AMERICAN SECURITIES LLC

CIK 1475483 · View on SEC EDGAR ↗

Portfolio value
$3.9B
#947 of 9,443 by 13F value · top 10.0%
Positions
2
As of
March 31, 2026 Data as of Q1 2026

Portfolio value QoQ: +201.0% 13F does not disclose cash

Top 10 holdings weight
100.00%
Top 25 holdings weight
100.00%
Positions above 1%
2
Effective number of positions
1.7

Based on 13F long-equity holdings only (cash, bonds, shorts not disclosed)

Turnover Q1 2026: 0.0% Est. buys $2,755,960,337 · sells $0

Median holding: 3.5 quarters Tracked Q4 2024–Q1 2026 · 100.0% still held

New positions
1
Increased
0
Decreased
0
Closed
0
On this page

Performance vs S&P 500

Tracked Q4 2024–Q1 2026
+24.0%
S&P 500 total return (same window)
+11.5%
Excess return
+12.5%

Annualized: +18.8% · S&P 500: +9.2%

Approximates a buy-and-hold portfolio built from quarterly SEC 13F snapshots. Excludes cash, short positions, options/derivatives, and non-13(f) securities — reflects the disclosed long-equity book only, not total fund AUM. SEC filing lag is up to 45 days; this is not a real-time-copyable timing.

Priceable coverage: 100.0% · Options excluded: 0.0%

Sector breakdown

Industrials
29.9%
Other/Unmapped
70.1%

Full portfolio 2 positions

Type Streak 8Q trend
MWH SOLV Energy, Inc. - Class A common stock $2,755,960,337 70.12% 91,773,571 Up ×1
AMTM Amentum Holdings, Inc. Common Stock $1,174,297,457 29.88% 45,026,743 $-131,478,090

Biggest new bets

New positions opened this quarter, largest first.

Security Value Shares % of portfolio
MWH $2,755,960,337 91,773,571 70.12%

Top movers (QoQ)

Security Action Shares Δ Value Δ
AMTM Price move only +0 -$131.5M