Guys if you don't understand supply and demand zones its one of the basic aspects of trading and more important than learning chart patterns in my opinion.
Have a look at this chart and you can see how significant a supply or demand zone can be for trading: and why im long on ZRX again.
Also note how we had a full daily stoch reset recently also.
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This was just a educational post ZRX didn't hold the demand zone it turned into a supply zone.
Now watch and see the supply zone act as resistance.