It is all strictly algo's only.
Honestly, I have been offered access to internals (dark pools) before by another reputed broker but it is not worth when you are trading through the API.
Plus the money to be made is not from buying low , selling high but on the weakness of a certain stock.
Algo's help you trade in bulk on short weaknesses. Dark pools can aid on a single trade large deficit difference to make big bucks.
