Magnite, Inc.
Magnite, Inc.（MGNI）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 · MGNI · 截至 2025年9月30日
股东结构概览
352
机构持有人数
▲ 38 vs Q2
$3.00B
机构持仓总市值
▼ $539.03M vs Q2
143.22M
总流通股
freeFloat 98.54%
138.02M
13F 申报持股数
▼ 8.94M 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
MGNI 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 |
|---|---|---|---|---|---|---|
FMR LLC services-computer programming, data processing, etc. | 17.14M | 12.10% | 12.10% | $373.33B | Nov 13, 2025 | ▼ 44.9K |
VANGUARD GROUP INC services-computer programming, data processing, etc. | 14.65M | 10.35% | 10.35% | $319.17B | Nov 7, 2025 | ▲ 1.09M |
BLACKROCK, INC. services-computer programming, data processing, etc. | 11.41M | 8.06% | 8.06% | $248.58B | Nov 12, 2025 | ▲ 715.1K |
CAPITAL RESEARCH GLOBAL INVESTORS services-computer programming, data processing, etc. | 6.98M | 4.93% | 4.93% | $152.09B | Nov 13, 2025 | ▼ 5.94M |
WELLINGTON MANAGEMENT GROUP LLP services-computer programming, data processing, etc. | 5.14M | 3.63% | 3.63% | $112.05B | Nov 14, 2025 | ▼ 303.3K |
AMERICAN CENTURY COMPANIES INC services-computer programming, data processing, etc. | 4.59M | 3.24% | 3.24% | $100.06B | Nov 12, 2025 | ▼ 235.1K |
BOSTON PARTNERS services-computer programming, data processing, etc. | 4.45M | 3.14% | 3.14% | $95.21B | Nov 13, 2025 | ▼ 1.13M |
GRANAHAN INVESTMENT MANAGEMENT, LLC services-computer programming, data processing, etc. | 3.87M | 2.73% | 2.73% | $84.36B | Nov 14, 2025 | ▲ 230.4K |
DIMENSIONAL FUND ADVISORS LP services-computer programming, data processing, etc. | 3.57M | 2.52% | 2.52% | $77.70B | Nov 12, 2025 | ▼ 1.33M |
GEODE CAPITAL MANAGEMENT, LLC services-computer programming, data processing, etc. | 3.40M | 2.40% | 2.40% | $74.04B | Nov 12, 2025 | ▲ 182.3K |
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
21
增持
+11.19M 股3
新建仓
首次建仓24
减持
−15.28M 股0
清仓
完全退出净股数变化（前50家）
4.08M
+11.19M / −15.28M
净新增持仓人
+0
新建 3 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
MGNI 内幕交易记录
数据来源：SEC Form 4
近期内部人员以卖出为主。 卖出可能源于预定的 10b5-1 计划，不代表负面展望。
0
买入笔数
8
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 |
|---|---|---|---|---|---|---|---|
Spillane Robert F director | May 19, 2026 | Sale | 10,000 | $13.33 | $133.3K | 43.9K | Form 4 ↗ |
BARRETT MICHAEL G. CEO | May 15, 2026 | Tax Withhold | 10,404 | $12.82 | $133.4K | 403.1K | Form 4 ↗ |
Buckley Sean Patrick President, Revenue | May 15, 2026 | Tax Withhold | 12,019 | $12.82 | $154.1K | 392.7K | Form 4 ↗ |
Evans Katie Seitz President, Operations | May 15, 2026 | Tax Withhold | 11,204 | $12.82 | $143.6K | 496.8K | Form 4 ↗ |
Day David CHIEF FINANCIAL OFFICER | May 15, 2026 | Tax Withhold | 14,170 | $12.82 | $181.7K | 493.3K | Form 4 ↗ |
Saltz Aaron CHIEF LEGAL OFFICER | May 15, 2026 | Tax Withhold | 5,627 | $12.82 | $72.1K | 270.0K | Form 4 ↗ |
Gephart Brian CHIEF ACCOUNTING OFFICER | May 15, 2026 | Tax Withhold | 3,789 | $12.82 | $48.6K | 118.6K | Form 4 ↗ |
Buonasera David CHIEF TECHNOLOGY OFFICER | May 15, 2026 | Tax Withhold | 8,335 | $12.82 | $106.9K | 294.2K | Form 4 ↗ |
Soroca Adam Lee CHIEF PRODUCT OFFICER | Feb 15, 2026 | Tax Withhold | 18,933 | $11.70 | $221.5K | 410.0K | Form 4 ↗ |
Soroca Adam Lee CHIEF PRODUCT OFFICER | Feb 18, 2026 | Sale | 21,529 | $12.00 | $258.3K | 388.4K | 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
Magnite, Inc.（MGNI）主要由机构投资者持有，机构持股比例约为 96.4%。公司内部人员持股约 1.46%，散户及公众持股约占剩余的 2.17%。
Magnite, Inc. 最大机构股东为 FMR LLC，截至 September 30, 2025 持有约 17.14 million 股，占总流通股的 12.10%。
目前共有 352 家机构持有 MGNI 股票，合计持仓市值约 $3.00 billion，数据来源为最新 SEC 13F 申报。
常见问题
MGNI ownershipMagnite, Inc.（MGNI）主要由机构投资者持有，机构持股约 96.4%。最大股东为 FMR LLC，持股比例 12.10%。内部人员持股约 1.46%。数据来源 SEC Form 13F，截至 September 30, 2025。