Private fund adviser · New York, NY
Twin Securities, Inc.
SEC-registered investment adviser · CRD 158318 · SEC 801-73786
At a glance
Twin Securities, Inc. is an SEC-registered investment adviser based in New York, New York, with $318 million in regulatory assets under management as of its Form ADV filed March 31, 2026. Its largest client group by assets is pooled investment vehicles. By Form ADV it is a private fund adviser, ranked 3,529th of 4,686 private fund advisers and 9,880th of 17,210 SEC-registered advisers by assets.
Main office 212-687-6948twincap.comLinkedInAs filed on Form ADV
- Regulatory AUM
- $318M
- Rank among private fund advisers
- #3,529 of 4,686
- Rank among all SEC RIAs
- #9,880 of 17,210
- Rank in New York
- #1,706 of 2,591
- Clients
- 5
- Accounts
- 5
- Discretionary
- 100% of AUM
- Employees
- 5
- Advisory staff
- 4
- Offices
- 1
Owners and executives on its Form ADV
- David J. SimonPresident, Chief Investment Officer
- Brendan M DonnellyChief Financial Officer and Chief Compliance Officer
Custody and brokerage
Who it serves
| Client type | Clients | Regulatory AUM | Share |
|---|---|---|---|
| Pooled investment vehicles | 4 | $260M | 82% |
| Other investment advisers | 1 | $58M | 18% |
Private funds
Twin Securities, Inc. reports 2 private funds with $260M in gross assets: hedge funds (Form ADV Item 7.B).
Disciplinary disclosures
Twin Securities, Inc. reports no disciplinary disclosures in Item 11 of Form ADV. Read the details on the SEC’s adviser search ↗
Services
- Portfolio management for pooled investment vehicles
- Portfolio management for businesses and institutions
How it’s paid
- A percentage of assets under management
- Performance-based fees
Form ADV and brochures on the SEC’s adviser search ↗twincap.com ↗
AtlasMembers
The full record on Twin Securities, Inc.
Ten years of SEC filings, its owners and contacts, and how it stacks up against its peers. Atlas members see all of it.
- Assets, accounts, clients and staff, ten years of filings
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- Growth over one, three and five years
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- Rank against 2,101 peers of its type and size
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- Owners and executives, with titles and stakes
- 2 namedLocked
- Main office, fax and compliance officer
- Locked
- Filing changes this year, with alerts
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Free while Atlas launches: create a free account and confirm your email. Every figure comes from SEC filings.
Background
Questions
How much does Twin Securities, Inc. manage?
Twin Securities, Inc. reports $318 million in regulatory assets under management across 5 accounts, 100% of it on a discretionary basis, on its Form ADV filed March 31, 2026.
What kind of firm is Twin Securities, Inc.?
Twin Securities, Inc. is a private fund adviser by its Form ADV answers. Private funds are at least half of its business by assets.
Who are Twin Securities, Inc.’s clients?
By assets, its largest client types are pooled investment vehicles ($260 million, 4 clients); other investment advisers ($58 million, 1 clients).
Does Twin Securities, Inc. manage private funds?
Yes. It reports 2 private funds with $260 million in gross assets, including hedge funds.
Does Twin Securities, Inc. have any disciplinary history?
Twin Securities, Inc. reports no disciplinary disclosures in Item 11 of its Form ADV. Check the SEC’s adviser search for the latest record.
Where these numbers come from
Every figure is Twin Securities, Inc.’s own answer on its latest Form ADV, from the SEC’s registered-adviser list as of October 1, 2026: regulatory assets and accounts (Item 5.F), clients by type (5.D), employees (5.A and 5.B), compensation (5.E) and services (5.G). Custodians come from Schedule D 5.K(3) of its latest filing (2026-03-31), which lists those holding 10% or more of separately managed account assets and the amount at each. “Hybrid” means some employees are also registered representatives of a broker-dealer (Item 5.B(2)); affiliated broker-dealers are the related persons it lists in Item 7.A and Schedule D. Firm type comes from its own answers: broker-dealer firms are registered broker-dealers themselves (Item 6.A); private fund advisers manage mostly private funds (Item 7.B, 5.D); wealth managers manage at least half their assets for individuals (5.D). Ranks compare it by regulatory assets with every SEC-registered adviser and with firms of its type. Figures are as of the firm’s last annual update, so they can lag recent deals and market moves. Regulatory AUM counts assets the firm continuously supervises and can differ from what a firm markets.
Not an endorsement or a recommendation. Before hiring any adviser, read its Form ADV Part 2A brochure and check its record on the SEC’s adviser search. How to check a financial advisor →