How much of your money is liquid to trade?
About four years ago another poster asked me that question and I answered it. The result was several posters called me a liar and several posters accused me of bragging or trying to show off a 'big dick'.....blah, blah, blah.
So, I won't answer your question specifically in order to avoid that situation again. Sorry.
But I will say my minimum trade is 1,000 shares except if I'm trading AAPL, GOOG or BRK-A, for which my minimum is considerably
I consider about 2/5 of my total broker portfolio as my trading book and the other 3/5 is off limits for frequent trading.