I would call Bloomberg a financial news company. It's a great company. But I am sympathetic to the view of calling it a tech company because the Bloomberg terminal is an important piece of tech.
Forgetting for a moment whether it is tech or not, is Bloomberg the biggest company founded in New York (in any area) over the last 30 years? My guess would be yes.
With over 75% of their revenue reported to be software revenue (https://talkingbiznews.com/1/report-bloombergs-revenue-hit-1...), I'd call them a tech company. The public perception is focused on the news aspect because that's the most accessible part of their business.
I don't have any other examples at or above their size.
Forgetting for a moment whether it is tech or not, is Bloomberg the biggest company founded in New York (in any area) over the last 30 years? My guess would be yes.