how do stock traders know someone will buy their stock/sell stock at a price they want?

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Like if I try to sell an old couch on marketplace, there’s no guarantee someone will buy it. This is the first part of my question, what if no one wants the stock they’re selling? Can they just sell it to the ‘stockmarket’ or do they actually have to find a buyer like a specific bank or person that will buy it?

Then when I sell a couch, I can pick the price I want to sell it for, and maybe go back and forth with the buyer. As I understand though stocks have a specific price every moment, and you sell it for whatever the current price is. What if it’s an in demand stock though? Couldn’t you sell it for above whatever the current market price is?

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Anonymous 0 Comments

The primary difference in your analogy is that the stock market is generally very very liquid. There’s many players that “make a market”, meaning provide both offers to buy and offers to sell, with a relatively narrow spread (ie the difference between what they are willing to sell for and what they are willing to buy for is on the order of a penny). Additionally, many players that will do a lot of work to figure out what the “right price” is, and will make bets until the market reflects that price (ie if the current buy/sell is around 100$, but players believe it should be 101$, they will quickly trade until the buy/sell becomes 101$).

These mechanics mean that traders have a relatively easy time getting trades through. For example if I wanted to buy immediately and I see the market price is fair, I can just pay 101.01$ per share and get immediate trades. That trade indeed happens publicly, on the “stock market” (actually stock exchange); but you are usually trading with at least one real entity on the other side (ie someone has agreed ahead of time to sell you for 101.01$). The purpose of the stock exchange is to aggregate and match up these various players with different ideas, business goals, and urgencies around their trades.

To your second question – if a stock is particularly in demand, this will reflect in two ways: many more offers to buy than offers to sell; and immediate execution of orders that offer higher than mid price, thus pushing mid price up. Either way, the market absorbs the belief or idea that the stock is “in demand” or “underpriced”. So unless you are particularly fast on the draw, you won’t be able to profit from holding this view.

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