Quote from RedManPlus:
An ATS trading futures on 2-5% margin...
Should never be left unattended.
An ATS trading low volatility "bond like" securities...
On 50% margin...
Cannot do much damage...
And any mistake is 50-50 in your favor.
That said...
An ATS should have it's own account...
With no more than 10% of your capital or so.
Of course...
You can have multiple ATS trading multiple accounts.
Building a robust ATS is not rocket science...
But regardless of public perceptions created by the securities industry...
It's not for hobbyists...
And neither is trading.
rm+