Alpaca
📍 USBuild and deploy AI-driven trading algorithms commission-free — Alpaca's API-first infrastructure powers AInvest's live execution engine for stocks, ETFs, and options.
Integration Details
- RegionUS
- What You Can TradeStock, ETF, Option
- Account TypeEquity
- Partial SharesIn Shares, In Dollars
- Order TypesMarket, Limit, StopLimit, StopLoss, Multi-Leg, Bracket (OTOCO), OTO, OCO
- Order DurationDay, GTC, FOK
- Price DataReal Time
- Extended Hours4:00AM – 9:30AM EST, 4:00PM – 8:00PM EST
- RestrictionsLIMIT + DAY ONLY
Alpaca Scorecard
| Category | Score | Expert Verdict |
|---|---|---|
| Trading Platforms | 4.2 / 5 | "Alpaca's API-first design makes it a top choice for developers building automated trading strategies."— Bankrate, 2025 |
| Execution Speed | 4.5 / 5 | "Low-latency order routing puts Alpaca among the fastest US equities brokers for algorithmic traders."— TradingView Community, 2025 |
| Asset Variety | 3.8 / 5 | "Strong for US equities and options; the lack of futures and forex is the main limitation."— NerdWallet, 2025 |
| Charting & Tools | 3.5 / 5 | "The native UI is minimal — traders are expected to build their own dashboards via the REST API."— Investopedia, 2025 |
| AI Trading Ability | Yes ✓ | "Alpaca's API is purpose-built for automated, AI-powered strategies, with direct AInvest integration."— AInvest Research, 2026 |
| User Experience | 4.0 / 5 | "Developer-friendly and well-documented; beginners may prefer a platform with a richer native UI."— G2 Reviews, 2025 |
What Makes Alpaca Unique vs. Its Trade-offs
✓ Uniqueness & Strengths
- API-First Architecture: REST, WebSocket, and SSE APIs let AInvest execute trades programmatically with sub-100ms latency.
- AI Integration with AInvest: Connect your Alpaca account in AInvest and let the AI engine auto-execute signals — from stock screener to live order in seconds. Step 1: Open Alpaca account. Step 2: Copy your API key from Alpaca dashboard. Step 3: Paste into AInvest broker connect. Step 4: Enable AI Auto-Trade in your AInvest strategy settings.
- Commission-Free & No Minimum: Zero commissions on stocks, ETFs, and options with no account minimum — ideal for smaller accounts testing AI strategies.
- Fractional Shares: Trade partial shares in dollars or units, enabling precise AI-driven position sizing regardless of share price.
✗ Risk Considerations
- Account Fees: No inactivity or transfer-out fees, but crypto trading (via Alpaca Crypto) may carry spread costs. Always confirm current fee schedules.
- Learning Curve: Alpaca is developer-centric. Non-programmers will need third-party UIs or the AInvest app to interact with their account comfortably.
- Research Limitations: No proprietary fundamental research or analyst ratings — users rely on third-party data or AInvest's AI news analysis.
- Asset Scope: US equities and options only. No futures, forex, or international markets.
Incentives & About Alpaca
| Tier / Account | Rate |
|---|---|
| Under $25,000 | 8.50% APR |
| $25,000 – $100,000 | 7.75% APR |
| Over $100,000 | 7.00% APR |
About Alpaca
Alpaca was founded in 2015 in Redwood City, California, by Yoshi Yokokawa and Hitoshi Harada. Originally focused on deep-learning image recognition for financial data, the company pivoted in 2018 to launch a commission-free stock trading API that would democratize algorithmic trading for individual developers. The platform quickly gained traction in the fintech and quantitative trading communities, raising funding from notable investors including Spark Capital and Portage Ventures.
Today, Alpaca powers thousands of automated trading bots and robo-advisory applications globally. Its infrastructure serves individual algo-traders, hedge funds, and fintech companies alike. By integrating directly with AInvest, Alpaca users can leverage enterprise-grade AI analysis and one-click strategy automation without writing a single line of code.