Amentum Holdings, Inc. - AMTM
Sector:
Industrials
· Industry:
Specialty Business Services
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Company profile
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Quarter snapshot
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Q3 2026
· Q2 2026
Value (USD)
Total reported value ($000)
$4.413B
QoQ value delta ($000)
-$2.416M
(-0.05%)
Implied price effect (QoQ)
-0.05%
Shares
Total shares
222,337,354
QoQ shares delta
-6,537
(-0.0%)
Total shares held by funds (by quarter)
Shares (left)
Fund holders (right)
Market chart (AMTM)
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Top holders (Q3 2026)
Top 25 only
Full list
Partial Q3 2026 data: 8 holders have filed so far. Prior holders are carried forward until their next 13F confirms a change.
| Manager | Value ($000) | Shares | % of 13F |
|---|---|---|---|
| AMERICAN SECURITIES LLC | 930,702 | 45,026,743 | 24.79% |
| Invesco Ltd. | 515,804 | 24,954,251 | 0.04% |
| BlackRock, Inc. | 370,137 | 17,906,984 | 0.01% |
| PRIMECAP MANAGEMENT CO/CA/ | 253,941 | 12,285,504 | 0.15% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 164,293 | 7,948,385 | 0.01% |
| VANGUARD CAPITAL MANAGEMENT LLC | 138,736 | 6,711,987 | 0.0% |
| FMR LLC | 117,388 | 5,679,175 | 0.01% |
| DIMENSIONAL FUND ADVISORS LP | 114,458 | 5,537,696 | 0.02% |
| STATE STREET CORP | 106,487 | 5,151,772 | 0.0% |
| FRONTIER CAPITAL MANAGEMENT CO LLC | 85,655 | 4,143,971 | 0.8% |
| Troluce Capital Advisors LLC | 73,696 | 3,565,399 | 7.59% |
| GEODE CAPITAL MANAGEMENT, LLC | 56,171 | 2,716,560 | 0.0% |
| GOLDMAN SACHS GROUP INC | 56,054 | 2,711,866 | 0.0% |
| MORGAN STANLEY | 55,030 | 2,662,329 | 0.0% |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 47,925 | 2,318,581 | 0.06% |
| THOMPSON SIEGEL & WALMSLEY LLC | 47,168 | 2,281,945 | 0.85% |
| SEGRA CAPITAL MANAGEMENT, LLC | 46,257 | 2,237,890 | 9.33% |
| MILLENNIUM MANAGEMENT LLC | 43,981 | 2,127,779 | 0.02% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 43,822 | 2,120,102 | 0.01% |
| THRIVENT FINANCIAL FOR LUTHERANS | 43,527 | 2,105,802 | 0.07% |
| BANK OF AMERICA CORP /DE/ | 42,226 | 2,042,897 | 0.0% |
| Verition Fund Management LLC | 41,739 | 2,019,334 | 0.21% |
| VAN ECK ASSOCIATES CORP | 41,110 | 1,988,898 | 0.03% |
| VOYA INVESTMENT MANAGEMENT LLC | 40,806 | 1,974,191 | 0.04% |
| UBS Group AG | 31,938 | 1,545,183 | 0.0% |