So in addition to the New York Open, there is another tournament, the Big Apple Open Jiu Jitsu tournament.
Taking place on May 18th, they have an early bird registration fee now- $90, until March 23rd. It’s taking place at Martin Luther King High School in Manhattan.
I took a look at the results: it looks like a small tournament at the moment, but who knows, it was just promoted by Graciemag, so there’s a chance with the additional publicity it will have more competitors.
Check it out if you are interested: Big Apple BJJ Open Tournament