On Monday, Nas100 dropped under 15500 horizontal support. However, this break lacked continuation and has proved to be a false break, with the index quickly and strongly reversing.
At this moment the price is just under a short-term resistance and a break here would expose the old ATH zone resistance.
Also, considering the strong reversal after the false break we can expect a new ATH in the near future and 17500 can be the bulls target