American Shared Hospital Services
American Shared Hospital Services（AMS）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 · AMS · 截至 2025年9月30日
股东结构概览
21
机构持有人数
▲ 3 vs Q2
$3.47M
机构持仓总市值
▲ $1.42M vs Q2
6.63M
总流通股
freeFloat 57.38%
1.24M
13F 申报持股数
▲ 388,786 vs Q2
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
AMS 最大股东 · 机构持仓
Q3 2025 · SEC 13F
显示前 10 家
| 机构 | 持股数 | 占比 | 权重 | 市值 | 申报日 | 变动 |
|---|---|---|---|---|---|---|
services-medical laboratories | 410.7K | 6.24% | 6.24% | $1.15B | May 15, 2026 | NEW |
DIMENSIONAL FUND ADVISORS LP services-medical laboratories | 210.0K | 3.19% | 3.19% | $587.88M | Nov 12, 2025 | — held |
VANGUARD GROUP INC services-medical laboratories | 181.1K | 2.75% | 2.75% | $507.20M | Nov 7, 2025 | ▼ 100 |
CI PRIVATE WEALTH, LLC services-medical laboratories | 160.6K | 2.44% | 2.44% | $449.56M | Nov 14, 2025 | — held |
BRIDGEWAY CAPITAL MANAGEMENT, LLC services-medical laboratories | 96.7K | 1.47% | 1.47% | $270.74M | Nov 14, 2025 | — held |
RENAISSANCE TECHNOLOGIES LLC services-medical laboratories | 49.8K | 75.66% | 75.66% | $139.44M | Nov 13, 2025 | ▼ 16.9K |
GEODE CAPITAL MANAGEMENT, LLC services-medical laboratories | 32.7K | 49.63% | 49.63% | $91.50M | Nov 12, 2025 | ▼ 427 |
JAMES INVESTMENT RESEARCH INC services-medical laboratories | 29.7K | 45.16% | 45.16% | $83.23M | Oct 31, 2025 | — held |
NEWEDGE ADVISORS, LLC services-medical laboratories | 29.7K | 45.16% | 45.16% | $83.23M | Nov 17, 2025 | — held |
STATE STREET CORP services-medical laboratories | 12.1K | 18.38% | 18.38% | $33.88M | Nov 14, 2025 | — held |
数据来源：SEC 13F 申报文件。变动标识：isNew / isSoldOut / changeInSharesNumber。
机构仓位变动
Q3 2025 对比上季度
Q3 2025
1
增持
+454 股5
新建仓
首次建仓6
减持
−18.6K 股2
清仓
完全退出净股数变化（前50家）
18.2K
+454 / −18.6K
净新增持仓人
-2
新建 5 个 / 退出 2 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
AMS 内幕交易记录
数据来源：SEC Form 4
1
买入笔数
0
卖出笔数
0.00
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 |
|---|---|---|---|---|---|---|---|
Stachowiak Raymond C Executive Chairman | Mar 26, 2026 | Award | 100,000 | — | — | 774.7K | Form 4 ↗ |
Stachowiak Raymond C Executive Chairman | Jun 26, 2025 | Award | 110,000 | — | — | 664.7K | Form 4 ↗ |
Tagawa Craig Kenji President | Apr 30, 2025 | Award | 5,613 | — | — | 35.5K | Form 4 ↗ |
Frech Raymond Scott Chief Financial Officer | Dec 19, 2024 | Award | 50,000 | — | — | 50.0K | Form 4 ↗ |
Delanois Gary Chief Operating Officer | Oct 14, 2024 | Award | 120,000 | — | — | 120.0K | Form 4 ↗ |
Stachowiak Raymond C Executive Chairman | Mar 22, 2024 | Award | 120,000 | — | — | 554.7K | Form 4 ↗ |
HIATT ROBERT L Chief Financial Officer | Apr 17, 2023 | Award | 20,000 | $2.78 | $55.6K | 20.0K | Form 4 ↗ |
Gaccione Peter M Chief Executive Officer | Mar 28, 2023 | Award | 50,000 | $2.93 | $146.5K | 50.0K | Form 4 ↗ |
Stachowiak Raymond C Executive Chairman | Mar 28, 2023 | Award | 120,000 | — | — | 536.2K | Form 4 ↗ |
Tagawa Craig Kenji President, CFO | Mar 7, 2023 | Award | 10,827 | — | — | 29.9K | 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
American Shared Hospital Services（AMS）主要由机构投资者持有，机构持股比例约为 18.7%。公司内部人员持股约 42.62%，散户及公众持股约占剩余的 38.65%。
American Shared Hospital Services 最大机构股东为 ，截至 September 30, 2025 持有约 410,746 股，占总流通股的 6.24%。
目前共有 21 家机构持有 AMS 股票，合计持仓市值约 $3,473,784，数据来源为最新 SEC 13F 申报。
常见问题
AMS ownershipAmerican Shared Hospital Services（AMS）主要由机构投资者持有，机构持股约 18.7%。最大股东为 ，持股比例 6.24%。内部人员持股约 42.62%。数据来源 SEC Form 13F，截至 September 30, 2025。