I will add some information to discuss a question.
796.com (Hong Kong based exchange, BTC and LTC futures).
When LTC price was very volatile, there were stuck orders due to inappropriate price limits of system.
10 July - 11 July night before settlement.
796 guys didn't cancel "stuck" large orders (several thousand LTC bids $4.5-5.5 when LTC price was $3.7-4).
As soon as they have changed price limits (without any notification) after several hours of waiting these bid orders were instantly (less than in 1 second) executed completely.
Only 796 admins could know exactly when to sell to these stuck orders. Why didn't they cancel them BEFORE changing limits?
People have lost a lot of money due to that, to say nothing of "socialized" or expropriated 73.97% of week profit of all their customers.
https://796.com/ltcFutures/settle?lang=en here you can see that 796 guys have "socialized" or maybe "expropriated" 73.97% of profit of their users on July 11 and ~45.1% on July 4.
I've shorted LTC futures when price was ~$6 to hedge my LTC holdings on another exchange. My net profit was ~550 LTC.
I have seen this profit on my account balance but it has disappeared soon.
when I've contacted support, they told me they have "socialized" 73.97% of profit of their users because LTC price moved violent last week.
Should the platforms take the responsibility?