Skip to content
Disclosery

Twin Securities, Inc.

Follow

13F filer, CIK 1351351, New York, NY

Twin Securities, Inc. reported $223,450,874 across 13 holdings for the quarter ended 2026-06-30, in a 13F-HR filed 2026-08-14. Its ten largest share positions make up 99.9% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001172661-26-003725

Period
2026-06-30
Reported value
$223M
Holdings
13
Top 10 weight
99.9%
New
8
Sold out
12

Largest buys vs the previous quarter

SecurityShares changeApprox. value
EAadded+81,493$16.7M
APGEnew+120,000$15.9M
ROKUnew+105,660$14.6M
BLDnew+39,948$14.2M
KVUEadded+274,460$5.24M

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
CWANexited-1,164,090-$27.5M
HOLXexited-179,036-$13.5M
WBDreduced-492,903-$13.1M
ACLXexited-53,982-$6.2M
TERNexited-115,958-$6.11M

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, Q2 2026

Share positions as resolved from 13F-HR 0001172661-26-003725, largest first. % of portfolio is the value over $195,839,002, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
EAELECTRONIC ARTS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 239,836 shares; 2026Q1: 446,948 shares; 2026Q2: 528,441 shares 528,441$108M55.33%+81,493Timeline
WBDWARNER BROS DISCOVERY INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 127,717 shares; 2025Q4: 1,114,989 shares; 2026Q1: 1,299,915 shares; 2026Q2: 807,012 shares 807,012$21.5M10.99%-492,903Timeline
APGEAPOGEE THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: not reported; 2026Q2: 120,000 shares 120,000$15.9M8.13%newTimeline
ROKUROKU INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: not reported; 2026Q2: 105,660 shares 105,660$14.6M7.45%newTimeline
KVUEKENVUE INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 405,583 shares; 2026Q1: 480,517 shares; 2026Q2: 754,977 shares 754,977$14.4M7.37%+274,460Timeline
BLDTOPBUILD CORQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: not reported; 2026Q2: 39,948 shares 39,948$14.2M7.23%newTimeline
SKYDPARAMOUNT SKYDANCE CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: not reported; 2026Q2: 334,724 shares 334,724$3.3M1.69%newTimeline
OGNORGANON & COQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: not reported; 2026Q2: 175,100 shares 175,100$2.37M1.21%newTimeline
TICTIC SOLUTIONS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 405,768 shares; 2025Q2: 434,568 shares; 2025Q3: 123,056 shares; 2025Q4: 77,339 shares; 2026Q1: 77,339 shares; 2026Q2: 77,339 shares 77,339$626K0.32%0Timeline
RNAATRIUM THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 49,913 shares; 2026Q2: 26,517 shares 26,517$357K0.18%-23,396Timeline
NSCNORFOLK SOUTHN CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 25,200 shares; 2026Q1: not reported; 2026Q2: 652 shares 652$205K0.1%newTimeline

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
WBDWARNER BROS DISCOVERY INC Stockput759,600$20.3Mnew
EAELECTRONIC ARTS INC Stockput35,900$7.36Mnew

Sold out in Q2 2026

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

SecurityShares beforeValue beforeType
CWANCLEARWATER ANALYTICS HLDGS I1,164,090$27.5Mshares
HOLXHOLOGIC INC179,036$13.5Mshares
ACLXARCELLX INC53,982$6.2Mshares
TERNTERNS PHARMACEUTICALS INC115,958$6.11Mshares
APLSAPELLIS PHARMACEUTICALS INC127,440$5.13Mshares
RVMDREVOLUTION MEDICINES INC39,000$3.79Mput
RVMDREVOLUTION MEDICINES INC38,593$3.75Mshares
OSONESTREAM INC60,372$1.45Mshares
TTWOTAKE-TWO INTERACTIVE SOFTWAR6,500$1.28Mshares
DAWNDAY ONE BIOPHARMACEUTICALS I31,626$678Kshares
MANUMANCHESTER UTD PLC NEW14,920$251Kshares
SGRYSURGERY PARTNERS INC10,025$119Kshares

How Q2 2026 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 0001172661-26-003725 base2026-08-14acceptance time not in the bulk data set

Filings

Every filing of this filer: 13F reports and notices, the 13D and 13G it filed or is a reporting person of, and Forms 3, 4 and 5 it reported as an owner.

FilingSubjectFiledAcceptedIngested
13F-HR 0001172661-26-003725 Quarter ended 2026-06-302026-08-14acceptance time not in the bulk data set
13F-HR 0001172661-26-002293 Quarter ended 2026-03-312026-05-15acceptance time not in the bulk data set
13F-HR 0001172661-26-000903 Quarter ended 2025-12-312026-02-17acceptance time not in the bulk data set
13F-HR 0001172661-25-005055 Quarter ended 2025-09-302025-11-14acceptance time not in the bulk data set
13F-HR 0001172661-25-003469 Quarter ended 2025-06-302025-08-14acceptance time not in the bulk data set
13F-HR 0001172661-25-002344 Quarter ended 2025-03-312025-05-15acceptance time not in the bulk data set
13F-HR 0001172661-25-001149 Quarter ended 2024-12-312025-02-14acceptance time not in the bulk data set
13F-HR 0001172661-24-005236 Quarter ended 2024-09-302024-11-14acceptance time not in the bulk data set
13F-HR 0001172661-24-003547 Quarter ended 2024-06-302024-08-14acceptance time not in the bulk data set
13F-HR 0001172661-24-002485 Quarter ended 2024-03-312024-05-15acceptance time not in the bulk data set
13F-HR 0001172661-24-001530 Quarter ended 2023-12-312024-02-14acceptance time not in the bulk data set
13F-HR 0001172661-23-004031 Quarter ended 2023-09-302023-11-14acceptance time not in the bulk data set
13F-HR 0001172661-23-003160 Quarter ended 2023-06-302023-08-14acceptance time not in the bulk data set
13F-HR 0001172661-23-002277 Quarter ended 2023-03-312023-05-15acceptance time not in the bulk data set
13F-HR 0001172661-23-001349 Quarter ended 2022-12-312023-02-14acceptance time not in the bulk data set
13F-HR 0001172661-22-002585 Quarter ended 2022-09-302022-11-14acceptance time not in the bulk data set
13F-HR 0001172661-22-001977 Quarter ended 2022-06-302022-08-15acceptance time not in the bulk data set
13F-HR 0001172661-22-001436 Quarter ended 2022-03-312022-05-16acceptance time not in the bulk data set
13F-HR 0001172661-22-000847 Quarter ended 2021-12-312022-02-14acceptance time not in the bulk data set
13F-HR 0001172661-21-002362 Quarter ended 2021-09-302021-11-15acceptance time not in the bulk data set
13F-HR 0001172661-21-001842 Quarter ended 2021-06-302021-08-16acceptance time not in the bulk data set
13F-HR 0001172661-21-001298 Quarter ended 2021-03-312021-05-17acceptance time not in the bulk data set
13F-HR 0001172661-21-000829 Quarter ended 2020-12-312021-02-16acceptance time not in the bulk data set
13F-HR 0001172661-20-002283 Quarter ended 2020-09-302020-11-16acceptance time not in the bulk data set
13F-HR 0001172661-20-001848 Quarter ended 2020-06-302020-08-14acceptance time not in the bulk data set
13F-HR 0001172661-20-001385 Quarter ended 2020-03-312020-05-15acceptance time not in the bulk data set
13F-HR 0001172661-20-000868 Quarter ended 2019-12-312020-02-14acceptance time not in the bulk data set
13F-HR 0001172661-19-002337 Quarter ended 2019-09-302019-11-14acceptance time not in the bulk data set
13F-HR 0001172661-19-001867 Quarter ended 2019-06-302019-08-14acceptance time not in the bulk data set
13F-HR 0001172661-19-001350 Quarter ended 2019-03-312019-05-15acceptance time not in the bulk data set
13F-HR 0001172661-19-000833 Quarter ended 2018-12-312019-02-14acceptance time not in the bulk data set
13F-HR 0001172661-18-002187 Quarter ended 2018-09-302018-11-14acceptance time not in the bulk data set
13F-HR 0001172661-18-001688 Quarter ended 2018-06-302018-08-14acceptance time not in the bulk data set
13F-HR 0001172661-18-001221 Quarter ended 2018-03-312018-05-15acceptance time not in the bulk data set
13F-HR 0001172661-18-000603 Quarter ended 2017-12-312018-02-14acceptance time not in the bulk data set
13F-HR 0001172661-17-002097 Quarter ended 2017-09-302017-11-14acceptance time not in the bulk data set
13F-HR 0001172661-17-001702 Quarter ended 2017-06-302017-08-14acceptance time not in the bulk data set
13F-HR 0001172661-17-001211 Quarter ended 2017-03-312017-05-15acceptance time not in the bulk data set
13F-HR 0001172661-17-000779 Quarter ended 2016-12-312017-02-14acceptance time not in the bulk data set
13F-HR 0001172661-16-004331 Quarter ended 2016-09-302016-11-14acceptance time not in the bulk data set
13F-HR 0001172661-16-003876 Quarter ended 2016-06-302016-08-15acceptance time not in the bulk data set
13F-HR 0001172661-16-003437 Quarter ended 2016-03-312016-05-16acceptance time not in the bulk data set
13F-HR 0001172661-16-002946 Quarter ended 2015-12-312016-02-16acceptance time not in the bulk data set
13F-HR 0001172661-15-002092 Quarter ended 2015-09-302015-11-16acceptance time not in the bulk data set
13F-HR 0001172661-15-001661 Quarter ended 2015-06-302015-08-14acceptance time not in the bulk data set
13F-HR 0001172661-15-001195 Quarter ended 2015-03-312015-05-15acceptance time not in the bulk data set
13F-HR 0001172661-15-000606 Quarter ended 2014-12-312015-02-17acceptance time not in the bulk data set
13F-HR 0001172661-14-001739 Quarter ended 2014-09-302014-11-13acceptance time not in the bulk data set
13F-HR 0001398344-14-004160 Quarter ended 2014-06-302014-08-13acceptance time not in the bulk data set
13F-HR 0001398344-14-002772 Quarter ended 2014-03-312014-05-14acceptance time not in the bulk data set
13F-HR 0001398344-14-000987 Quarter ended 2013-12-312014-02-13acceptance time not in the bulk data set
13F-HR 0001398344-13-005361 Quarter ended 2013-09-302013-11-14acceptance time not in the bulk data set
13F-HR 0001398344-13-003790 Quarter ended 2013-06-302013-08-14acceptance time not in the bulk data set