TS
Twin Securities, Inc.
13F filer · CIK 0001351351Reported Aug 14, 2026
Net seller this quarter
13F portfolio value$223MU.S. long equity reported on 13F
Positions116 new · 10 closed
Net flow last quarter-$9.48MBuys minus sells
Top 10 positions weight87.6%Concentration
Holdings
13F · last 4 quarters freeScroll for earlier quarters
| Company | Value | % of portfolio | % of company | POSITION CHANGE qoq % | First reported |
|---|---|---|---|---|---|
| Q2 2026Reported Aug 14, 202611 positions | |||||
| EAEAElectronic Arts Inc. | $108M | 48.49% | Not reported | +18.2% | Q4 2025 |
| $21.5M | 9.63% | 0.03% | -37.9% | Q2 2022 | |
| ATAPGEApogee Therapeutics, Inc. | $15.9M | 7.13% | 0.16% | New | Q2 2026 |
| $14.6M | 6.53% | 0.07% | New | Q2 2026 | |
| $14.4M | 6.46% | 0.04% | +57.1% | Q3 2023 | |
| TBLDTopBuild Corp | $14.2M | 6.34% | 0.14% | New | Q2 2026 |
| $3.3M | 1.48% | 0.03% | New | Q2 2026 | |
| $2.37M | 1.06% | 0.07% | New | Q2 2026 | |
| $626K | 0.28% | 0.04% | Not reported | Q1 2025 | |
| $357K | 0.16% | 0.16% | -46.9% | Q1 2026 | |
| $205K | 0.09% | 0.00% | Not reported | Q4 2025 | |
| Q1 2026Reported May 15, 202615 positions | |||||
| EAEAElectronic Arts Inc. | $91.1M | 44.21% | Not reported | +86.4% | Q4 2025 |
| $35.7M | 17.32% | 0.05% | +16.6% | Q2 2022 | |
| CACWANClearwater Analytics Holdings, Inc. | $27.5M | 13.36% | Not reported | +2260.6% | Q4 2025 |
| HHOLXHologic Inc | $13.5M | 6.57% | 0.08% | +111.8% | Q4 2025 |
| $8.28M | 4.02% | 0.03% | +18.5% | Q3 2023 | |
| AACLXArcellx, Inc. | $6.2M | 3.01% | 0.09% | New | Q1 2026 |
| TPTERNTerns Pharmaceuticals, Inc. | $6.11M | 2.97% | 0.10% | New | Q1 2026 |
| APAPLSApellis Pharmaceuticals, Inc. | $5.13M | 2.49% | 0.10% | New | Q1 2026 |
| $3.75M | 1.82% | 0.02% | New | Q1 2026 | |
| $1.28M | 0.62% | 0.00% | New | Q1 2026 | |
| DODAWNDay One Biopharmaceuticals, Inc. | $678K | 0.33% | 0.03% | New | Q1 2026 |
| $667K | 0.32% | 0.29% | +36.7% | Q1 2026 | |
| $509K | 0.25% | 0.04% | Not reported | Q1 2025 | |
| $251K | 0.12% | Not reported | +2.4% | Q1 2024 | |
| $119K | 0.06% | 0.01% | -94.1% | Q1 2025 | |
| Q4 2025Reported Feb 17, 202615 positions | |||||
| $49.1M | 18.77% | 0.18% | New | Q4 2025 | |
| EAEAElectronic Arts Inc. | $49M | 18.73% | Not reported | New | Q4 2025 |
| $32.1M | 12.28% | 0.05% | +773.0% | Q2 2022 | |
| ABRNAMAvidity Biosciences, Inc. | $26.3M | 10.07% | 0.24% | New | Q4 2025 |
| CCFLTConfluent, Inc. | $15.3M | 5.84% | 0.46% | New | Q4 2025 |
| $7.28M | 2.78% | 0.01% | New | Q4 2025 | |
| $7M | 2.67% | 0.02% | Not reported | Q3 2023 | |
| HHOLXHologic Inc | $6.3M | 2.41% | 0.04% | New | Q4 2025 |
| DDAYDayforce, Inc. | $2.71M | 1.04% | 0.02% | New | Q4 2025 |
| $2.63M | 1.01% | 0.13% | +19.2% | Q1 2025 | |
| CACWANClearwater Analytics Holdings, Inc. | $1.19M | 0.45% | Not reported | New | Q4 2025 |
| CTCDTXCidara Therapeutics, Inc. | $1.08M | 0.41% | 0.02% | New | Q4 2025 |
| $782K | 0.30% | 0.04% | -37.2% | Q1 2025 | |
| $607K | 0.23% | 0.02% | New | Q4 2025 | |
| $232K | 0.09% | Not reported | -1.3% | Q1 2024 | |
| Q3 2025Reported Nov 14, 202511 positions | |||||
| VPVRNAVerona Pharma plc | $53.5M | 26.58% | 0.07% | New | Q3 2025 |
| MMRUSMerus N.V. | $29.2M | 14.52% | 0.41% | New | Q3 2025 |
| CBCOOPCooperative Bankshares Inc | $25.8M | 12.82% | Not reported | New | Q3 2025 |
| SASPRSpirit AeroSystems Holdings, Inc. | $9.97M | 4.96% | 0.22% | +1.9% | Q4 2024 |
| $3.09M | 1.54% | 0.11% | -72.1% | Q1 2025 | |
| WWNSWNS (Holdings) Limited | $2.5M | 1.24% | 0.08% | New | Q3 2025 |
| $2.49M | 1.24% | 0.01% | Not reported | Q2 2022 | |
| $1.64M | 0.81% | 0.06% | -71.7% | Q1 2025 | |
| TBTRMLTourmaline Bio, Inc. | $1.59M | 0.79% | 0.13% | New | Q3 2025 |
| PIPLYMPlymouth Industrial REIT, Inc. | $450K | 0.22% | 0.05% | New | Q3 2025 |
| $224K | 0.11% | Not reported | +21.6% | Q1 2024 | |
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