Not on its own. Price reflects what buyers and sellers agreed most recently, which can move on flow alone. Read it next to volume and against how the rest of the market moved over the same period.
A coin can move ten percent while nothing about it has changed. Here is what is actually happening underneath a daily move, and how to tell the kinds apart.
At a glance
- Price is set by what people will pay right now, not by what a coin is worth.
- Most daily moves come from flow rather than news: someone needs to buy or sell more than the book can absorb.
- The same news moves a small coin further than a large one, because the same money is a bigger share of it.
- A move on thin volume undoes itself more often than a move on heavy volume.
It starts in the order book
Every price you see is the last price two people agreed on. Sitting behind it is an order book: a list of what buyers are willing to pay and what sellers are willing to accept. When a buyer takes every offer at one price, the next price up becomes the market price. That is the whole mechanism.
This is why a large order can move a price on its own, with no news at all. If someone needs to buy more than is being offered near the current price, they have to reach further up the book to get filled, and the price they leave behind is higher than the one they found.
The four things behind most daily moves
Almost every one-day move is one of four things, and they behave differently enough to be worth telling apart.
| Driver | Typical size | How fast | What to check |
|---|---|---|---|
| Ordinary flow | Under 2% | All day | Volume close to its usual level |
| A large order | 2 to 5% | Minutes | A sharp move that partly retraces |
| News about the asset | 5 to 20% | Minutes to hours | Volume well above normal, and it holds |
| The whole market moving | Varies | Hours | Other coins moving the same way at once |
Why two coins react differently to the same news
Size is the reason. Moving a large coin by one percent takes far more money than moving a small one, because there is more of it to reprice. The same buying that barely registers on the largest coin can move a small one by a fifth.
That cuts both ways, and it is the single most useful thing to hold in mind when a small coin is up thirty percent in a day. It did not necessarily take much to get there, and it will not necessarily take much to give it back.
Reading a move without overreacting
Check volume before you check the percentage. A large move on volume near its usual level means few people were involved, and prices set by few people tend not to stick. The same move on several times the usual volume means real participation.
Then check whether everything else moved too. If the whole market is down four percent, a coin down five is not telling you anything about itself. If everything is flat and one coin is down twenty, that is worth understanding before acting on it.
And give it a day. The daily figure resets at a fixed hour, so a move that looks dramatic at one moment can read as ordinary against the week. The seven day change next to the daily one is usually the faster way to see which you are looking at.
Questions
Most daily moves have no news behind them. Someone needed to buy or sell more than the order book could absorb near the current price, and the price moved to find the next willing counterparty.
It is neither by itself. A large move on thin volume is fragile and frequently undone. The same move on heavy volume has more participation behind it and tends to hold longer.
Small enough that a bad week does not matter to you. A first order is for learning how the process works, and that lesson costs the same whatever the amount.