 2018-12-31 13F/A-1 SUMMIT MATLS CL A 86614U100 55,237 37,948 219.49 685 118.15 0.0035
2019-02-14 2018-12-31 13F SUMMIT MATLS CL A 86614U100 55,237 37,948 685
2019-05-06 2018-09-30 13F/A-1 SUMMIT MATLS CL A 86614U100 17,289 5,658 48.65 314 2.95 0.0014
2018-10-17 2018-09-30 13F SUMMIT MATLS INC CL A COMMON 86614U100 17,289 5,658 314
2019-05-06 2018-06-30 13F/A-1 SUMMIT MATLS CL A 86614U100 11,631 -1,091 -8.58 305 -20.78 0.0015
2018-07-30 2018-06-30 13F SUMMIT MATLS INC CL A COMMON 86614U100 11,631 -1,091 305
2019-05-01 2018-03-31 13F/A-1 SUMMIT MATLS CL A 86614U100 12,722 -3,699 -22.53 385 -25.39 0.0019
2018-05-08 2018-03-31 13F SUMMIT MATLS INC CL A COMMON 86614U100 12,722 -3,699 385
2019-05-01 2017-12-31 13F/A-1 SUMMIT MATLS CL A 86614U100 16,421 0 516 0.0027
2018-02-02 2017-12-31 13F SUMMIT MATLS INC CL A COMMON 86614U100 16,421 516
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.