Ionic Capital Management Llc
- Regulatory AUM
- $3.9B
- Discretionary
- $3.9B
- Clients
- 21
- Avg AUM / client
- $184M
- Accounts
- 21
- Employees
- 34
AUM over time
Annual snapshots from Form ADV filings · as of Mar 31, 2026
Who they serve
| Client type | Clients | AUM | % of AUM |
|---|---|---|---|
| Investment companies | 1 | $10.4M | 0.27% |
| Pooled investment vehicles (non-investment companies) | 20 | $3.9B | 99.7% |
Private funds (6)
Reported in Form ADV Section 7.B.(1), filing of Aug 2024 · $2.8B combined gross assets
| Fund | Type | Domicile | Gross assets | Owners |
|---|---|---|---|---|
| Ionic Volatility Arbitrage Master Fund Iii Ltd master | Hedge Fund | Cayman Islands | $2.4B | 3 |
| Ionic Capital Master Fund Ltd. master | Hedge Fund | Cayman Islands | $154M | 15 |
| Ionic Volatility Arbitrage Master Fund Ii Ltd master | Hedge Fund | Cayman Islands | $100M | 28 |
| Ionic Volatility Strategies Master Fund Ltd master | Hedge Fund | Cayman Islands | $66.2M | 1 |
| Ionic Value Master Fund Ltd master | Hedge Fund | Cayman Islands | $50.3M | 9 |
| Ionic Convex Strategies Master Fund Ltd. master | Hedge Fund | Cayman Islands | $12.4M | 5 |
People (7)
| Name | Role / title | Credentials | With firm since | Ownership |
|---|---|---|---|---|
| Baum, Bart, Ethan | Principal, Portfolio Manager, Chief Investment Officer | May 2006 (20y) | ≈ 18.75% – 50% via Ionic Capital Management Holdings Lp | |
| Stone, Daniel, Lazard | Principal, Portfolio Manager | May 2006 (20y) | ≈ 18.75% – 50% via Ionic Capital Management Holdings Lp | |
| Richardson, John, Christopher | Chief Operating Officer And General Counsel | Aug 2006 (20y) | Less than 5% | |
| Vaccarino, Arthur | Chief Technology Officer | Aug 2006 (20y) | Less than 5% | |
| Vecchio, Steven, Gerard | Chief Compliance Officer And Associate General Counsel | Apr 2013 (13y) | Less than 5% | |
| Begley, Matthew, Griffin | Chief Financial Officer | Feb 2014 (13y) | Less than 5% | |
| Baum, Lawrence, Joseph | Chief Risk Officer | Jul 2015 (11y) | Less than 5% |
Entity owners (Schedule A/B)
| Entity | Title / status | Since | Sch. | Ownership |
|---|---|---|---|---|
| Ionic Capital Management Holdings Lp | Sole Member Of Ionic Capital Management Llc | Feb 2011 | A | 75% or more |
| Ica Holdco Llc | Sole Member Of Ionic Capital Advisors Llc | Mar 2012 | A | 75% or more |
| Ionic Holdco Gp Llc | General Partner | Feb 2011 | B | GP / trustee / elected manager of Ionic Capital Management Holdings Lp (indirect) |
Estimated effective ownership (look-through of filed bands):
- Baum, Bart, Ethan: 25% – 50% of Ionic Capital Management Holdings Lp × 75% – 100% direct ≈ 18.75% – 50% of the firm
- Stone, Daniel, Lazard: 25% – 50% of Ionic Capital Management Holdings Lp × 75% – 100% direct ≈ 18.75% – 50% 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 (6, $2.8B gross assets)
| Fund | Type | Gross assets | Min. investment | Owners |
|---|---|---|---|---|
| Ionic Volatility Arbitrage Master Fund Iii Ltd | Hedge Fund | $2.4B | $100M | 3 |
| Ionic Capital Master Fund Ltd. | Hedge Fund | $154M | $5.0M | 15 |
| Ionic Volatility Arbitrage Master Fund Ii Ltd | Hedge Fund | $100M | $1.0M | 28 |
| Ionic Volatility Strategies Master Fund Ltd | Hedge Fund | $66.2M | $1.0M | 1 |
| Ionic Value Master Fund Ltd | Hedge Fund | $50.3M | $1.0M | 9 |
| Ionic Convex Strategies Master Fund Ltd. | Hedge Fund | $12.4M | $1.0M | 5 |
From Form ADV Section 7.B private fund reporting.
Documents (1 archived)
| Form | Period | Size | |
|---|---|---|---|
| Form ADV (full filing) | 03/31/2026 | 2.96 MB | View · PDF · Source ↗ |
Archived copies of the firm's regulatory filings, versioned by content hash.
Disciplinary disclosures
No disciplinary events reported on the firm's latest Form ADV filing.
How they charge
- • Percentage of assets under management
- • Performance-based fees
Services
- • Portfolio management for investment companies
- • Portfolio management for pooled investment vehicles
Custody
Firm reports having custody of client funds or securities (Item 9.A).
No custodian data reported or mined yet.
Source
All data on this page comes from this firm's Form ADV filings, reproduced without modification. Latest filing: Mar 31, 2026.
View current Form ADV (SEC/IAPD) ↗