Datasets:
Rebuild as quant-bench: hourly/daily OHLCV bars over high-liquidity resolved markets
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- README.md +169 -135
- polymarket/bars_daily/bars_0_10000.parquet +3 -0
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README.md
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license: cc-by-4.0
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language:
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- en
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pretty_name: Polymarket
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size_categories:
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task_categories:
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- other
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tags:
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- polymarket
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- prediction-markets
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- geopolitics
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- blockchain
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- polygon
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- market-microstructure
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configs:
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- config_name: markets
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data_files:
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- split: train
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path: "polymarket/markets/markets_*.parquet"
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- config_name:
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data_files:
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- split: train
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path: "polymarket/
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- config_name:
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data_files:
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- split: train
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path: "polymarket/
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---
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# Polymarket
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A
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trade
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discovery, calibration, and trader behaviour in prediction markets.
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| File group | Rows | Description |
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|---|---:|---|
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| `polymarket/markets/markets_*.parquet` |
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| `polymarket/
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| `polymarket/
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Each file group is chunked into 10,000-row parquet shards
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convention as the upstream release.
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## Provenance and attribution
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The raw market metadata
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[github.com/jbecker19/polymarket-data](https://github.com/jbecker19/polymarket-data).
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This dataset is a
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## Schemas
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### `markets/markets_*.parquet`
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| column | type | description |
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|---|---|---|
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| `id` | string | Polymarket market id (primary key). |
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| `condition_id` | string | Parent CTF condition id. |
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| `question` | string | The question prompt
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| `slug` | string | URL slug
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| `outcomes` | string | JSON
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| `outcome_prices` | string | JSON
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| `clob_token_ids` | string | JSON
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| `volume` | double | Cumulative
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| `liquidity` | double | Snapshot
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| `_fetched_at` | timestamp | Snapshot time at which this metadata row was scraped. |
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| `category` | string | **New column.** Always `"Geopolitics"` for this extract. |
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### `trades/trades_*.parquet`
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Each row is one on-chain trade fill. Unique key is
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`(transaction_hash, log_index)` — `transaction_hash` repeats because
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Polymarket uses batch fill.
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| column | type | description |
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|---|---|---|
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| `maker_amount` | int64 | Atomic units; divide by `1e6` for USDC or token units. |
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| `taker_amount` | int64 | Atomic units. |
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| `fee` | int64 | Polymarket fee in USDC atomic units. |
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| `timestamp` | timestamp | **Always NULL.** Join to `blocks/` to recover wall-clock. |
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| `_fetched_at` | timestamp | Scrape time. |
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| `_contract` | string | `"CTF Exchange"` or `"NegRisk CTF Exchange"`. |
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### `blocks/blocks_*.parquet`
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| column | type | description |
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|---|---|---|
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| `block_number` | int64 | Polygon block number. |
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| `timestamp` | string (ISO-8601) | Block timestamp, cast to `POSIXct` for arithmetic. |
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### Computing trade price and signed direction
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```
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price_cents = 100 * usdc_amount / token_amount
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= 100 * (maker_amount if maker_asset_id == '0' else taker_amount)
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/ (taker_amount if maker_asset_id == '0' else maker_amount)
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# Taker direction: positive = taker bought outcome tokens
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if maker_asset_id == '0':
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taker_signed_size = -taker_amount / 1e6 # taker delivered tokens; sold
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else:
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taker_signed_size = +maker_amount / 1e6 # taker delivered USDC; bought
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```
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## Quick start in R
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```r
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install.packages(c("arrow", "dplyr", "jsonlite", "
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library(arrow)
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library(dplyr)
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library(
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markets <- open_dataset("polymarket/markets/")
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blocks <- open_dataset("polymarket/blocks/")
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filter(
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collect() %>%
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arrange(
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left_join(collect(blocks), by = "block_number") %>%
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mutate(timestamp = as.POSIXct(timestamp, tz = "UTC")) %>%
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mutate(
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)
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```
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##
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```python
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from datasets import load_dataset
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markets
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```
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## License
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[CC-BY-4.0](https://creativecommons.org/licenses/by/4.0/). Please cite
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both this release and Jon Becker's upstream repository
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data in published work.
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## Citation
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```bibtex
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@misc{
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author = {Padmaperuma, Oliver},
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title = {Polymarket
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year = {2026},
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howpublished = {HuggingFace dataset, smf-ulm/polymarket-
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note = {Derived from Jon Becker's polymarket-data release at
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\url{https://github.com/jbecker19/polymarket-data}}
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}
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license: cc-by-4.0
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language:
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- en
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+
pretty_name: Polymarket Quant Bench — OHLCV bars for high-liquidity resolved markets
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size_categories:
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- 10M<n<100M
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task_categories:
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- other
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tags:
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- polymarket
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- prediction-markets
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- blockchain
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- polygon
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- market-microstructure
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- ohlcv
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- backtesting
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- quantitative-finance
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configs:
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- config_name: markets
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data_files:
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- split: train
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path: "polymarket/markets/markets_*.parquet"
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- config_name: bars_hourly
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data_files:
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- split: train
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path: "polymarket/bars_hourly/bars_*.parquet"
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- config_name: bars_daily
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data_files:
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- split: train
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path: "polymarket/bars_daily/bars_*.parquet"
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---
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# Polymarket Quant Bench — OHLCV bars for high-liquidity resolved markets
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A teaching-grade derivative of the [Polymarket](https://polymarket.com)
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on-chain trade history, designed for indicator-engineering and
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walk-forward back-testing assignments. Polymarket is a decentralised
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prediction market on the Polygon blockchain; binary contracts settle to
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one USDC if the underlying event occurs and zero otherwise.
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This release replaces the per-trade fill stream of the upstream dataset
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with **per-token OHLCV bars** at hourly and daily resolution, restricted
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to high-liquidity *resolved* markets so every market has a known outcome
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for P&L scoring and enough depth for rolling indicators.
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## Contents
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| File group | Rows | Description |
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|---|---:|---|
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| `polymarket/markets/markets_*.parquet` | 36,831 | One row per resolved market with cumulative volume >= $100,000 and >= 200 on-chain trade fills. Full upstream schema plus a `category` column. |
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| `polymarket/bars_hourly/bars_*.parquet` | 12,655,266 | One row per `(token_id, calendar hour)` with OHLCV plus trade and direction counts. |
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| `polymarket/bars_daily/bars_*.parquet` | 1,462,282 | One row per `(token_id, calendar day)`, aggregated from the hourly bars. |
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Each file group is chunked into 10,000-row parquet shards.
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## Provenance and attribution
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The raw market metadata and trade events were collected and released by
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**Jon Becker** at
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[github.com/jbecker19/polymarket-data](https://github.com/jbecker19/polymarket-data).
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This dataset is a derivative: market metadata is restricted to the
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filter described below and trades are aggregated into OHLCV bars. If you
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use this dataset, please also cite Jon Becker's release.
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## How prices are computed
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Each on-chain `OrderFilled` event swaps **USDC** for an **outcome
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token** (or vice versa). Both assets use 6 decimals, so the raw atomic
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ratio of USDC to token quantity is already a dimensionless probability
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in `[0, 1]` -- the price the Polymarket UI shows in cents-per-dollar.
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For each trade `t`:
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```
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if t.maker_asset_id == '0': # maker delivered USDC, taker delivered tokens
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usdc_amount = t.maker_amount
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token_amount = t.taker_amount
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taker_is_seller = True # taker handed over tokens -> sold
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else: # maker delivered tokens, taker delivered USDC
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usdc_amount = t.taker_amount
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token_amount = t.maker_amount
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taker_is_seller = False # taker handed over USDC -> bought
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price = usdc_amount / token_amount # in [0, 1]
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volume_usd = usdc_amount / 1e6 # in USD
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signed_size = (-1 if taker_is_seller else +1) * token_amount / 1e6
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```
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`price` is the implied probability of the outcome the token represents.
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## How bars are aggregated
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For each `(token_id, bar_period)` group:
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| Field | Formula |
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|---|---|
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| `open` | `price` of the first trade in the bar (ordered by `block_number, log_index`) |
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| `high` | `MAX(price)` |
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| `low` | `MIN(price)` |
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| `close` | `price` of the last trade |
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| `vwap` | `SUM(price * volume_usd) / SUM(volume_usd)` |
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| `volume_usd` | `SUM(volume_usd)` |
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| `n_trades` | total fills in the bar |
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| `n_buys` / `n_sells` | fills where the taker bought / sold outcome tokens |
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Bars are emitted **only when at least one trade occurred in the period**
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(sparse representation). Use `tidyr::fill()` or
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`data.table::nafill()` to forward-fill if a dense series is required by
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your indicator.
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The hour boundary is defined by `block_number // 1800` (Polygon ~2 s per
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block; 1 800 blocks = 1 hour). Wall-clock `period_start` is attached
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post-aggregation by looking up the first block of each hour in the
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blocks-timestamp index and extrapolating forward at 2 seconds per
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block.
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Bars are emitted **per token** rather than per market. A Polymarket
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market has two complementary tokens (YES and NO); the `markets` table
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exposes both via `clob_token_ids`. If you want a single market-level
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| 121 |
+
mid-price series, pair the two token series yourself.
|
| 122 |
+
|
| 123 |
+
## Filter applied to upstream markets
|
| 124 |
+
|
| 125 |
+
A market is included iff **all** of the following hold:
|
| 126 |
+
|
| 127 |
+
1. The market is **resolved** (one outcome price closed above 0.99 in
|
| 128 |
+
the upstream snapshot).
|
| 129 |
+
2. **Cumulative trading volume >= $100,000** -- removes the long
|
| 130 |
+
tail of dust markets.
|
| 131 |
+
3. **At least 200 on-chain trade fills** -- ensures enough
|
| 132 |
+
depth to compute rolling indicators meaningfully.
|
| 133 |
+
|
| 134 |
+
This intentionally trades coverage for per-market depth. About
|
| 135 |
+
36,831 markets remain out of the ~409 k in the upstream snapshot.
|
| 136 |
|
| 137 |
## Schemas
|
| 138 |
|
| 139 |
### `markets/markets_*.parquet`
|
| 140 |
|
| 141 |
+
Upstream columns from Jon Becker's release plus `category`. Notable
|
| 142 |
+
ones:
|
| 143 |
+
|
| 144 |
| column | type | description |
|
| 145 |
|---|---|---|
|
| 146 |
| `id` | string | Polymarket market id (primary key). |
|
| 147 |
| `condition_id` | string | Parent CTF condition id. |
|
| 148 |
+
| `question` | string | The question prompt. |
|
| 149 |
+
| `slug` | string | URL slug. |
|
| 150 |
+
| `outcomes` | string | JSON outcome labels, e.g. `["Yes","No"]`. |
|
| 151 |
+
| `outcome_prices` | string | JSON outcome prices at snapshot time. The winning outcome closes near 1. |
|
| 152 |
+
| `clob_token_ids` | string | JSON `[yes_token_id, no_token_id]`. Use to join bars to a market. |
|
| 153 |
+
| `volume` | double | Cumulative USDC traded. |
|
| 154 |
+
| `liquidity` | double | Snapshot depth. |
|
| 155 |
+
| `end_date` | timestamp | Useful as `resolution_date` for held-out cohorts. |
|
| 156 |
+
| `created_at` | timestamp | Market creation. |
|
| 157 |
+
| `category` | string | Best-effort topic label. Use cautiously. |
|
| 158 |
+
|
| 159 |
+
### `bars_hourly/bars_*.parquet` and `bars_daily/bars_*.parquet`
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 160 |
|
| 161 |
| column | type | description |
|
| 162 |
|---|---|---|
|
| 163 |
+
| `token_id` | string | CTF outcome-token id. |
|
| 164 |
+
| `period_start` | timestamp | Bar start, UTC. |
|
| 165 |
+
| `period_end` | timestamp | `period_start + 1 hour` (or `+ 1 day`). |
|
| 166 |
+
| `open` / `high` / `low` / `close` | double | Implied probability in `[0, 1]`. |
|
| 167 |
+
| `vwap` | double | Volume-weighted average price. |
|
| 168 |
+
| `volume_usd` | double | Total USDC traded in the bar. |
|
| 169 |
+
| `n_trades` | int64 | Number of `OrderFilled` events in the bar. |
|
| 170 |
+
| `n_buys` / `n_sells` | int64 | Taker-side direction counts. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 171 |
|
| 172 |
## Quick start in R
|
| 173 |
|
| 174 |
+
### Setup
|
| 175 |
+
|
| 176 |
```r
|
| 177 |
+
install.packages(c("arrow", "dplyr", "jsonlite", "lubridate", "slider",
|
| 178 |
+
"TTR", "PerformanceAnalytics", "glmnet"))
|
| 179 |
library(arrow)
|
| 180 |
library(dplyr)
|
| 181 |
+
library(slider)
|
| 182 |
+
```
|
| 183 |
+
|
| 184 |
+
### Build a per-token feature frame
|
| 185 |
|
| 186 |
+
```r
|
| 187 |
markets <- open_dataset("polymarket/markets/")
|
| 188 |
+
bars <- open_dataset("polymarket/bars_hourly/")
|
|
|
|
| 189 |
|
| 190 |
+
# Pick a large market and grab its YES token id.
|
| 191 |
+
m <- markets %>% filter(volume > 1e6) %>% head(1) %>% collect()
|
| 192 |
+
yes_token_id <- jsonlite::fromJSON(m$clob_token_ids)[1]
|
| 193 |
|
| 194 |
+
ts <- bars %>%
|
| 195 |
+
filter(token_id == yes_token_id) %>%
|
| 196 |
collect() %>%
|
| 197 |
+
arrange(period_start) %>%
|
|
|
|
|
|
|
| 198 |
mutate(
|
| 199 |
+
sma_24h = slide_dbl(close, mean, .before = 24, .complete = TRUE),
|
| 200 |
+
ema_24h = TTR::EMA(close, n = 24),
|
| 201 |
+
ret_1h = log(close / lag(close)),
|
| 202 |
+
rsi_14 = TTR::RSI(close, n = 14),
|
| 203 |
+
boll = TTR::BBands(close, n = 20, sd = 2)[, "pctB"],
|
| 204 |
+
days_to_resolution = as.numeric(difftime(m$end_date, period_start, units = "days"))
|
| 205 |
)
|
| 206 |
```
|
| 207 |
|
| 208 |
+
### Walk-forward elastic net + back-test
|
| 209 |
+
|
| 210 |
+
```r
|
| 211 |
+
library(glmnet)
|
| 212 |
+
library(PerformanceAnalytics)
|
| 213 |
+
|
| 214 |
+
fit <- cv.glmnet(X_train, y_train, alpha = 0.5)
|
| 215 |
+
signal <- predict(fit, newx = X_test, s = "lambda.min")
|
| 216 |
+
|
| 217 |
+
# 1% per-trade cost, threshold-based position.
|
| 218 |
+
pos <- sign(signal) * (abs(signal) > threshold)
|
| 219 |
+
ret <- pos * y_test - 0.01 * abs(diff(c(0, pos)))
|
| 220 |
+
charts.PerformanceSummary(ret)
|
| 221 |
+
```
|
| 222 |
+
|
| 223 |
+
## Streaming via the HuggingFace `datasets` library
|
| 224 |
|
| 225 |
```python
|
| 226 |
from datasets import load_dataset
|
| 227 |
+
markets = load_dataset("smf-ulm/polymarket-quant-bench", "markets", split="train")
|
| 228 |
+
bars_hourly = load_dataset("smf-ulm/polymarket-quant-bench", "bars_hourly", split="train", streaming=True)
|
| 229 |
+
bars_daily = load_dataset("smf-ulm/polymarket-quant-bench", "bars_daily", split="train")
|
| 230 |
```
|
| 231 |
|
| 232 |
## License
|
| 233 |
|
| 234 |
[CC-BY-4.0](https://creativecommons.org/licenses/by/4.0/). Please cite
|
| 235 |
+
both this release and Jon Becker's upstream repository.
|
|
|
|
| 236 |
|
| 237 |
## Citation
|
| 238 |
|
| 239 |
```bibtex
|
| 240 |
+
@misc{polymarket_quant_bench_2026,
|
| 241 |
author = {Padmaperuma, Oliver},
|
| 242 |
+
title = {Polymarket Quant Bench: OHLCV bars for high-liquidity resolved markets},
|
| 243 |
year = {2026},
|
| 244 |
+
howpublished = {HuggingFace dataset, smf-ulm/polymarket-quant-bench},
|
| 245 |
note = {Derived from Jon Becker's polymarket-data release at
|
| 246 |
\url{https://github.com/jbecker19/polymarket-data}}
|
| 247 |
}
|
polymarket/bars_daily/bars_0_10000.parquet
ADDED
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