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Disclosery

Twin Securities, Inc.

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13F filer, CIK 1351351, New York, NY

Twin Securities, Inc. reported $170,662,006 across 14 holdings for the quarter ended 2024-12-31, in a 13F-HR filed 2025-02-14. Its ten largest share positions make up 97.37% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001172661-25-001149

Period
2024-12-31
Reported value
$171M
Holdings
14
Top 10 weight
97.37%
New
6
Sold out
6

Largest buys vs the previous quarter

SecurityShares changeApprox. value
Kadded+254,234$20.6M
JUNIPER NETWORKS INCadded+517,581$19.4M
HASHICORP INCadded+398,104$13.6M
ARCADIUM LITHIUM PLCnew+2,337,323$12M
ASPEN TECHNOLOGY INCnew+42,132$10.5M

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Largest sells vs the previous quarter

SecurityShares changeApprox. value
EDRreduced-232,535-$7.28M
STERICYCLE INCexited-75,722-$4.62M
VISTA OUTDOOR INCexited-104,576-$4.1M
AXONICS INCexited-28,559-$1.99M
NEXTexited-11,042-$52K

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Holdings, Q4 2024

Share positions as resolved from 13F-HR 0001172661-25-001149, largest first. % of portfolio is the value over $169,579,701, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
JUNIPER NETWORKS INCJUNIPER NETWORKS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 678,257 shares; 2024Q4: 1,195,838 shares 1,195,838$44.8M26.41%+517,581
KKELLANOVAQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 24,500 shares; 2024Q4: 278,734 shares 278,734$22.6M13.31%+254,234Timeline
HASHICORP INCHASHICORP INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 136,356 shares; 2024Q4: 534,460 shares 534,460$18.3M10.78%+398,104
SMARTSHEET INC. (CLASS A)SMARTSHEET INC. (CLASS A)Quarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 164,347 shares; 2024Q4: 313,073 shares 313,073$17.5M10.34%+148,726
HESS CORPHESS CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 95,663 shares; 2024Q4: 99,268 shares 99,268$13.2M7.79%+3,605
EDRENDEAVOR GROUP HLDGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 629,715 shares; 2024Q4: 397,180 shares 397,180$12.4M7.33%-232,535Timeline
ARCADIUM LITHIUM PLCARCADIUM LITHIUM PLCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 2,337,323 shares 2,337,323$12M7.07%new
ASPEN TECHNOLOGY INCASPEN TECHNOLOGY INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 42,132 shares 42,132$10.5M6.2%new
REVELYST INCREVELYST INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 504,940 shares 504,940$9.71M5.73%new
SUMMIT MATERIALS INC CLASS ASUMMIT MATERIALS INC CLASS AQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 81,000 shares 81,000$4.1M2.42%new
AMEDISYS INCAMEDISYS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 11,945 shares; 2024Q4: 29,105 shares 29,105$2.64M1.56%+17,160
SPRSPIRIT AEROSYSTEMS HLDGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 34,530 shares 34,530$1.18M0.69%newTimeline
MANUMANCHESTER UTD PLC NEWQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q1: restricted; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 36,266 shares; 2024Q4: 36,543 shares 36,543$634K0.37%+277Timeline

Options

Puts and calls, as filed. The amount and value describe the underlying shares, not the option premium, so they stay out of % of portfolio (H5).

SecurityTypeAmountValueChange
JUNIPER NETWORKS INCJUNIPER NETWORKS INC COMput28,900$1.08Mnew

Sold out in Q4 2024

Positions in the previous quarter's report that this quarter's report no longer lists.

SecurityShares beforeValue beforeType
STERICYCLE INCSTERICYCLE INC75,722$4.62Mshares
VISTA OUTDOOR INCVISTA OUTDOOR INC104,576$4.1Mshares
EDRENDEAVOR GROUP HLDGS INC76,300$2.18Mput
AXONICS INCAXONICS INC28,559$1.99Mshares
UNITED STATES STL CORP NEWUNITED STATES STL CORP NEW22,500$795Kcall
NEXTNEXTDECADE CORP11,042$52Kshares

How Q4 2024 was built

Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).

FilingRoleAmendmentFiledAcceptedIngested
13F-HR 0001172661-25-001149 base2025-02-14acceptance time not in the bulk data set