When in my employ, I executed up to 2200 trades per day. My goal was to have an empty blotter the next morning, every morning. If my blotter was loaded with a dozen positions or more, I got visited by my COO.
One explain all one wants with hypothetical scenarios, but one cannot change my personal professional experience and how it provides me an opportunity to observe what may or many not be occurring on CSDT's stock.
There is no evidence of NSS here. Just speculations.