---
title: "HBK Master Fund L.P. — Ownership Dossier"
canonical: https://whiteintel.dev/entity/6a02c6e8-0020-5de8-a54d-79cfa86e4ed4
json: https://whiteintel.dev/api/public/dossier/6a02c6e8-0020-5de8-a54d-79cfa86e4ed4
identifier: icij:icijol-80075779
jurisdiction: KY
risk: Medium
source: WhiteIntel corporate-ownership graph
---

# HBK Master Fund L.P.

**Type:** Organization  
**Jurisdiction:** [KY](https://whiteintel.dev/jurisdictions/ky)  
**Identifier:** `icij:icijol-80075779`  
**Risk level:** Medium  
**Canonical dossier:** https://whiteintel.dev/entity/6a02c6e8-0020-5de8-a54d-79cfa86e4ed4  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/6a02c6e8-0020-5de8-a54d-79cfa86e4ed4  

## Ownership & control

### Holdings / subsidiaries

- **RCS Limited** (shareholder of) — https://whiteintel.dev/entity/31831f56-2462-5d30-9a56-915d16656703
- **Harlequin Insurance (Bermuda) SAC Limited** (shareholder of) — https://whiteintel.dev/entity/57afa94c-2a9e-5eca-ba4b-d0f8368a8f8a
- **Romagnola Re Limited** (shareholder of) — https://whiteintel.dev/entity/7f037fef-0428-5161-9895-6f08be278024

## Provenance

- ICIJ Offshore Leaks — https://offshoreleaks.icij.org/nodes/80075779

## Get the full, resolved dossier (agent-callable)

The above is the free teaser. The resolved **multi-hop UBO chain**, ownership **%**, full **financial history**, itemised **assets** and the hop-by-hop **exposure path** are the paid depth — callable as tools from your agent:

```bash
npx -y @whiteintel/mcp-server   # then: get_dossier · trace_ownership_path · check_offshore_exposure
```

Or unlock a one-off cited dossier for **HBK Master Fund L.P.** — https://whiteintel.dev/entity/6a02c6e8-0020-5de8-a54d-79cfa86e4ed4 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **HBK Master Fund L.P.**. Human view: https://whiteintel.dev/entity/6a02c6e8-0020-5de8-a54d-79cfa86e4ed4 · Structured JSON: https://whiteintel.dev/api/public/dossier/6a02c6e8-0020-5de8-a54d-79cfa86e4ed4._

_Risk levels are heuristic investigative leads, not legal determinations of beneficial ownership. Every claim carries a source; an absent edge means "not yet observed in current sources", not "does not exist"._