🤔 이상한 가격에 체결되면 주가가 튈 수도 있나요?

A lot of confusion here.

First of all, when you send a stop order to your broker, if you’re working with a honest regulated broker, they will not send it to the market. It just stays with them until the price touches it, and only then they execute it (how exactly depends on the broker).

So you should never be in a situation where you go short at 100, put a stop at 500, and someone says “fucking great, I absolutely want to sell at 500, let’s sell to this idiot”. Nobody sees that 500 stop other than your broker.

Second, your research isn’t that good.

> a stocks price is just the last successful trade.

Nope. That’s the __last__ price. The concept of “price” by itself without any qualifier is meaningless, because there are different notions of “price”.

There is the bid price, the highest price at which the market is willing to buy. The ask price, the lowest price at which the market is willing to sell. The mid price, the midpoint between the bid and the ask price. The last price, the price at which the last trade (likely with some filters, I don’t think that that all trades should contribute to the last price, as some of them are knowingly off-market for various reasons, but I am not entirely sure how it works in equities as I never traded equities) cleared. And whatever other notion of price you can come up with.