# Citadel Securities

**Canonical:** https://apis.io/providers/citadel-securities/  
**Website:** https://www.citadelsecurities.com  
**APIs profiled:** 0

Citadel Securities is one of the world's leading market makers and electronic trading firms, providing liquidity and price discovery across equities, options, exchange-traded funds, fixed income, currencies, and commodities for institutional and retail investors globally. Founded in 2002 by Ken Griffin, the firm operates a high-performance, technology-driven trading platform. It is a privately held financial-services company and does not publish a public developer API or developer portal; this profile tracks its identity and public infrastructure posture within the API Evangelist network.

## Kin Score — 1.2 / 100 (minimal)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 1.2).

| Facet | Score |
|---|---|
| Discoverability | 50.0 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 0.0 |
| Commercial Clarity | 0.0 |
| Access Clarity | 0.0 |

Regulatory layer — **Securities & Market Data**: 10.0 (matched via tags).

## Agent readiness — 0.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## Security (1)

- **Citadel Securities Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Company, Fintech, Financial-Services, Market Maker, Electronic Trading, Liquidity, Capital Markets

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/citadel-securities/). Scores are computed from the provider's own public artifacts under a published rubric.