aid: iex
name: IEX
description: >-
  IEX Group, Inc. operates IEX Exchange, a U.S. national securities exchange for
  equities founded to make trading fairer and more transparent, along with IEX
  Options (coming soon). IEX is known for its Speed Bump, the IEX Signal, and the
  D-Limit order type. Its developer- and data-facing surface is market data and
  connectivity rather than a public REST API: real-time depth-of-book and
  top-of-book feeds (DEEP+, DEEP, and TOPS, plus their SNAP variants) are
  distributed over the binary IEX Transport Protocol (IEX-TP v1), with published
  feed specifications, downloadable historical PCAP samples, and market
  statistics. Data access is arranged through a Data Subscriber Agreement and
  direct or third-party connectivity. Sector: fintech / financial markets
  infrastructure. Backed by Bain Capital Ventures, ICONIQ Capital, IVP, and
  Sapphire Ventures.
url: https://raw.githubusercontent.com/api-evangelist/iex/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- bain-capital-ventures
- iconiq-capital
- ivp
- sapphire-ventures
x-tier: stub
x-tier-reason: portfolio-lead
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
image: https://cdn.prod.website-files.com/63bc910a330e72662c5681bc/640645b90ac2aca1a1409fa6_IEX_Open-Graph.jpg
tags:
- Company
- Fintech
- Stock Exchange
- Market Data
- Trading
- Equities
- Options
- Financial Services
- Market Infrastructure
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.iex.io/
- type: Documentation
  url: https://www.iex.io/resources/trading/documents
- type: APIReference
  url: https://www.iex.io/resources/trading/market-data
- type: Pricing
  url: https://www.iex.io/resources/trading/fee-schedule
- type: StatusPage
  url: https://notifications.iex.io/status
- type: Blog
  url: https://www.iex.io/news
- type: Login
  url: https://auth.iextrading.com/
- type: TermsOfService
  url: https://www.iex.io/legal/terms
- type: PrivacyPolicy
  url: https://www.iex.io/legal/privacy
- type: DomainSecurity
  url: security/iex-domain-security.yml
- type: LLMsTxt
  url: llms/iex-llms.txt
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence