AI-powered trading platform for backtesting, paper trading and live algo trading on US stocks and ETFs
US stock screener and research workspace for self-directed investors
Stage
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Founded
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Based in
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Pricing model
Freemium
Freemium
Pricing
Free plan (no time limit, no card required): replay, trading journal, backtests and paper trading. Trader: $29/month or $290/year includes Spyglass AI (up to 30 messages/day), unlimited replays, overfitting checks. Quant: $79/month or $790/year adds live trading, 75 Spyglass messages/day, unlimited
Free plan includes one complete introductory AI Mode run with six one-time credits. Premium includes two hundred credits per calendar month. Final subscription prices and billing terms are shown before payment.
Key features
Spyglass AI: describe any setup or indicator and it builds and tests the strategy
Market replay to practice trading past market days without risking money
Trading journal to import, replay and analyze your trades
Backtesting with overfitting checks to validate strategies on historical data
Paper trading to deploy strategies risk-free against live market data
Live trading with broker connection and risk controls
Dead Man's Switch to close positions if browser stops responding
No coding required; builds strategies from natural language descriptions
Access to 11,511 US stocks and ETFs
Portfolio analytics including expectancy, MAE, MFE and performance attribution
Stock screening with customizable filters
Inspect financial statements and company filings
Valuation analysis with explicit assumptions
AI-assisted analysis and research support
Portfolio tools and saved workspaces
Dated price history and market data
Ownership records and fund holdings
Alerts and export functionality
Thesis workspace for documenting investment cases
Stock Sense MCP connector integration
What makes it different
AI builds strategies from plain language without any coding needed
Complete workflow from practice to live trading in one platform
Overfitting checks built in to every strategy test
Replay any past trade on the chart to learn from it
Free plan with no time limit and no card required
Combines dated public filings with current market prices and transparent calculations in one workspace
Emphasizes maintaining transparency about data freshness and source attribution
Designed specifically to help test investment theses with evidence-based research
Supports challenging investment assumptions with AI assistance checked against underlying sources
Public company research is open and accessible without requiring an account
TraderPier
US Stock Sense