Amentum Holdings, Inc.
Amentum Holdings, Inc.（AMTM）股东结构
基于 13F 申报与流通股数据，展示机构、内部人与公众持股结构；下方为前十大机构、机构动向与内部人交易。
SEC 13F · FMP · AMTM · 截至 2025年3月31日
股东结构概览
444
机构持有人数
▼ 29 vs Q4
$3.49B
机构持仓总市值
▼ $253,453 vs Q4
244.09M
总流通股
freeFloat 80.64%
191.79M
13F 申报持股数
▲ 26.37M vs Q4
机构持仓% = 13F 持股数 ÷ 总流通股。内部人% = 100 − 自由流通率。散户% = 自由流通率 − 机构%。数据来源：FMP /symbol-positions-summary + /shares-float + SEC EDGAR。
前10大机构持仓
AMTM 最大股东 · 机构持仓
Q1 2025 · SEC 13F
显示前 10 家
| 机构 | 持股数 | 占比 | 权重 | 市值 | 申报日 | 变动 |
|---|---|---|---|---|---|---|
AMERICAN SECURITIES LLC services-business services, nec | 43.89M | 18.06% | 18.06% | $798.87B | May 12, 2025 | — held |
BLACKROCK, INC. services-business services, nec | 18.25M | 7.51% | 7.51% | $332.13B | May 2, 2025 | ▲ 1.47M |
INVESCO LTD. services-business services, nec | 17.19M | 7.07% | 7.07% | $312.88B | May 12, 2025 | ▲ 3.33M |
VANGUARD GROUP INC services-business services, nec | 16.34M | 6.73% | 6.73% | $297.43B | May 9, 2025 | ▼ 199.9K |
PRIMECAP MANAGEMENT CO/CA/ services-business services, nec | 10.06M | 4.14% | 4.14% | $183.12B | May 9, 2025 | ▲ 3.65M |
STATE STREET CORP services-business services, nec | 6.58M | 2.71% | 2.71% | $119.69B | May 15, 2025 | ▲ 122.1K |
FMR LLC services-business services, nec | 4.41M | 1.81% | 1.81% | $80.24B | May 12, 2025 | ▲ 2.01M |
FRONTIER CAPITAL MANAGEMENT CO LLC services-business services, nec | 3.58M | 1.47% | 1.47% | $65.13B | May 15, 2025 | NEW |
THOMPSON SIEGEL & WALMSLEY LLC services-business services, nec | 3.33M | 1.37% | 1.37% | $60.54B | May 9, 2025 | ▲ 1.38M |
KOVITZ INVESTMENT GROUP PARTNERS, LLC services-business services, nec | 3.08M | 1.27% | 1.27% | $55.97B | May 19, 2025 | ▼ 77.0K |
数据来源：SEC 13F 申报文件。变动标识：isNew / isSoldOut / changeInSharesNumber。
机构仓位变动
Q1 2025 对比上季度
Q1 2025
36
增持
+30.16M 股4
新建仓
首次建仓9
减持
−3.77M 股0
清仓
完全退出净股数变化（前50家）
+26.39M
+30.16M / −3.77M
净新增持仓人
+31
新建 4 个 / 退出 0 个
基于前50家最大机构持仓统计，全市场实际数量可能不同。
内幕交易买卖情绪
AMTM 内幕交易记录
数据来源：SEC Form 4
5
买入笔数
10
卖出笔数
0.50
买卖比
$0M
卖出总金额
最近内幕交易记录
最近10条 · 仅普通股
| 姓名 · 职位 | 日期 | 类型 | 股数 | 价格 | 金额 | 交易后持股 | 申报 |
|---|---|---|---|---|---|---|---|
Heller John E. Chief Executive Officer | May 6, 2026 | Tax Withhold | 8,184 | $24.89 | $203.7K | 376.0K | Form 4 ↗ |
Mullen Sean Thomas Chief Growth Officer | May 6, 2026 | Tax Withhold | 2,762 | $24.89 | $68.7K | 32.4K | Form 4 ↗ |
Johnson Travis Barton Chief Financial Officer | May 6, 2026 | Tax Withhold | 4,097 | $24.89 | $102.0K | 118.2K | Form 4 ↗ |
Bruning Jill L Chief Technology Officer | May 6, 2026 | Tax Withhold | 2,731 | $24.89 | $68.0K | 197.5K | Form 4 ↗ |
Arnette Stephen A Chief Operating Officer | May 6, 2026 | Tax Withhold | 3,314 | $24.89 | $82.5K | 106.7K | Form 4 ↗ |
Bruning Jill L Chief Technology Officer | Mar 4, 2026 | Gift | 30,000 | — | — | 191.0K | Form 4 ↗ |
Arnette Stephen A Chief Operating Officer | Mar 2, 2026 | Tax Withhold | 750 | $30.70 | $23.0K | 96.4K | Form 4 ↗ |
数据来源：SEC Form 4。买卖方向：acquisitionOrDisposition A=买入，D=卖出。已排除 RSU 归属（M-Exempt）。
关于机构与内部人持股结构
Amentum Holdings, Inc.（AMTM）主要由机构投资者持有，机构持股比例约为 78.6%。公司内部人员持股约 19.36%，散户及公众持股约占剩余的 2.06%。
Amentum Holdings, Inc. 最大机构股东为 AMERICAN SECURITIES LLC，截至 March 31, 2025 持有约 43.89 million 股，占总流通股的 18.06%。
目前共有 444 家机构持有 AMTM 股票，合计持仓市值约 $3.49 billion，数据来源为最新 SEC 13F 申报。
常见问题
AMTM ownershipAmentum Holdings, Inc.（AMTM）主要由机构投资者持有，机构持股约 78.6%。最大股东为 AMERICAN SECURITIES LLC，持股比例 18.06%。内部人员持股约 19.36%。数据来源 SEC Form 13F，截至 March 31, 2025。