From Citadel Securities to Tastyworks: The New Economics of Liquidity, Part 1

"The real voyage of discovery consists, not in seeking new landscapes, but in having new eyes." - Marcel Proust   The data contained in the revised SEC Rule 606 reporting has landed like a transparency bomb for those few of us who try to make sense of complex - and historically opaque - market structure issues; perhaps even more so for those fewer of us that are able to triangulate on the strategic movements of the various players by weaving additional insight from multiple datasets. Add the moves of the largest retail brokerage platforms, in particular, to a zero-commission paradigm off the back of the controversially-successful Robinhood platform, and we have a potent cocktail made of disruption and intrigue. For those of you that have been following along recently, Alphacution has toggled widely between intense fixation on these themes - with our latest Robinhood-related Feed posts, "Phenomenon: On This Score, Robinhood Now Exceeds E*Trade, Others" and "Trick Shot: Robinhood Underwrites MEMX" and our recent contributions to the July 8 New York Times [...]