MCL historical data: 1-minute to daily bars, 2021 to 2026

MCL is the Micro WTI crude oil futures; it tracks West Texas Intermediate crude oil at one-tenth of the CL contract size. MarketParquet holds MCL as a futures contract with 1-minute, 5-minute, 30-minute, 1-hour and daily OHLCV bars from 2021-07-12 to 2026-09-11 (1,248 daily bars), continuous contract, ratio-adjusted at each roll, as one Parquet file per trading day.

MCL is the micro-sized crude contract for executing CL strategies with smaller position sizes.

MCL at a glance

Sample: MCL 30-minute bars on 2026-09-16

The first regular-session bars from the newest 30-minute file, read live from the archive. Prices are the values as published; the full session has many more rows.

Open the full 2026-09-16 preview for MCL

Corporate actions in the changelog

MCL is a continuous contract: each roll is ratio-adjusted so the series has no artificial gaps between expiries. There are no splits to record; the continuous futures page explains the roll method.

Load MCL in Python

Files are partitioned by trading day, so pulling one symbol means filtering across files. DuckDB reads the whole daily history in one statement; union_by_name and the COALESCE cover the older daily files, which carry a timestamp column where newer ones carry date:

  import duckdb

  mcl = duckdb.sql("""
      SELECT COALESCE(date, CAST(timestamp AS DATE)) AS date,
             open, high, low, close, volume
      FROM read_parquet('by_date/futures_daily/*/*.parquet', union_by_name=true)
      WHERE symbol = 'MCL'
      ORDER BY 1
  """).df()

Intraday files all share one schema, so Polars can scan a year of 5-minute bars lazily and keep only MCL:

  import polars as pl

  bars = (
      pl.scan_parquet("by_date/futures_5min/2025/*.parquet")
        .filter(pl.col("symbol") == "MCL")
        .select(["timestamp", "open", "high", "low", "close", "volume"])
        .sort("timestamp")
        .collect()
  )

Timestamps are US/Eastern bar open times. The Polars guide, the DuckDB guide and the backtrader guide take it from here: multi-year loads, resampling and feeding a backtest engine.

Available Futures files

Every file holds all Futures symbols for that day, MCL included.

Get MCL data

Free: a free account can download roughly the last year of daily Futures files, which include MCL, from the daily browse page or by API key. Complete Archive: every timeframe and the full history back to 2021-07-12 for MCL and every other symbol, $79 one-time.

FAQ

Is MCL history split-adjusted?

Futures do not split. MCL is a continuous, ratio-adjusted series, so returns are correct across contract rolls.

How far back does MCL go?

The first MCL bar in the archive is dated 2021-07-12 and the newest is 2026-09-11. New sessions are added the same night, typically by midnight ET.

What timezone are the intraday bars in?

US/Eastern. Regular hours are 9:30 AM to 4:00 PM ET; 1-minute files also carry pre-market from 4:00 AM and after-hours to 8:00 PM where trades occurred.

Can I download only MCL?

Files are per day, not per symbol, so you download the daily or intraday files for the dates you need and filter on symbol == "MCL". A year of daily files is small; the snippets above do the filtering in one pass.

Related

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