What if all investors place only market orders?

If I understand it correctly, the way to cause price changes in a stock is by matching buyers and sellers who quoted the same price.

But If all investors would place only market orders the price of a stock will basically remain constant as the stock changes hands, correct?

3 Comments
 

The way a stock price changes is if someone lifts an offer or hits a bid. 
 

Gross over-simplification: Assume the last trade was 50.46 and the market is 50.45 at 50.47 now. If you want to buy, you’re paying 50.47 and the price ticks higher. And the bc market bid/ask may go to 50.46 @ 50.48. You want to buy more, you’re now paying 50.48 and the stock ticked up again. 

 
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