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Bracket order

Open a position and attach a reduce-only stop loss in one command. The stop modifier on buy / sell bolts the stop on after the entry fires, no second command needed. Use this when you want the stop locked in atomically rather than chasing a separate stop call after the fill.

Minimum viable​

buy $100 stop -1%

Market buy $100 notional on the focused symbol. A reduce-only market stop is placed 1% below the fill price as soon as the entry resolves.

Variations​

buy $100 at 50000 stop 49500

Limit entry + absolute stop price. Stop attaches after the limit reports a fill.

buy $100 at $bid +0.1% stop -1%

Post-only-ish entry pegged just above the bid, percent-offset stop relative to the fill.

buy $100 at 50000 po stop -1%

Explicit post-only entry (rejected if it would cross), same percent stop.

buy 50%bal stop $entry -2%

Size by 50% of free balance; stop anchored to $entry (current position's entry price), not to the new fill. Useful when you're adding to an existing position and want the stop on the average entry.

sell $100 stop +1%

Short entry with stop 1% above the fill. The stop side flips automatically.

buy $100 stop -1% trigger -0.9%

Limit stop — the order rests at -1% but only activates when mark crosses -0.9%. See stop for the trigger grammar.

Gotchas​

  • The bracket stop is always reduce-only — it can't accidentally flip your position. This is by design and not configurable.
  • stop -1% is relative to the fill price, not to the limit price you set. If you want the stop pinned to a known number, use stop $entry -1% (after the position exists) or pass an absolute (stop 49500).
  • Bare numbers ≥ 100 with no stop keyword and no at are rejected — the parser asks "did you mean at <price>?" so a typo can't coerce a market order. See Safety → fatfinger for the per-order check that fires on top of this.
  • If the entry never fills (post-only that crosses, limit too far away), no stop is created. Pair with wait fill if you want to react to a timeout.
  • The stop sits in the exchange's stop book — closing the position manually doesn't cancel it. Run cancel stops or nuke to clean up.