General
ioc
What does ioc mean?
Order condition allowing partial fills, but only on the spot. Whatever can execute immediately does; anything that can't is cancelled rather than resting on the book. Algos lean on IOCs for sweeping liquidity across venues without leaving footprints.
"The smart router fires IOCs at every venue and just cleans up whatever's there."
Frequently asked questions
What does IOC mean in trading?
It stands for "immediate-or-cancel" — an order that fills whatever it can right now and cancels the rest.
How do you use IOC in a sentence?
"Send it as an IOC so we don't leave a resting order hanging in the book."
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