Offer your thoughts or opinion on the input financial query or topic using your financial background.

How is stock price determined?
Yes, stock price is determined by the last trade price. There are always going to be people who have put in a price to buy a stock (called a bid price) and people who have put in a price to sell a stock (called an ask price). Based on your example, if the last trade price for the stock was $1.23, then you might have the following bid prices and ask prices: So if you put in a limit order to buy 100 shares at $100, you would buy the 40 shares at $1.23, the 15 shares at $1.24, and the 45 shares $1.25.  The price of the stock would go up to $1.25. Conversely, if you put in a limit order to sell 100 shares at $0.01 (I don't think any broker would allow a sell price of $0.00), you would sell 30 shares at $1.22, 20 shares at $1.21, and 50 shares at $1.20.  The price of the stock would go down to $1.20.