Quote from Rationalize:
Fair point - but the view I'm meaning to put here is the asymmetry of it all, good day vs bad day.
If they lost 400 million on say, 20 billion of 1 day flow, that's only about a -200bps stuff up (approx numbers).
The trouble is that a regular day is only about +1bps gained.
So the upside / downside really sucks, because the margins in this game have become so thin.
It's do a bazillion dollars of flow, to make a couple of bucks.
Fuck up just a tiny little bit, and you've blown months of P/L, or maybe the whole firm.
Bring back the teenie, create some artificial friction, then things can relax a little.
And besides, this game is a lot more fun when all you need is a phone, and some slick spreadsheets.