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Dimensional Fund Advisors LP

SEC CIK
0000354204
Latest filing
Aug 11, 2026

SUM holding history

Summit Materials, Inc. in every 13F filed by Dimensional Fund Advisors LP, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

SUM overviewAll 13F holders of SUMFull Q2 2026 holdings

Shares (Q1 2025)
0
Sold out in Q1 2025
Value
$0
% of portfolio
0.0%
Quarters held
16
Since Q1 2021
Holdings of SUM by Dimensional Fund Advisors LP, by quarter
QuarterSharesValue% of portfolioShare changeActionAll holders
Q1 20250$00.0%−3,147,009−100.0%Sold outHolders
Q4 20243,147,009$159.2M<0.1%−1,035,244−24.8%ReducedHolders
Q3 20244,182,253$163.2M<0.1%−145,188−3.4%ReducedHolders
Q2 20244,327,441$158.4M<0.1%−540,509−11.1%ReducedHolders
Q1 20244,867,950$217.0M0.1%−590,864−10.8%ReducedHolders
Q4 20235,458,814$209.9M0.1%−77,813−1.4%ReducedHolders
Q3 20235,536,627$172.4M0.1%−442,634−7.4%ReducedHolders
Q2 20235,979,261$226.3M0.1%−148,066−2.4%ReducedHolders
Q1 20236,127,327$174.6M0.1%+128,368+2.1%AddedHolders
Q4 20225,998,959$170.3M0.1%+388,522+6.9%AddedHolders
Q3 20225,610,437$134.4M0.1%+101,559+1.8%AddedHolders
Q2 20225,508,878$128.3M<0.1%+181,644+3.4%AddedHolders
Q1 20225,327,234$165.5M0.1%−273,162−4.9%ReducedHolders
Q4 20215,600,396$224.8M0.1%−347,498−5.8%ReducedHolders
Q3 20215,947,894$190.2M0.1%+88,520+1.5%AddedHolders
Q2 20215,859,374$204.2M0.1%−76,915−1.3%ReducedHolders
Q1 20215,936,289$166.3M0.1%––Holders

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.