I understand how supply and demand works but I’m confused as to who actually is in charge of setting the price to display to all trading platforms. Since the stock price is constant across all trading platforms, what algorithm or system is in place to ensure there are no clashes or discrepancies between said platforms? Is there one dominating platform that monitors all stock prices which other platforms refer to such as the NYSE?
In: 11
You have 10 apples.
Bob has 10 apples.
Bob sells his apples to me for $1 each.
Apples are worth $1 each.
You try selling them for $2 each and I buy them
Apples are worth $2 each
I sell the 20 apples I have for $5 each
Apples are worth $5 each.
Stock prices are literally supply and demand and based on how many and who is buying for what price.
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