because of all the other alts it's issuing.
nxt was crippled by the style of its launch for a long time. all of the coins went to 70 people. no one else wanted to touch it because of that distribution.
to be fair it was one of the very first ico type of deals and most people were extremely skeptical so didn't take part.
On their 1st (or one) token ICO, they repeated this...I think one person bought all of it. There was an outrage but nothing happened. I dumped my NXT at that point and vowed to never touch NXT and it's tokens again. Maybe it is my loss but can't take it by principle.
I believe it is highly manipulated.