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Disclosery

AMERICAN SECURITIES LLC

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13F filer, CIK 1475483, NEW YORK, NY

AMERICAN SECURITIES LLC reported $3,754,142,432 across 2 holdings for the quarter ended 2026-06-30, in a 13F-HR filed 2026-08-26.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001140361-26-034405

Period
2026-06-30
Reported value
$3.75B
Holdings
2
Top 10 weight
100%
New
0
Sold out
0

Largest buys vs the previous quarter

None.

Largest sells vs the previous quarter

SecurityShares changeApprox. value
MWHreduced-8,853,170-$301M

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Holdings, Q2 2026

Share positions as resolved from 13F-HR 0001140361-26-034405, largest first. % of portfolio is the value over $3,754,142,432, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
MWHSOLV ENERGY INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 91,773,571 shares; 2026Q2: 82,920,401 shares 82,920,401$2.82B75.21%-8,853,170Timeline
AMTMAMENTUM HOLDINGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: 43,893,904 shares; 2025Q1: 43,893,904 shares; 2025Q2: 45,026,743 shares; 2025Q3: 45,026,743 shares; 2025Q4: 45,026,743 shares; 2026Q1: 45,026,743 shares; 2026Q2: 45,026,743 shares 45,026,743$931M24.79%0Timeline

How Q2 2026 was built

Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).

FilingRoleAmendmentFiledAcceptedIngested
13F-HR 0001140361-26-034405 base2026-08-26acceptance time not in the bulk data set

Filings

Every filing of this filer: 13F reports and notices, the 13D and 13G it filed or is a reporting person of, and Forms 3, 4 and 5 it reported as an owner.

FilingSubjectFiledAcceptedIngested
13F-HR 0001140361-26-034405 Quarter ended 2026-06-302026-08-26acceptance time not in the bulk data set
13F-HR 0001140361-26-021229 Quarter ended 2026-03-312026-05-14acceptance time not in the bulk data set
13F-HR 0001140361-26-004947 Quarter ended 2025-12-312026-02-12acceptance time not in the bulk data set
13F-HR 0001140361-25-041164 Quarter ended 2025-09-302025-11-07acceptance time not in the bulk data set
13F-HR 0001140361-25-027743 Quarter ended 2025-06-302025-07-29acceptance time not in the bulk data set
13F-HR 0001140361-25-018266 Quarter ended 2025-03-312025-05-12acceptance time not in the bulk data set
13F-HR/A 0001140361-25-004396 Quarter ended 2024-12-312025-02-14acceptance time not in the bulk data set
13F-HR 0001140361-25-003803 Quarter ended 2024-12-312025-02-11acceptance time not in the bulk data set
13F-HR 0001140361-24-045947 Quarter ended 2024-09-302024-11-12acceptance time not in the bulk data set
13F-HR 0001140361-24-036696 Quarter ended 2024-06-302024-08-12acceptance time not in the bulk data set
13F-HR 0001140361-24-025929 Quarter ended 2024-03-312024-05-14acceptance time not in the bulk data set
13F-HR 0001140361-24-007446 Quarter ended 2023-12-312024-02-13acceptance time not in the bulk data set
13F-HR 0001140361-23-053207 Quarter ended 2023-09-302023-11-14acceptance time not in the bulk data set
13F-HR 0001140361-23-037980 Quarter ended 2023-06-302023-08-04acceptance time not in the bulk data set
13F-HR 0001140361-23-024520 Quarter ended 2023-03-312023-05-15acceptance time not in the bulk data set
13F-HR 0001140361-23-006203 Quarter ended 2022-12-312023-02-13acceptance time not in the bulk data set
13F-HR 0001567619-22-019654 Quarter ended 2022-09-302022-11-14acceptance time not in the bulk data set
13F-HR 0001567619-22-010537 Quarter ended 2022-03-312022-05-13acceptance time not in the bulk data set
13F-HR 0001567619-22-003801 Quarter ended 2021-12-312022-02-14acceptance time not in the bulk data set
13F-HR 0001567619-21-020279 Quarter ended 2021-09-302021-11-15acceptance time not in the bulk data set
13F-HR/A 0001567619-21-015666 Quarter ended 2021-06-302021-08-16acceptance time not in the bulk data set
13F-HR 0001567619-21-014630 Quarter ended 2021-06-302021-08-06acceptance time not in the bulk data set
13F-HR 0001567619-21-009652 Quarter ended 2021-03-312021-05-12acceptance time not in the bulk data set
13F-HR 0001567619-21-002182 Quarter ended 2020-12-312021-02-04acceptance time not in the bulk data set
13F-HR 0001567619-20-019258 Quarter ended 2020-09-302020-11-12acceptance time not in the bulk data set
13F-HR 0001567619-20-014443 Quarter ended 2020-06-302020-08-06acceptance time not in the bulk data set
13F-HR 0001567619-20-008847 Quarter ended 2020-03-312020-05-04acceptance time not in the bulk data set
13F-HR 0001567619-20-001810 Quarter ended 2019-12-312020-01-31acceptance time not in the bulk data set
13F-HR 0001567619-19-021091 Quarter ended 2019-09-302019-11-13acceptance time not in the bulk data set
13F-HR 0001567619-19-016776 Quarter ended 2019-06-302019-08-14acceptance time not in the bulk data set
13F-HR 0001567619-19-009211 Quarter ended 2019-03-312019-04-26acceptance time not in the bulk data set
13F-HR 0001567619-19-003646 Quarter ended 2018-12-312019-02-13acceptance time not in the bulk data set
13F-HR 0001567619-18-005670 Quarter ended 2018-09-302018-11-13acceptance time not in the bulk data set
13F-HR 0001140361-18-035487 Quarter ended 2018-06-302018-08-06acceptance time not in the bulk data set
13F-HR 0001140361-18-022904 Quarter ended 2018-03-312018-05-11acceptance time not in the bulk data set
13F-HR 0001140361-18-004683 Quarter ended 2017-12-312018-02-02acceptance time not in the bulk data set
13F-HR 0001140361-17-041900 Quarter ended 2017-09-302017-11-13acceptance time not in the bulk data set
13F-HR 0001140361-17-031718 Quarter ended 2017-06-302017-08-14acceptance time not in the bulk data set
13F-HR 0001140361-17-020812 Quarter ended 2017-03-312017-05-15acceptance time not in the bulk data set
13F-HR 0001140361-17-007129 Quarter ended 2016-12-312017-02-14acceptance time not in the bulk data set
13F-HR 0001140361-16-053410 Quarter ended 2015-12-312016-02-16acceptance time not in the bulk data set
13F-HR 0001140361-15-006402 Quarter ended 2014-12-312015-02-13acceptance time not in the bulk data set
13F-HR 0001140361-13-041568 Quarter ended 2013-09-302013-11-12acceptance time not in the bulk data set
13F-HR 0001140361-13-032666 Quarter ended 2013-06-302013-08-14acceptance time not in the bulk data set