Quantopian

Quantopian was a Boston-based crowd-sourced quantitative investment firm and algorithmic-trading platform (backed by a16z and Bessemer Venture Partners) where members wrote, backtested, and shared Python trading algorithms against historical market data. The company ceased operations in November 2020 and its intellectual property was acquired by Robinhood; its public developer platform and hosted API are retired. Its widely-used open-source Python libraries - Zipline (backtesting), Pyfolio, Alphalens, Empyrical, and trading-calendars - remain published on PyPI and its GitHub organization stays live.

Quantopian is profiled on the APIs.io network. Tagged areas include Company, Algorithmic Trading, Quantitative Finance, FinTech, and Backtesting.

🌐 Visit website 📡 Source on GitHub
7.4/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5
0 APIs
CompanyAlgorithmic TradingQuantitative FinanceFinTechBacktestingOpen SourcePythonInvesting

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 7.4/100 · minimal
Contract Quality 0.0 / 25
Developer Ergonomics 0.0 / 20
Commercial Clarity 0.0 / 20
Operational Transparency 0.7 / 13
Governance 0.0 / 12
Discoverability 6.8 / 10
Agent readiness — 0/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/quantopian: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Quantopian Domain Security

DNSSEC · DMARC

SECURITY

Resources

Build 2

SDKs, sample code, and the tooling you integrate with

Packages
Packages
 GitHubOrganization
GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Company 1

The organization behind the API

Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: quantopian
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/quantopian.png
name: Quantopian
description: Quantopian was a Boston-based crowd-sourced quantitative investment firm and algorithmic-trading platform (backed
  by a16z and Bessemer Venture Partners) where members wrote, backtested, and shared Python trading algorithms against historical
  market data. The company ceased operations in November 2020 and its intellectual property was acquired by Robinhood; its
  public developer platform and hosted API are retired. Its widely-used open-source Python libraries - Zipline (backtesting),
  Pyfolio, Alphalens, Empyrical, and trading-calendars - remain published on PyPI and its GitHub organization stays live.
url: https://raw.githubusercontent.com/api-evangelist/quantopian/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-status: defunct
x-backed-by:
- a16z
- bessemer-venture-partners
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Algorithmic Trading
- Quantitative Finance
- FinTech
- Backtesting
- Open Source
- Python
- Investing
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Packages
  url: packages/quantopian-packages.yml
- type: GitHubOrganization
  url: https://github.com/quantopian
- type: DomainSecurity
  url: security/quantopian-domain-security.yml
- type: Website
  url: https://www.quantopian.com/
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 2
  pass: local-v1