I trade day in and day out only in odd lots!!!
I average in most of the time & sell out the same way.
I trade 50/60/70shares or even 150/250 shares
in LEH,MER,SPY,QLD,SSO,UWM,TWM,UNG,BNI... etc.
Occasionaly when I trade RTH (Retail holder's Spider) or Transport Holder Spider ( I can't...