Round numbers are important psychological level. do you use round number information to help you trade?
I trade all numbers. Buy when it stays above 50 SMA for 20 days or more and sell when it reaches price target or break trend line.
The NQ regularly blows right through BRN, so no, I pay it no mind. No longer, after I used to believe in that sort of thing.
I move targets if they are little beyond them in case bumps right on the double zero's and reversal but reversing just cause they double zero never have tested well for me. It would be better if other reasons existed like a spike in price depending on steep slope, Price Per Second, volume per second. NQ's are more wild than ES, also NQ usually has more daily volume traded than open interest, where ES often has volume 50% or less than open interest. So NQ's more of day trading entity and I believe less used in hedging than ES.
I stay away from round numbers. I enter just prior to them to beat out the demand of the retail traders when trying to get in and sell just prior to them to beat the retail traders trying to get out.