M1 Blog

Why M1 Uses Trade Windows

M1 Team
M1 Team October 8, 2025

New clients often wonder why M1 uses trade windows. M1’s trade windows are an intentional and core design choice to support long-term, automated, and diversified investing. Grouping orders into two daily scheduled windows (AM and PM) enables investing at scale, automated rebalancing, and consistent portfolio maintenance—so you can focus on your plan, not the tape. If you want a disciplined way to build wealth over time, trading windows help to serve that purpose.


Trade windows by (long-term) design


M1 was built for investors who want to automate good habits—regular contributions, diversification through pies, and staying aligned to a target allocation—rather than react to minute-to-minute market moves. M1’s trading windows are central to that approach.


Trade windows and Pies work hand-in-hand. Your Pie sets target weights for each slice. When cash arrives or dividends are ready to reinvest, funds are directed toward underweight slices and trims from overweight ones when you rebalance. Executing these instructions in scheduled trading windows allows you:

  • Reinforce discipline. A predictable cadence helps reduce the impulse to chase intraday moves and keeps attention on long-term goals.
  • Allocate precisely toward your targets across many holdings at once.
  • Keep your portfolio maintenance consistent, so contributions and rebalances happen in rhythm with your plan.

Trade windows are not a limitation bolted on after the fact; they’re an intentional, purposeful feature that supports the automated, Pie-based experience M1 clients choose.


Why M1 uses trade windows

  • Discipline over noise: Over long horizons, following a plan typically matters more than chasing intraday price moves. Trading windows can help remove the urge to micromanage and instead keep contributions and rebalancing on schedule.
  • Automation at scale: Aggregating orders allows for share execution across thousands of securities, precise allocation toward target weights, and efficient dividend reinvestment—all core to a Pie-based strategy at M1.
  • Operational consistency that supports a low-friction experience: Grouping orders helps us run a streamlined platform focused on automation and diversification. While we don’t guarantee lower costs or specific pricing outcomes, this model supports the long-term experience investors come to M1 for.
  • Purpose-built guardrails: M1 is not intended for day trading or intraday speculation. Trading windows reinforce that focus and keep attention on long-term objectives.

Tips to get the most from trade windows

  • Let your Pie work: Use pies and rebalancing to keep your portfolio aligned to your plan. Rebalance instructions are executed in the window, subject to availability and settings.
  • Turn on auto-invest and schedule transfers: Recurring deposits plus auto-invest can help keep your plan on track so funds are ready for the next window when eligible.
  • Mind cutoff times: Place deposits and make allocation changes well ahead of posted cutoffs for the next window.
  • Avoid last-minute edits: Repeated changes near a cutoff can push activity to a subsequent window.
  • Expect normal market variability: The execution price is determined when your order fills; prices can change between placement and execution.

If you’re looking to automate contributions, reinvest dividends, and maintain diversified target allocations over years, windows can be a feature you appreciate. With trading windows, our aim is to provide a streamlined, long-term investing experience that helps you stay the course.


To learn more about how trade windows work visit our Help Center article.


SAIF-10082025-xygx8rxk