Advantage/disadvantage of using a Fok order?

Haven't used one of these yet and would like some input on it before I go setting it up and it ends up costing me money. I mostly daytrade the small-medium caps.

 

Fok no

 

https://www.investopedia.com/terms/f/fok.asp

 

I assume ur just joking.

 

Sourcing dark liquidity in options - otherwise mostly cons.

 

What happens if you try to add liquidity? Since it doesn't fill right away does it get cancelled immediately?

 

Trying to add liquidity on a maker/taker exchange environment? No, your order wouldn't cancel if not filled immediately, but there are a ton of other things to consider.
Would a FOK cancel if not filled immediately - yes.

 

This just took me out.

 

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Dont need it;
with liquid stocks/ ETFs. Besides, specialists/market makers get paid on volume.IF one got in real late, may get a partial fill but thats too late..................................................

 

What do you mean by that? FOK orders get routed to OTC? Limit orders don't? I presumed only OTC Products like CFDs get filled in OTC.