Security key
86614U100
SUMMIT MATERIALS INC -CL A - COMMON STOCK (SUM)
CUSIP: 86614U100
Q4 2023 13F Holders as of 31 Dec 2023
- Security type / class
- Equity / COMMON STOCK
- Total 13F shares
- 119,981,494
- Total 13F value
- $4,614,482,957
- Share change
- -655,517
- Put/Call ratio
- 25%
- SEC-reported price per share
- $38.46
- Number of holders
- 292
- Value change
- -$16,968,421
- Number of buys
- 139
- Number of sells
- 145
- 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 2023
Institutions
292
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 2023
13F
Lead comparable stake: 6.7%
Showing 1-6 of 15 holder rows.
Quick read
VANGUARD GROUP INC leads the comparable SEC ownership view at 6.7%.
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
6.7%
BlackRock Finance, Inc.
5.8%
DIMENSIONAL FUND ADVISORS LP
3.1%
MASSACHUSETTS FINANCIAL SERVICES ...
3.1%
MACQUARIE GROUP LTD
3.1%
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
|
6.7%
|
$371,353,469
11,925,288 shares
|
— | 30 Sep 2023 |
| BlackRock Finance, Inc. |
13F
Company
|
5.8%
|
$322,367,321
10,352,194 shares
|
— | 30 Sep 2023 |
| DIMENSIONAL FUND ADVISORS LP |
13F
Company
|
3.1%
|
$172,413,208
5,536,627 shares
|
— | 30 Sep 2023 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ |
13F
Company
|
3.1%
|
$171,673,544
5,512,959 shares
|
— | 30 Sep 2023 |
| MACQUARIE GROUP LTD |
13F
Company
|
3.1%
|
$171,571,000
5,509,165 shares
|
— | 30 Sep 2023 |
| PRICE T ROWE ASSOCIATES INC /MD/ |
13F
Company
|
3.1%
|
$170,478,000
5,474,534 shares
|
— | 30 Sep 2023 |
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 2023
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
292
Shares
119,981,494
Rows available
292
| 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 2023 vs Q1 2026 Across Filers
Q1 2026 holders
1
Q4 2023 holders
292
Holder diff
291
| Investor | Q1 2026 Shares | Q4 2023 Shares | Share Diff | Share Chg % | Q1 2026 value | Q4 2023 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend