AMTM
Amentum Holdings, Inc.Pre-market18.92−0.37 −1.92%USD
NYSE · as of Oct 12, 16:00 ET · 20m delayPre-market 19.20 +1.48%
Open
19.40
Prev close
19.29
Day range
18.9219.47
52-week range
17.7238.11
Volume
1.61M0.79×
Mkt cap
4.63B
P/E ttm
22.80
Fwd P/E
7.17
EPS ttm
0.8300
Div yield
0.00%
Earnings
Aug 10, 2026
From 52w high
−50.35%
AMTM shareholders
AMTM Ownership
13F / N-PORT filings via Yahoo
Institutions
109.3%
110.6% of the float
Insiders
1.2%
officers and directors
Institutional holders
612
filing positions
Top 10 institutions
57.4%
8 adding · 0 trimming
Top Institutions
| Holder | % held | Shares | Value | Change | As of |
|---|---|---|---|---|---|
| American Securities LLC | 18.42% | 45.03M | $851.91M | 0.0% | Jun 30, 2026 |
| Invesco Ltd. | 10.21% | 24.95M | $472.13M | +16.2% | Jun 30, 2026 |
| Blackrock Inc. | 7.32% | 17.91M | $338.80M | +0.4% | Jun 30, 2026 |
| Primecap Management Company | 5.02% | 12.29M | $232.44M | +1.7% | Jun 30, 2026 |
| Legacy Advisors, LLC | 3.71% | 9.07M | $171.52M | 0.0% | Jun 30, 2026 |
| Vanguard Portfolio Management LLC | 3.25% | 7.95M | $150.38M | +1.2% | Jun 30, 2026 |
| Vanguard Capital Management LLC | 2.75% | 6.71M | $126.99M | +0.9% | Jun 30, 2026 |
| FMR, LLC | 2.32% | 5.68M | $107.45M | +1.8% | Jun 30, 2026 |
| Dimensional Fund Advisors LP | 2.26% | 5.54M | $104.77M | +46.2% | Jun 30, 2026 |
| State Street Corporation | 2.11% | 5.15M | $97.47M | +1.4% | Jun 30, 2026 |
Top Funds
| Holder | % held | Shares | Value | Change | As of |
|---|---|---|---|---|---|
| iShares Trust-iShares Core S&P Small-Cap ETF | 3.83% | 9.37M | $177.36M | 0.0% | Aug 31, 2026 |
| VANGUARD FENWAY FUNDS-Vanguard PRIMECAP Core Fund | 2.26% | 5.52M | $104.38M | +4.7% | Jun 30, 2026 |
| VANGUARD INDEX FUNDS-Vanguard Total Stock Market Index Fund | 1.90% | 4.65M | $88.04M | +0.1% | Jun 30, 2026 |
| AIM Sector Funds (Invesco Sector Funds)-Invesco Small Cap Value Fund | 1.73% | 4.23M | $79.97M | 0.0% | Jul 31, 2026 |
| VANGUARD INDEX FUNDS-Vanguard Small-Cap Index Fund | 1.38% | 3.36M | $63.64M | −0.3% | Jun 30, 2026 |
| AIM Sector Fd.s -INVESCO VALUE OPPORTUNITIES Fd. | 1.20% | 2.95M | $55.72M | 0.0% | Jul 31, 2026 |
| Fidelity Capital Trust-Fidelity Value Fund | 1.15% | 2.82M | $53.40M | +6.0% | Aug 31, 2026 |
| VANGUARD HORIZON FUNDS-Vanguard Capital Opportunity Fund | 1.03% | 2.51M | $47.42M | −3.0% | Jun 30, 2026 |
| VANGUARD INDEX FUNDS-Vanguard Small-Cap Value Index Fund | 0.87% | 2.13M | $40.29M | −0.9% | Jun 30, 2026 |
| GLOBAL X FUNDS-Global X Defense Tech ETF | 0.86% | 2.11M | $39.91M | +0.1% | Aug 31, 2026 |
Institutions report quarterly, up to 45 days after the quarter ends, so these positions can be months old. Change compares the share count with the holder's previous filing. Insider transactions are on the overview page (INSD).