Stock market and mistakes?

A few basic questions in mind

In this and the following question, the assumption is that stock trading takes place.

  • 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?

  • What if you sell a stock that you don’t have enough of, or not even after a couple of days?

  • Is there any prevention for decimal errors, i.e., the stock price accidentally *10, too many zeros in the quantity, etc.?

  • 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?

  • 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 :slight_smile:

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?

There’s already a question thread ready for these here:

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