Polymarket Historical Data for Backtesting: Free Datasets & Strategies
Access free Polymarket historical data for backtesting prediction market strategies. PolyHistorical provides sub-second order book snapshots for BTC, ETH, and SOL markets.
Backtesting prediction market strategies requires high-quality historical data — and until PolyHistorical, there was no reliable source of Polymarket historical data for backtesting. Now you can access it for free.
What Makes PolyHistorical Different
Most crypto data platforms focus on centralized exchanges. PolyHistorical is purpose-built for Polymarket prediction markets, offering:
- Sub-second order book snapshots — 300ms resolution for realistic simulation
- Full depth data — not just top-of-book, but every bid and ask level
- Free BTC market data — no paywall on the most popular market
- Months of historical coverage — deep enough for statistically meaningful backtests
Strategy Ideas to Backtest
Here are proven strategy categories you can validate with PolyHistorical data:
- Mean reversion — prediction market prices tend to revert around fair value, especially in short timeframes
- Momentum/trend following — ride directional moves when order book depth is asymmetric
- Market making — provide liquidity by quoting both sides, profiting from the spread
- Cross-market arbitrage — exploit price discrepancies between different timeframes of the same underlying
Getting Free Data for Your Backtest
- Create a free PolyHistorical account — takes 30 seconds, no credit card
- Use the API or download a CSV dataset for your target market and date range
- Load the data into your backtesting framework (pandas, Backtrader, or custom)
- Replay order book snapshots and simulate your strategy against real depth
Why Free?
We believe every trader and researcher should have access to high-quality prediction market data. The free tier exists so you can build and validate strategies before deciding if Pro ($11/month) makes sense for production trading. No tricks, no trial period — just free data.