Atom Investors Lp
- Regulatory AUM
- $6.8B
- Discretionary
- $6.8B
- Clients
- 7
- Avg AUM / client
- $975M
- Accounts
- 7
- Employees
- 24
AUM over time
Annual snapshots from Form ADV filings · as of Jul 27, 2026
Who they serve
| Client type | Clients | AUM | % of AUM |
|---|---|---|---|
| High net worth individuals | 1 | $189M | 2.77% |
| Pooled investment vehicles (non-investment companies) | 6 | $6.6B | 97.2% |
Private funds (1)
Reported in Form ADV Section 7.B.(1), filing of Oct 2024 · $1.6B combined gross assets
| Fund | Type | Domicile | Gross assets | Owners |
|---|---|---|---|---|
| Atom Master Fund L.P. master | Hedge Fund | Cayman Islands | $1.6B | 13 |
People (3)
| Name | Role / title | Credentials | With firm since | Ownership |
|---|---|---|---|---|
| Qunibi, Basil | Chairman / Chief Executive Officer / Chief Investment Officer | Feb 2018 (9y) | ≈ 6.25% – 25% via Fusion Investors Llc | |
| Goldberg, Eliza, Katzter | Chief Compliance Officer | Aug 2022 (4y) | Less than 5% | |
| Avitabile, Lawrence, Allen | Chief Operating Officer / Chief Financial Officer | Sep 2022 (4y) | Less than 5% |
Entity owners (Schedule A/B)
| Entity | Title / status | Since | Sch. | Ownership |
|---|---|---|---|---|
| Atom Strategies Llc | Limited Partner | Dec 2019 | A | 50% – 75% |
| Fusion Investors Llc | Limited Partner | May 2018 | A | 25% – 50% |
| Fai Holdings Llc | Limited Partner | Dec 2021 | A | 5% – 10% |
| Atom Gp Llc | General Partner | Feb 2018 | A | Less than 5% |
| Fusion Investors Llc | Managing Member | Feb 2018 | B | ≈ 0% – 2.5% via Atom Gp Llc |
Undisclosed: 0% – 20% of the firm is not attributable from the filed Schedule A bands.
Estimated effective ownership (look-through of filed bands):
- Qunibi, Basil: 25% – 50% of Fusion Investors Llc × 25% – 50% direct ≈ 6.25% – 25% of the firm
- Fusion Investors Llc: 25% – 50% of Atom Gp Llc × 0% – 5% direct ≈ 0% – 2.5% of the firm
Roster from the IAPD representatives feed; ownership and acquisition dates from Form ADV Schedule A/B. "Since" is the earliest filed registration or acquisition date.
Private funds (1, $1.6B gross assets)
| Fund | Type | Gross assets | Min. investment | Owners |
|---|---|---|---|---|
| Atom Master Fund L.P. | Hedge Fund | $1.6B | $5.0M | 13 |
From Form ADV Section 7.B private fund reporting.
Documents (1 archived)
| Form | Period | Size | |
|---|---|---|---|
| Form ADV (full filing) | 03/28/2026 | 1.86 MB | View · PDF · Source ↗ |
Archived copies of the firm's regulatory filings, versioned by content hash.
Disciplinary disclosures
Allegations: ADVISER WAS CENSURED FOR OFF-CHANNEL COMMUNICATIONS. NO FINE OR PENALTY WAS LEVIED ON THE ADVISER BY THE U.S. SECURITIES AND EXCHANGE COMMISSION. Status: Final Sanction Detail: N/A Summary: ON SEPTEMBER 23, 2024, ATOM ENTERED INTO A SETTLED ADMINISTRATIVE PROCEEDING WITH THE SEC RELATED TO ALLEGED VIOLATIONS OF RECORDKEEPING RULES UNDER SECTION 204 OF THE ADVISERS ACT AND RULE 204-2(A)(7) WITHOUT ADMITTING OR DENYING THE SEC'S ALLEGATIONS. THE ORDER ALLEGED THAT FROM MAY 2018 THROUGH OCTOBER 2021, CERTAIN ATOM PERSONNEL, INCLUDING SENIOR EMPLOYEES, ENGAGED IN OFF-CHANNEL COMMUNICATIONS USING PERSONAL DEVICES, FAILING TO RETAIN CERTAIN REQUIRED RECORDS. ATOM SELF-REPORTED THESE VIOLATIONS TO THE SEC. ATOM WAS CENSURED BUT NO FINANCIAL PENALTIES WERE IMPOSED. ATOM AGREED TO CEASE AND DESIST FROM FURTHER VIOLATIONS OF THE SECURITIES LAWS. THE SEC ORDER NOTES THAT THE SEC DETERMINED NOT TO IMPOSE A FINANCIAL PENALTY BECAUSE "ATOM SELF-REPORTED THE ... CONDUCT, TOOK PROMPT STEPS TO REMEDIATE THE VIOLATIONS AND COOPERATED WITH THE COMMISSION STAFF WITH RESPECT TO ITS INVESTIGATION OF ANOTHER ENTITY."
Disclosure text reproduced verbatim from the firm's own Form ADV filings.
How they charge
- • Percentage of assets under management
- • Fixed fees
- • Performance-based fees
Services
- • Portfolio management for pooled investment vehicles
- • Selection of other advisers
Custody
Reported custodians
- J.P. Morgan $71.2M (1% of AUM) Jul 2026
- Fiduciary Trust Company $40.6M (1% of AUM) Feb 2026
- Fidelity Brokerage Services $10.0M (0% of AUM) Feb 2026
- National Financial Services (Fidelity) $925K (0% of AUM) Mar 2023
Amounts as reported in ADV Item 5.K.(3) (custodians holding 10%+ of SMA assets).
Firm reports having custody of client funds or securities (Item 9.A).
Source
All data on this page comes from this firm's Form ADV filings, reproduced without modification. Latest filing: Jul 27, 2026.
View current Form ADV (SEC/IAPD) ↗