Security key
86614U100
SUMMIT MATERIALS INC -CL A - COMMON STOCK (SUM)
CUSIP: 86614U100
Q4 2021 13F Holders as of 31 Dec 2021
- Security type / class
- Equity / COMMON STOCK
- Total 13F shares
- 119,774,981
- Total 13F value
- $4,805,176,555
- Share change
- -1,649,777
- Put/Call ratio
- 16%
- SEC-reported price per share
- $40.14
- Number of holders
- 250
- Value change
- -$56,143,888
- Number of buys
- 120
- Number of sells
- 111
- Shares outstanding
- 178,464,433
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q4 2021
Institutions
250
Top holders
10
SUM full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q3 2025
Summit Materials, Inc. SEC filings
Summit Materials, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 86614U100
Recent filing periods:
Ownership snapshot
Top reported holders of SUM - SUMMIT MATERIALS INC -CL A - COMMON STOCK (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
VANGUARD GROUP INC
Disclosed value leader
VANGUARD GROUP INC
Comparable rows
15/15
Latest evidence
30 Sep 2021
13F
Lead comparable stake: 6.1%
Showing 1-6 of 15 holder rows.
Quick read
VANGUARD GROUP INC leads the comparable SEC ownership view at 6.1%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens VANGUARD GROUP INC's linked filing trail.
Comparable ownership
Top 5
VANGUARD GROUP INC
6.1%
PRICE T ROWE ASSOCIATES INC /MD/
5%
BlackRock Finance, Inc.
4.9%
FMR LLC
4.8%
DIMENSIONAL FUND ADVISORS LP
3.3%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| VANGUARD GROUP INC |
13F
Company
|
6.1%
|
$350,326,000
10,957,968 shares
|
— | 30 Sep 2021 |
| PRICE T ROWE ASSOCIATES INC /MD/ |
13F
Company
|
5%
|
$284,677,000
8,904,489 shares
|
— | 30 Sep 2021 |
| BlackRock Finance, Inc. |
13F
Company
|
4.9%
|
$281,407,000
8,802,223 shares
|
— | 30 Sep 2021 |
| FMR LLC |
13F
Company
|
4.8%
|
$271,521,000
8,492,988 shares
|
— | 30 Sep 2021 |
| DIMENSIONAL FUND ADVISORS LP |
13F
Company
|
3.3%
|
$190,161,000
5,947,894 shares
|
— | 30 Sep 2021 |
| PRINCIPAL FINANCIAL GROUP INC |
13F
Company
|
3.3%
|
$186,053,000
5,819,581 shares
|
— | 30 Sep 2021 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q4 2021
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
250
Shares
119,774,981
Rows available
250
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q4 2021 vs Q1 2026 Across Filers
Q1 2026 holders
1
Q4 2021 holders
250
Holder diff
249
| Investor | Q1 2026 Shares | Q4 2021 Shares | Share Diff | Share Chg % | Q1 2026 value | Q4 2021 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend