Fourth Sail Capital Us Lp
- Regulatory AUM
- $3.7B
- Discretionary
- $3.7B
- Clients
- 7
- Avg AUM / client
- $525M
- Accounts
- 7
- Employees
- 3
AUM over time
Reported AUM from Form ADV filings, plotted by filing date · as of Mar 27, 2026
Who they serve
| Client type | Clients | AUM | % of AUM |
|---|---|---|---|
| Pooled investment vehicles (non-investment companies) | 7 | $3.7B | 100.0% |
Private funds (2)
Reported in Form ADV Section 7.B.(1), filing of Nov 2024 · $1.1B combined gross assets
| Fund | Type | Domicile | Gross assets | Owners |
|---|---|---|---|---|
| Fourth Sail Long Short Llc master | Hedge Fund | Delaware | $1.1B | 88 |
| Fourth Sail Discovery Llc master | Hedge Fund | Delaware | $42.4M | 13 |
People (2)
| Name | Role / title | Credentials | With firm since | Ownership |
|---|---|---|---|---|
| Doria, Thiago | Cco, Cfo | Jul 2024 (2y) | Less than 5% | |
| Merenstein, Ariel, Natan | Ceo, Limited Partner | Jul 2024 (2y) | ≈ 14.06% – 50% via La Nina Capital Llc |
Entity owners (Schedule A/B)
| Entity | Title / status | Since | Sch. | Ownership |
|---|---|---|---|---|
| Fourth Sail Capital Lp | Owner | Jul 2024 | A | 75% or more |
| Fsc (Us) Llc | General Partner | Jul 2024 | A | Less than 5% |
| La Pinta Trust | Indirect Owner | Jul 2024 | B | ≈ 14.06% – 50% via La Pinta Partners Ltd |
| La Nina Capital Llc | Limited Partners | Apr 2018 | B | ≈ 18.75% – 50% via Fourth Sail Capital Lp |
| La Pinta Partners Ltd | Limited Partners | Apr 2018 | B | ≈ 18.75% – 50% via Fourth Sail Capital Lp |
| South Dakota Trust Company Llc | Trustee | Jul 2024 | B | GP / trustee / elected manager of La Pinta Trust (indirect) |
Undisclosed: 0% – 25% of the firm is not attributable from the filed Schedule A bands.
Estimated effective ownership (look-through of filed bands):
- Merenstein, Ariel, Natan: 75% – 100% of La Nina Capital Llc × 25% – 50% of Fourth Sail Capital Lp × 75% – 100% direct ≈ 14.06% – 50% of the firm
- La Pinta Trust: 75% – 100% of La Pinta Partners Ltd × 25% – 50% of Fourth Sail Capital Lp × 75% – 100% direct ≈ 14.06% – 50% of the firm
- La Nina Capital Llc: 25% – 50% of Fourth Sail Capital Lp × 75% – 100% direct ≈ 18.75% – 50% of the firm
- La Pinta Partners Ltd: 25% – 50% of Fourth Sail Capital 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 (2, $1.1B gross assets)
| Fund | Type | Gross assets | Min. investment | Owners |
|---|---|---|---|---|
| Fourth Sail Long Short Llc | Hedge Fund | $1.1B | $1.0M | 88 |
| Fourth Sail Discovery Llc | Hedge Fund | $42.4M | $5.0M | 13 |
From Form ADV Section 7.B private fund reporting.
Documents (1 archived)
| Form | Period | Size | |
|---|---|---|---|
| Form ADV (full filing) | 03/27/2026 | 1.8 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 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 27, 2026.
View current Form ADV (SEC/IAPD) ↗