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Twin Securities, Inc.

SEC CIK
0001351351
Latest filing
Aug 14, 2026

Holdings in Q3 2025

Holdings as of Sep 30, 2025, filed Nov 14, 2025. Long positions only; changes compare share counts with Q2 2025.

Institution overview
Positions
13
+2 vs. Q2 2025
Portfolio value
$198.5M
+$85.5M (+75.6%) vs. Q2 2025
Filed
Nov 14, 2025
SEC
Holdings of Twin Securities, Inc. in Q3 2025
SecurityClassSharesValue% of portfolioShare changeActionHistory
VRNAVerona Pharma plcSPONSORED ADS501,113$53.5M26.9%+501,113NewHistory
KKellanovaStock553,655$45.4M22.9%+125,350+29.3%AddedHistory
MRUSMerus N.V.COM310,263$29.2M14.7%+310,263NewHistory
COOPMaverick Merger Sub 2, LLCCOM122,358$25.8M13.0%+122,358NewHistory
Cyberark Software LtdM2682V108SHS46,813$22.6M11.4%+46,813New–
SPRSpirit AeroSystems Holdings, Inc.COM CL A258,381$9.97M5.0%+4,738+1.9%AddedHistory
SGRYSurgery Partners, Inc.Stock142,872$3.09M1.6%−368,844−72.1%ReducedHistory
WNSWNS (Holdings) LtdCOM SHS32,814$2.50M1.3%+32,814NewHistory
WBDWarner Bros. Discovery, Inc.Stock127,717$2.49M1.3%+127,717NewHistory
TICTIC Solutions, Inc.COM123,056$1.64M0.8%−311,512−71.7%ReducedHistory
TRMLTourmaline Bio, Inc.COM33,301$1.59M0.8%+33,301NewHistory
PLYMPlymouth Industrial REIT, Inc.COM20,146$449.9K0.2%+20,146NewHistory
MANUManchester United plcORD CL A14,763$223.5K0.1%+2,620+21.6%AddedHistory

Options (2)

Puts and calls in the same filing. Amounts are the market value of the underlying shares, which is what 13F reports.

Option positions of Twin Securities, Inc. in Q3 2025
SecurityClassPutsCalls
BABoeing CoStock–$1.60M
WBDWarner Bros. Discovery, Inc.Stock–$1.13M

Sold out since Q2 2025 (6)

Positions held at the end of Q2 2025 that are gone from this filing.

Positions of Twin Securities, Inc. sold out since Q2 2025
SecurityClassShares in Q2 2025Value in Q2 2025% of portfolio in Q2 2025History
HESHess CorpStock204,131$28.3M25.0%History
BPMCBlueprint Medicines CorpCOM120,126$15.4M13.6%History
SWTXSpringWorks Therapeutics, Inc.COM101,402$4.76M4.2%History
DNBDun & Bradstreet Holdings, Inc.COM230,700$2.10M1.9%History
PZZAPapa Johns International IncStock35,249$1.73M1.5%History
FLFoot Locker, Inc.COM25,000$612.5K0.5%History