Any trading platform should have a stop loss....IMO.
They have a responsibility to look after their customers,
And providing stop losses is the least they can do.
Those platforms that don't:
Do not care about their customers,
Are too stupid to realise they would make more $$$$ from fees as their customers would not go broke as quickly,
If they are a Bank are too stupid to realise that they are missing out on Home and Car Loans as people lose the $$$$,
They were going to use for a deposit.
It doesn't make sense for them to mistreat customers like that.
Commsec is another example of one that doesn't listen to their customers,
And offer conventional stop losses....