Core time-in-force choices
A GTC limit order rests until it fills or is cancelled. ALO is post-only: it is rejected or adjusted rather than immediately taking liquidity. IOC executes what it can immediately and cancels the remainder.
A market order expresses urgency, not a guaranteed price. Its realized slippage depends on depth and volatility. The maker/taker fee is only one component of that choice.
| Instruction | Primary intent | Main trade-off |
|---|---|---|
| GTC limit | Rest at a chosen price | May not fill |
| ALO / post-only | Guarantee maker behavior | Can be rejected or miss |
| IOC | Fill now up to a limit | Remainder cancels |
| Market | Prioritize execution | Price can move through depth |
Chase orders reprice in the browser
A Chase order is an ALO limit order that automatically reprices toward the best bid or ask until it fills or stops. It remains post-only and normally rests one tick inside a multi-tick spread, or at the best bid or ask when the spread is one tick.
The automation runs in the browser tab that created it, and the official interface currently allows up to five active Chase orders. Closing the tab or losing connectivity changes the operational risk, so monitor the order rather than treating it as server-side certainty.
Stops and take-profits
Stop-market and take-market orders trigger into market-style execution; stop-limit and take-limit add price control but can remain unfilled. Triggering does not guarantee the final fill price.
Mark price behavior matters because robust pricing is used for risk and trigger logic. Verify trigger basis in the current interface and use reduce-only when the instruction is meant only to close.
TWAP and scale orders
A scale order distributes multiple limits across a price range. TWAP divides execution over time; official TWAP suborders are sent every 30 seconds with a 3% maximum-slippage constraint. Missed slices can make later suborders larger, capped at three times the normal slice size.
The current interface can randomize each TWAP slice by up to ±20%, delay activation until a trigger price, and terminate at a maximum or minimum mark price. TWAP is visible onchain, can finish incomplete and is not an anonymity tool.
Choose from urgency and failure mode
Ask which failure is worse: no fill, partial fill or adverse price. That answer should drive time in force. A low maker fee is irrelevant if missing the trade violates the strategy; immediate execution is costly if the book cannot absorb the size.