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Depends on your order type. In "market orders" no, then you're fcked, it could be whatever.
Ah, yes. Makes sense for market orders. I was thinking about limit orders
In real limit-orders you buy for that price or cheaper. In bullshit brokerages the limit-orders are fake since they only trigger at a certain prices but then place market orders.
Ah right, I didn't think about sells below my price for limit buys.
Fake limit-orders would be easy to tell if my buy limit order (for example) ever executes at a price which is not the same or lower as the price I put in, no?
If you place limit-order buy above current price, it fills all sells one after the other until the price has risen up to your order, then it stops filling.
Yes, makes sense. But in which order are the orders considered? Based on when they were created? First come, first serve?