15-minute price & orderbook snapshots across 18,400+ Polymarket prediction markets, over 76+ trading days. Clean CSV, ready for backtesting and ML. Built and maintained by the Protodex team.
Every 15 minutes we snapshot the live Polymarket order book and mid price for thousands of active prediction markets. The result is a dense, gap-checked time series you can replay candle-by-candle — not a one-off scrape. Each row carries the market question, the outcome side, mid price, best bid and ask, bid/ask depth, the spread, and a UTC timestamp.
This is the raw material for backtesting prediction-market strategies, training models on real order-flow and price dynamics, calibrating election and event forecasts against realized outcomes, and academic or quant research where clean prediction-market history is otherwise hard to source. If you have been trying to pull this from the Polymarket API yourself, this is months of collection already done, deduplicated and aligned.
market question, outcome (Yes/No), mid price, best bid, best ask, bid depth, ask depth, spread, timestamp (UTC, 15-minute interval). Plain CSV — opens in pandas, Excel, DuckDB, or anything that reads a comma.
CSV bundle — $15 one-time. The full 18.5M-snapshot history as it stands today, delivered as CSV. Best for a single backtest, a research project, or a model training run. Get the bundle →
Quant Toolkit — $49. The full dataset bundled with a tested Jupyter notebook that turns it into answers: a market-calibration analysis with significance testing, an honest crash-recovery backtest, and a tool that extracts the market-implied BTC distribution from the strike ladder and flags arbitrage. For quants and researchers who want signal, not just CSVs. Get the Quant Toolkit →
PolyScope Pro — $29/month. The same dataset, refreshed and re-delivered every week so your models and dashboards stay current. Best for teams running live backtests or continuously training on fresh prediction-market data. Subscribe to PolyScope Pro →
What format is it? CSV (UTF-8), one row per market-outcome per 15-minute snapshot.
How fresh is the data? The one-time bundle is current as of purchase; PolyScope Pro refreshes weekly.
Can I use it commercially? Yes — for backtesting, research, and model training. Redistribution of the raw dataset is not permitted.
How is it collected? 15-minute price and order-book snapshots via the Polymarket CLOB API, deduplicated and time-aligned.
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