Quote from R. Raskolnikov:
Yep, you would. Well, depending on how large a position your "farm" is. If you all of a sudden take an out-of-character size trade that just happens to coincide with an enormous macro based move, then that's clearly suspicious and you SHOULD be investigated. The chances of it being dumb luck are so slim. People don't bet the farm in the market unless they know something and if you do it the DAY OF, that's even more obvious!
exactly.
imagine taking an out of character trade in size the day before a major event on far otm index puts...don't let the cell door hit you on the way in

im not saying it doesn't get done, im just saying a high probabilty that you will be red flagged.