Are trade bust automatic ? Brokers watch client accounts for losses ?

Yesterday i buy a stock with very high bid ask spread

But some hours after, the trade show as busted (cancelled) and money back to me

I dont request broker to cancell my trade

 

Talk to your broker.

 

If it falls under the exchange's Obvious Error rule it is pretty much automatic and cannot be appealed. You might want to check the exchange's website.

 

Be careful, I've bought stock then sold. Then the purchase was busted which left me short. Doesn't seem like that's what happened to you, but it's a crappy situation anyway.

 

trade bust dont reverse all transactions from a stock ? can my account become negative ?