Twin Securities, Inc. — 13F Holdings & Portfolio
CIK 1351351 · latest 13F-HR filed 2026-08-14
Twin Securities, Inc. manages $223.5M in 13F-reported U.S. long-equity assets across 13 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are EA (48.49%), WBD (9.63%), WBD (9.06%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 6 new positions, exited 11, added to 3, and trimmed 2.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
54TH FLOOR
NEW YORK, NY 10019
$223.5M
Long-equity book
13
Distinct positions
2026-06-30
Filed 2026-08-14
+6 / −11 / ↑3 / ↓2
vs 2026-03-31
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- ELECTRONIC ARTS INC$17.2M +18.9%
- KENVUE INC$6.1M +74.2%
- TIC SOLUTIONS INC$116.8K +22.9%
Top Trims
- WARNER BROS DISCOVERY INC-$14.2M -39.7%
- ATRIUM THERAPEUTICS INC-$310.7K -46.6%
New Positions
- APOGEE THERAPEUTICS INC$15.9M
- ROKU INC$14.6M
- TOPBUILD COR$14.2M
- PARAMOUNT SKYDANCE CORP$3.3M
- ORGANON & CO$2.4M
Exited Positions
- CLEARWATER ANALYTICS HLDGS I$27.5M
- HOLOGIC INC$13.5M
- ARCELLX INC$6.2M
- TERNS PHARMACEUTICALS INC$6.1M
- APELLIS PHARMACEUTICALS INC$5.1M
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | ELECTRONIC ARTS INC | EA | 285512109 | $108.4M | 48.49% | 528,441 | SH |
| 2 | WARNER BROS DISCOVERY INC | WBD | 934423104 | $21.5M | 9.63% | 807,012 | SH |
| 3 | WARNER BROS DISCOVERY INC Put | WBD | 934423104 | $20.3M | 9.06% | 759,600 | SH |
| 4 | APOGEE THERAPEUTICS INC | APGE | 03770N101 | $15.9M | 7.13% | 120,000 | SH |
| 5 | ROKU INC | ROKU | 77543R102 | $14.6M | 6.53% | 105,660 | SH |
| 6 | KENVUE INC | KVUE | 49177J102 | $14.4M | 6.46% | 754,977 | SH |
| 7 | TOPBUILD COR | COR | 89055F103 | $14.2M | 6.34% | 39,948 | SH |
| 8 | ELECTRONIC ARTS INC Put | EA | 285512109 | $7.4M | 3.29% | 35,900 | SH |
| 9 | PARAMOUNT SKYDANCE CORP | PSKY | 69932A204 | $3.3M | 1.48% | 334,724 | SH |
| 10 | ORGANON & CO | OGN | 68622V106 | $2.4M | 1.06% | 175,100 | SH |
| 11 | TIC SOLUTIONS INC | TIC | 00510N102 | $625.7K | 0.28% | 77,339 | SH |
| 12 | ATRIUM THERAPEUTICS INC | RNA | 04965N104 | $356.7K | 0.16% | 26,517 | SH |
| 13 | NORFOLK SOUTHN CORP | NSC | 655844108 | $205.1K | 0.09% | 652 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-08-14 | $223.5M | 13 | 0001172661-26-003725 |
| 2026-03-31 | 2026-05-15 | $206.1M | 17 | 0001172661-26-002293 |
| 2025-12-31 | 2026-02-17 | $261.7M | 17 | 0001172661-26-000903 |
| 2025-09-30 | 2025-11-14 | $201.2M | 15 | 0001172661-25-005055 |