Quote from IronFist:
Proper exits is part of an edge, and your formula doesn't factor exits into the equation. Your Mfe could be a million points but if you dont have a method of exiting profitably it doesn't really matter.
BTW, 1a2b3cppp is correct: account size can be an edge. Why do you think so many people here talk about how you need a certain size account to trade? Sure, you *could* trade the ES with a $3,000 account but you'd do much better with a $100,000 account.
If you want to check if you have an edge, look if you're profitable over time. Yes = edge. That doesn't mean your edge will work forever.
It's not a formula, it's a simple rudimentary computation as a CONFIRMATION of an edge (whatever that(s) may be.
I mentioned exits because that's what one does to capitalize upon an edge. "Method" implies consistency. I would prefer consistency toward entry but an exit can be a stop out, pre-empting, or little Susie needs new braces.
Anybody can enter, no more difficult than ordering a pizza. In fact, faster. In contrast, an exit (whether positive or negative) is a taxable event. It's simply WHERE the money is made (or losses stemmed). Between entry and exit, your bias changes.
With an ownership (internal) bias, you exit as the situtation dictates. Ideally to maximize, but it's OK to leave some on the table. There's another bus coming along in 15 minutes.
After MFE has clearly, note clearly, peaked, might be time for looking for the exit. But not necessarily.
I'm not writing anything you don't already know.
Repetition breeds familiarity. Familarity breeds confidence. Quantified confirmation of edges builds confidence ( or........tells you something needs to be altered or tweeked). MFE/MAE, a tool.
I suppose an Iron fist could be a tool. In more than one context. I personally opt for brass knuckles. Less cumbersome. Streamlined. Faster. Portable. Non-metallic ones will pass through a detector.
Like Karl Malden, I never leave home without it/them.
Profitable over time is generic. A platitude. I'd rather have a smooth equity curve over one resembling a carpenter's saw blade even IF they end the same net net.
Position size is akin to two over-lapping spheres. Enough to matter but not enough to take you out of the game. A sweet spot. It too can be quantified. I personally risk no more than 1% and let it slide no more than 3 ATR's (MAE is another perspective). All irrespective of total capital. I treat each account differently.
Lots of edges. Seasonality is just one. Pssst, the Thursday before option expiration week is.......eh..........meaningful.