Quote:
Originally Posted by blankall
Quick question for someone who knows more about this than me. Is stock price the last sale? Some grouping of the most recent sales? Surely it would take more than one sale, as that would just lead to manipulation.
How do they actually determine the instantaneous price of a stock?
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It's the last price traded on the open market. It could be a million shares or it could be a handful. You can't really manipulate it because if you put in a high buy order to drive the price upwards, there will be tons of sell orders that get activated and the actual transaction price will only move up a bit.