Financial Data API
stockmere
Historically accurate financial data for quantitative research. No survivorship bias.
S&P 500 Historical Constituents
Query which stocks were in the S&P 500 on any date from 1976 to today. Eliminate survivorship bias in your backtests.
500+
Current Constituents
1976
Data From
MCP
AI Agent Ready
Why stockmere?
Historically Accurate
Know exactly which stocks were in the index on any given date. No survivorship bias.
REST API + MCP
Programmatic access via HTTP API or Model Context Protocol for AI agents.
Backtest-Ready
Essential data for quantitative research. Query by date, get the full constituent list.