13F 申報指南13F 觀念全攻略
什麼是 SEC Form 13F 申報？美股機構大戶持股全攻略
完整解讀 Form 13F 申報規範、1 億美元門檻與 45 天延遲申報機制，學會如何追蹤頂級對沖基金與機構法人持倉動向。
AlphaSMO 權威研究指南閱讀專題
CIK: 0001222765
申報總市值
US$10.8億
US$10.8億
98 檔
20.9%
根據最新整理的 13F 季度數據集，Water Island Capital LLC 於 Q1 2026 結束時的管理資產規模為 US$10.8億。該機構在本季度申報了 98 檔美股持倉，呈現出該時期的主要投資地圖。
Water Island Capital LLC 在 Q1 2026 進行了結構性的板塊輪動與部位換股。在開立 59 個全新部位及加碼 23 檔持股的同時，亦同步清倉 52 檔並減碼 10 檔標的。
檢視投資組合結構，前 5 大主力部位（包含 EA, JHG, WBD）占據了總市值的 20.9%，展現出該機構在 Q1 2026 的重點資金聚焦與風險分佈特徵。
| # | 代號 | 標的名稱 | 資產子類別 | 佔比 | 佔比變動 | 持倉量變化 | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | EA | Electronic Arts Inc | 股票-通訊服務 | 5.69% | -0.87% | +38.18% | |
| 2 | JHG | Janus Henderson Group plc | 股票-金融 | 5.29% | -0.98% | +42.44% | |
| 3 | WBD | Warner Bros Discovery Inc | 股票-通訊服務 | 4.96% | -0.64% | +41.89% | |
| 4 | HO1 | Hologic Inc | 股票-其他 | 4.73% | -4.73% | EXIT | |
| 5 | TXNM | Txnm Energy Inc | 股票-公用事業 | 4.40% | -0.50% | +17.08% | |
| 6 | PEN | Penumbra Inc | 股票-醫療保健 | 4.40% | +0.02% | — | |
| 7 | GTLS | Chart Industries Inc | 股票-工業 | 4.38% | +0.24% | +0.86% | |
| 8 | NSC | Norfolk Southern CORP | 股票-工業 | 4.30% | -0.02% | +3.88% | |
| 9 | MASI* | Masimo CORP | 股票-其他 | 3.86% | -3.86% | EXIT | |
| 10 | EA | Electronic Arts Inc. | 股票-通訊服務 | 3.41% | -3.41% | EXIT | |
| 11 | WBS | Webster Financial CORP | 股票-金融 | 3.22% | -0.11% | — | |
| 12 | WBD | Warner Bros. Discovery, Inc. | 股票-通訊服務 | 3.22% | +0.56% | +1005.90% | |
| 13 | T86 | Tri Pointe Homes Inc | 股票-其他 | 2.80% | -2.80% | EXIT | |
| 14 | NSA | National Storage Affiliates | 股票-房地產 | 2.43% | +0.58% | — | |
| 15 | GLDD | Great Lakes Dredge & Dock Co | 股票-其他 | 2.40% | -2.40% | EXIT | |
| 16 | ACLXGBX | Arcellx Inc | 股票-其他 | 2.35% | -2.35% | EXIT | |
| 17 | DAWNGBX | Day One Biopharmaceuticals I | 股票-其他 | 2.26% | -2.26% | EXIT | |
| 18 | DBRG | Digitalbridge Group Inc | 股票-金融 | 2.24% | -0.22% | +39.83% | |
| 19 | ✓ | Day One Biopharmaceuticals I | 股票-其他 | 2.01% | -2.01% | EXIT | |
| 20 | STEL | Stellar Bancorp Inc | 股票-其他 | 1.76% | -0.36% | — | |
| 21 | EHABUSD | Enhabit Inc | 股票-其他 | 1.55% | -1.55% | EXIT | |
| 22 | SLAB | Silicon Laboratories Inc | 股票-科技 | 1.36% | +1.65% | — | |
| 23 | KVUE | Kenvue Inc | 股票-非循環性消費 | 1.35% | -0.64% | +1.51% | |
| 24 | ✓ | Kenvue Inc | 股票-其他 | 1.35% | -1.35% | EXIT | |
| 25 | VRSK | Verisk Analytics, Inc. | 股票-工業 | 1.26% | -1.26% | EXIT | |
| 26 | PKST | Peakstone Realty Trust | 股票-其他 | 1.17% | -1.17% | EXIT | |
| 27 | 430 | Terns Pharmaceuticals Inc | 股票-其他 | 1.11% | -1.11% | EXIT | |
| 28 | ✓ | Terns Pharmaceuticals Inc | 股票-其他 | 1.11% | -1.11% | EXIT | |
| 29 | ✓ | Silicon Laboratories Inc | 股票-其他 | 1.11% | -1.11% | EXIT | |
| 30 | ✓ | 股票-其他 | 1.00% | -1.00% | EXIT | ||
| 31 | ZIM | ZIM Integrated Shipping Services Ltd. | 股票-其他 | 0.98% | -0.98% | EXIT | |
| 32 | ✓ | Zim Integrated Shipping Serv | 股票-其他 | 0.98% | -0.98% | EXIT | |
| 33 | TXNM 5.75 06-01-54債券 | Txnm Energy Inc | 債券 | 0.90% | -0.17% | +100.00% | |
| 34 | ✓ | Janus Henderson Group PLC | 股票-其他 | 0.88% | -0.88% | EXIT | |
| 35 | ✓ | Banco Santander S.a. | 股票-其他 | 0.86% | -0.86% | EXIT | |
| 36 | UNF | Unifirst Corp/ma | 股票-其他 | 0.72% | -0.50% | — | |
| 37 | CSGS 3.875 09-15-28債券 | Csg Systems Internationa | 債券 | 0.68% | -0.68% | EXIT | |
| 38 | AXTA | Axalta Coating Systems Ltd. | 股票-原物料 | 0.64% | -0.33% | +0.57% | |
| 39 | ✓ | Axalta Coating Sys LTD | 股票-其他 | 0.60% | -0.60% | EXIT | |
| 40 | RPD 0.25 03-15-27債券 | Rapid7 Inc | 債券 | 0.54% | +0.19% | — | |
| 41 | ✓ | Apellis Pharmaceuticals Inc | 股票-其他 | 0.54% | -0.54% | EXIT | |
| 42 | APLSUSD | Apellis Pharmaceuticals Inc | 股票-其他 | 0.54% | -0.54% | EXIT | |
| 43 | AL | Air Lease CORP | 股票-其他 | 0.53% | -0.53% | EXIT | |
| 44 | BSY 0.375 07-01-27債券 | Bentley Systems | 債券 | 0.53% | -0.08% | — | |
| 45 | NTNX 0.5 12-15-29債券 | Nutanix Inc | 債券 | 0.50% | -0.50% | EXIT | |
| 46 | RDFN 0.5 04-01-27債券 | Redfin CORP | 債券 | 0.48% | -0.08% | — | |
| 47 | HALO 0.25 03-01-27債券 | Halozyme Therapeutics In | 債券 | 0.35% | -0.35% | EXIT | |
| 48 | AES | Aes CORP | 股票-公用事業 | 0.29% | -0.06% | — | |
| 49 | VRNS 1 09-15-29債券 | Varonis System Inc | 債券 | 0.29% | +0.16% | — | |
| 50 | CWAN | Clearwater Analytics Holdings, Inc. | 股票-科技 | 0.29% | -0.29% | EXIT |
| # | 代號 | 標的名稱 | 佔比變動 | 持倉量變化 | 異動類型 |
|---|---|---|---|---|---|
| 1 | WBD | Warner Bros. Discovery, Inc. | +2.9% | +1005.90% | 加碼 |
| 2 | JHG | Janus Henderson Group plc | +2% | +42.44% | 加碼 |
| 3 | EA | Electronic Arts Inc | +1.7% | +38.18% | 加碼 |
| 4 | WBD | Warner Bros Discovery Inc | +1.4% | +41.89% | 加碼 |
| 5 | HO1 | Hologic Inc | +1% | +19.73% | 加碼 |
| 6 | ✓ | Janus Henderson Group PLC | +0.8% | +1185.83% | 加碼 |
| 7 | TXNM | Txnm Energy Inc | +0.7% | +17.08% | 加碼 |
| 8 | DBRG | Digitalbridge Group Inc | +0.7% | +39.83% | 加碼 |
| 9 | TXNM 5.75 06-01-54債券 | Txnm Energy Inc | +0.5% | +100.00% | 加碼 |
| 10 | ✓ | Axalta Coating Sys LTD | +0.4% | +190.61% | 加碼 |
| 11 | NSC | Norfolk Southern CORP | +0.3% | +3.88% | 加碼 |
| 12 | GTLS | Chart Industries Inc | +0.2% | +0.86% | 加碼 |
| 13 | NTNX 0.5 12-15-29債券 | Nutanix Inc | +0.1% | +42.86% | 加碼 |
| 14 | DKS | Dick's Sporting Goods Inc | +0.1% | +386.18% | 加碼 |
| 15 | KVUE | Kenvue Inc | +0.1% | +1.51% | 加碼 |
| 16 | ✓ | Kenvue Inc | +0.1% | +0.81% | 加碼 |
| 17 | CSGS 3.875 09-15-28債券 | Csg Systems Internationa | 0% | — | 不變 |
| 18 | RDFN 0.5 04-01-27債券 | Redfin CORP | 0% | — | 不變 |
| 19 | BHF | Brighthouse Financial Inc | 0% | +16.12% | 加碼 |
| 20 | PRA | Proassurance CORP | 0% | +8.75% | 加碼 |
| 21 | BSY 0.375 07-01-27債券 | Bentley Systems | 0% | — | 不變 |
| 22 | XHC | Heritage Commerce CORP | 0% | +11.99% | 加碼 |
| 23 | HALO 0.25 03-01-27債券 | Halozyme Therapeutics In | — | — | 不變 |
| 24 | BVE | Diamond Hill Investment Grp | — | +1.61% | 加碼 |
| 25 | NWE | Northwestern Energy Group In | — | -3.28% | 減碼 |
| 26 | FFWM | First Foundation Inc | — | +2.51% | 加碼 |
| 27 | RPD 0.25 03-15-27債券 | Rapid7 Inc | 0% | — | 不變 |
| 28 | VRNS 1 09-15-29債券 | Varonis System Inc | 0% | — | 不變 |
| 29 | UTE0 | Cantaloupe Inc | 0% | -18.15% | 減碼 |
| 30 | 7WH | Udemy Inc | 0% | +2.51% | 加碼 |
| 31 | AXTA | Axalta Coating Systems Ltd. | -0.1% | +0.57% | 加碼 |
| 32 | IMXI | International Money Express | -0.1% | -62.56% | 減碼 |
| 33 | GLAD 5.875 10-01-30債券 | Gladstone Capital CORP | -0.1% | -50.00% | 減碼 |
| 34 | 628 | Semrush Holdings Inc-a | -0.6% | -78.70% | 減碼 |
| 35 | AM6 | Amicus Therapeutics Inc | -0.9% | -85.27% | 減碼 |
| 36 | ✓ | Csg Systems International In | -1.1% | -86.58% | 減碼 |
| 37 | AL | Air Lease CORP | -1.5% | -75.50% | 減碼 |
| 38 | CWAN | Clearwater Analytics Holdings, Inc. | -2% | -87.48% | 減碼 |
| 39 | SDA | Sealed Air CORP | -2.2% | -89.97% | 減碼 |
| 40 | PEN | Penumbra Inc | — | NEW | 新建倉 |
| 41 | ✓ | Cyberark Software LTD. Cmn | — | EXIT | 清倉 |
| 42 | EXK | Exact Sciences CORP | — | EXIT | 清倉 |
| 43 | CMA | Comerica Inc | — | EXIT | 清倉 |
| 44 | MASI* | Masimo CORP | — | NEW | 新建倉 |
| 45 | CDTX | Cidara Therapeutics Inc | — | EXIT | 清倉 |
| 46 | EA | Electronic Arts Inc. | — | NEW | 新建倉 |
| 47 | WBS | Webster Financial CORP | — | NEW | 新建倉 |
| 48 | T86 | Tri Pointe Homes Inc | — | NEW | 新建倉 |
| 49 | ✓ | Avadel Pharmaceuticals PLC ADR | — | EXIT | 清倉 |
| 50 | TGNA | Tegna Inc | — | EXIT | 清倉 |
根據 SEC 官方 Form 13F 申報備案，Water Island Capital LLC 在 Q1 2026 季度的美股持倉總市值約為 US$10.8億，共申報了 98 個公開持股部位。
在 Q1 2026 季度，Water Island Capital LLC 按市值排列的前三大核心持股分別為：EA (5.7%)、JHG (5.3%)、WBD (5.0%)。其中最大持股部位 EA 佔據整體投資組合約 5.7% 的權重。
精選 AlphaSMO 大戶持股與內部人交易深度分析，提升投資決策勝率
完整解讀 Form 13F 申報規範、1 億美元門檻與 45 天延遲申報機制，學會如何追蹤頂級對沖基金與機構法人持倉動向。
本季最大新建倉標的
PEN
市值: US$3943.6萬
本季最大獲利了結 / 清倉標的
CYBERARK SOFTWARE LTD. CMN
前期市值: US$3865.0萬
在 Q1 2026 季度中，Water Island Capital LLC 共進行了 144 項持倉異動，包含新建倉 59 個部位、加碼 23 個部位、減碼 10 個部位以及清倉 52 個部位。 其中最大新建倉標的為 PEN。 本季清倉部位包含 CYBERARK SOFTWARE LTD. CMN。
本頁面所有持股數據均直接同步自美國證券交易委員會（SEC）EDGAR 官方系統之 13F-HR / 13F-HR/A 季度申報文件。AlphaSMO 透過機器解析 CUSIP 與個股對照，提供 100% 精準對齊的歷史時序數據集，並支援 Schema.org 結構化資料格式。
解析公司高管、董事與 10% 大股東之 Form 4 內部人交易申報，掌握高管自家股票買賣第一手訊號。
深入剖析 5% 股益申報門檻、13D 與 13G 之差異，以及最新 SEC 申報時程規範，洞察機構法人的激進投資動向。