开盘$179.30
昨收$172.33
当日区间$172.63 – $180.56
成交量1.27M
市值$10.43B
市盈率（TTM）34.9
股息率–
股权结构与仓位
谁在持有、谁在做空，以及大资金的流向
机构持股比例91.0%-0.87 个百分点，较上季度
持仓机构数1,109-25 ，较上季度
内部人近期交易19次买入 / 31次卖出净卖出
空头持仓比例4.80% 占流通股回补天数 2.5 · 截至 15 Oct 2026
卖空成交量占比17.5%近5日成交量平均占比
卖空成交量占当日成交量比例
大单净流入，近20个交易日
大单买入减卖出的净额（美元）。该窗口期内：−$8.74M（9个净流入日，11个净流出日）。
按单量净流入，近20个交易日
超大单/大单近似机构级别交易；中单/小单近似散户级别交易。各档买入减卖出净额，按窗口期累计。
已披露的前五大股东合计持有24.5%的流通股。
最大股东
按投资者类型
过去6次双周报告中（31 Jul 2026至15 Oct 2026），空头持仓占流通股比例已从3.47%升至4.80%。
近期机构持仓变动
| 股东 | 类型 | 期间 | 持股变动 | 新持股比例 |
|---|---|---|---|---|
| Columbia Management Investment Advisers, LLC | Mutual Fund | 2026/Q3 | +549,719 | 1.2% |
| Zurich Insurance Group AG | Public Company | 2026/Q3 | +408,460 | 0.7% |
| Jane Street Group, LLC | Private Company | 2026/Q3 | +322,012 | 1.0% |
| Norges Bank Investment Management | Sovereign Wealth Fund | 2026/Q3 | +245,406 | 1.3% |
| Wealth High Governance Asset Management Ltda | Mutual Fund | 2026/Q3 | +217,195 | 0.4% |
| BlackRock | Mutual Fund | 2026/Q3 | +198,570 | 6.8% |
| PGIM, Inc. | Mutual Fund | 2026/Q3 | +192,121 | 0.4% |
| Neuberger Berman Investment Advisers LLC | Mutual Fund | 2026/Q3 | +152,844 | 0.3% |
| Qube Research & Technologies Ltd | Mutual Fund | 2026/Q3 | +136,391 | 0.3% |
| Vaughan Nelson Investment Management, L.P. | Mutual Fund | 2026/Q3 | +131,050 | 0.2% |
| Vanguard Portfolio Management, LLC | Mutual Fund | 2026/Q3 | +110,206 | 4.1% |
| Granahan Investment Management, LLC | Mutual Fund | 2026/Q3 | +109,659 | 0.2% |
| Driehaus Capital Management LLC | Mutual Fund | 2026/Q3 | +105,345 | 0.2% |
| Goodlander Investment Management, LLC | Mutual Fund | 2026/Q3 | +95,000 | 0.2% |
| BW Gestao de Investimentos Ltda. | Family Office/Trust | 2026/Q3 | +82,814 | 0.1% |
按报告期列出的机构买卖动态，变动幅度从大到小排列。
内部人交易
| 日期 | 内部人 | 职位 | 交易类型 | 股数 | 价格 | 交易后持股 |
|---|---|---|---|---|---|---|
| 5 Oct 2026 | Norman Taffe | Executive VP & President of Generac Home | Intent to Sell (Form 144) | -150 | $220.00 | – |
| 5 Oct 2026 | Norman Taffe | Executive VP & President of Generac Home | Derivative Exercise and Sale | -250 | $220.00 | 10,976 |
| 4 Oct 2026 | Norman Taffe | Executive VP & President of Generac Home | Automatic Disposition | -300 | $215.46 | 10,976 |
| 4 Oct 2026 | Norman Taffe | President of Energy Technology | Intent to Sell (Form 144) | -400 | $215.46 | – |
| 1 Oct 2026 | Kyle Raabe | Executive VP & President of Home Power Generation | Automatic Disposition | -390 | $212.57 | 9,966 |
| 1 Oct 2026 | Kyle Raabe | President of Consumer Power | Intent to Sell (Form 144) | -603 | $212.57 | – |
| 1 Oct 2026 | Kyle Raabe | Executive VP & President of Home Power Generation | Derivative Exercise and Sale | -213 | $212.57 | 9,966 |
| 30 Sep 2026 | Aaron Jagdfeld | Chairperson & CEO | Automatic Disposition | -5,000 | $206.00 | 544,528 |
| 16 Sep 2026 | Norman Taffe | Executive VP & President of Generac Home | Derivative Exercise and Sale | -150 | $229.50 | 11,276 |
| 16 Sep 2026 | Kyle Raabe | Executive VP & President of Home Power Generation | Automatic Disposition | -390 | $229.50 | 10,356 |
| 16 Sep 2026 | Kyle Raabe | Executive VP & President of Home Power Generation | Derivative Exercise and Sale | -213 | $229.50 | 10,356 |
| 7 Sep 2026 | Norman Taffe | Executive VP & President of Generac Home | Automatic Disposition | -300 | $188.27 | 11,276 |
| 7 Sep 2026 | Norman Taffe | Executive VP & President of Generac Home | Derivative Exercise and Sale | -100 | $190.00 | 11,276 |
| 31 Aug 2026 | Aaron Jagdfeld | Chairperson & CEO | Automatic Disposition | -5,000 | $182.21 | 549,528 |
| 31 Aug 2026 | Norman Taffe | Executive VP & President of Generac Home | Sale to Issuer | -3,932 | $181.22 | 11,576 |
| 6 Aug 2026 | Kyle Raabe | Executive VP & President of Home Power Generation | Automatic Disposition | -373 | $213.35 | 10,746 |
| 6 Aug 2026 | Kyle Raabe | Executive VP & President of Home Power Generation | Derivative Exercise and Sale | -213 | $213.35 | 10,746 |
| 4 Aug 2026 | Norman Taffe | Executive VP & President of Generac Home | Automatic Disposition | -300 | $218.39 | 15,508 |
| 4 Aug 2026 | Norman Taffe | Executive VP & President of Generac Home | Derivative Exercise and Sale | -250 | $220.00 | 15,508 |
| 2 Aug 2026 | Aaron Jagdfeld | Chairperson & CEO | Automatic Disposition | -5,000 | $194.89 | 554,528 |
数据来自Form 4/Form 144申报文件。负数为减持（出售、赠予或代扣税款股份），正数为增持。
空头持仓（按报告期）
| 报告日期 | 空头股数 | 占流通股比例 | 回补天数 |
|---|---|---|---|
| 15 Oct 2026 | 2,836,478 | 4.8% | 2.5 |
| 30 Sep 2026 | 2,576,973 | 4.4% | 1.3 |
| 15 Sep 2026 | 2,468,098 | 4.2% | 3.2 |
| 31 Aug 2026 | 2,659,771 | 4.5% | 2.5 |
| 14 Aug 2026 | 2,283,795 | 3.9% | 2.1 |
| 31 Jul 2026 | 2,049,020 | 3.5% | 1.6 |
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