Does a Round lot order (100 shares) get better filling ?

It's NKLA... When I looked at it, it was trading 2M shares I think.

 

10k probably won't move the market. I assume you'd use a limit order.

 

No, I’ve bought 50,000 plus of NKLA off the offer and no change. NKLA has depth, 10,000 won’t dent it.

 

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IT could;
but most likely average shares per day makes a bigger difference.
My comments dont apply to penny stocks[under $5.00]