A few basic questions in mind
In this and the following question, the assumption is that stock trading takes place.
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What happens if you place a buy order for a stock with a broker, but you don’t have enough money to pay for it immediately? What if not even after a couple of business days?
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What if you sell a stock that you don’t have enough of, or not even after a couple of days?
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Is there any prevention for decimal errors, i.e., the stock price accidentally *10, too many zeros in the quantity, etc.?
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Nordnet has a 10-share transaction limit within the same buy order for stock trading, after which a new brokerage fee is charged. Is this the same for all brokers?
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Is there any opportunity to practice? For me, buying with a stop-loss limit was somehow difficult to grasp - I’m still not sure if I deduced correctly (i.e., the stock price goes below the limit price, a buy order is triggered at a self-determined price, which can be even lower than the limit price). I haven’t even tried to familiarize myself with derivatives yet

Other
- Recently, Bitcoin was sold at a bargain price due to a trading platform’s (error), which froze the accounts of those who profited from the situation and threatens legal action if the money is not returned. Have such cases been common?