What size do prop traders and investment banks trading desks trade? Just interested because there must be a maximum amount before you start to move the market with a giant order sitting on the order flow. I know they use algos to split these up but in theory in one trade on a large cap, what's the maximum you could do without affecting too much.
%% Under the legal limit. And in some cases, like Bear Stearns, under the legal limit but bleW up anyway, including but not limited to their hedge funds....................................................................................
What market? What time of day? You're right with your intuition that they would want to know how much of an order size would move the market, and may not *wish* to move the market without recognizing (the) cost in doing so, but then too, sometimes you might have to pay some vig in a "flush" scenario, just to avoid the tsunami coming in the next hour(day)(week)(quarter)...
%% 10,000 is pretty much considered a block trade; but for small caps or even stuff with semi liquid volume, it Varies.7,000 seems like some is trying to avoid the 10k footprint??
%% NOT in most stocks or ETfs. I meant on some smaller caps or some stocks say trading under 1 million shares per day;10,000 shares is real convenient math. But could be 7,000 shares , especially a series of 7,000 shares looks a lot less bullish, but still gets the Volume. In other words ,$ 100 bills can be convenient sometimes, but i seldom carry many around+ some dont want to change them them.....................................................................................[And since i mentioned 7k shares on a site of 100,000 traders, 7 k may not mean much NEXT 50 DAYS LOL]