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Atomic execution is the “safety net” that allows Likely traders to execute complex, multi-market strategies with zero risk of partial failure. In traditional markets, “atomic” execution doesn’t exist. You might buy an asset on one exchange intending to sell it immediately on another, only to find the second exchange has gone dark. This is called Execution Risk. On Likely, Execution Risk is eliminated.

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How It Works

Think of a Likely bundle like a database transaction. The exchange uses a sophisticated mechanism to ensure that your instructions are followed exactly.

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The Rollback

If any part of your bundle fails (e.g., a limit price is no longer available):
  • The engine looks at the Undo Log.
  • It instantly replaces any changes made during the simulation.
  • Your balances and positions are restored to the exact state they were in before the bundle was attempted.

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Why Traders Need This

Atomic execution is the foundation for advanced trading activity: Arbitrage without Fear
  • Step 1: Buy YES on Market A
  • Step 2: Sell YES on Market B
  • The Likely way: If Step 2 fails, Step 1 is undone. You still have your original capital.
Multi-Leg Market Making
  • Step 1: Cancel old quotes
  • Step 2: Split USDC into new shares
  • Step 3: Place new quotes on both sides
  • The Likely way: Protects you from being “half-live” if the system is congested.

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Failure Policies at a Glance

You decide how “atomic” your bundle should be:

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Next Steps