The order book looks intimidating at first: two columns of flickering numbers in red and green. But it answers a question no chart can: who wants to buy, who wants to sell, at what price, and in what size, right now. Ten minutes with this guide and it will start making sense.
What the order book shows
The order book is the live list of all resting limit orders in a market:
- Asks, shown in red at the top, are sell orders. These are traders offering to sell at each price. The lowest ask is the cheapest price you can buy immediately.
- Bids, shown in green at the bottom, are buy orders. The highest bid is the best price you can sell into immediately.
Each row has three columns: Price, Size at that price, and Total, which is the running sum of size from the middle outwards. Total tells you how much you could buy or sell before pushing the price past that level.
The spread
Between the best ask and the best bid sits the spread, displayed in its own row in the middle of the book. The spread is the cost of immediacy: buy at the ask, sell at the bid, and you have paid the spread without the price moving at all.
Tight spreads mean an actively traded, liquid market. Wide spreads mean fewer participants, and they make frequent in-and-out trading expensive. Major markets on Hyperbeat Trade typically have very tight spreads; smaller markets deserve a look at the book before you size up.
Depth: how much can this market absorb?
Depth is the total size resting near the current price. A deep book absorbs large orders with little price movement. A shallow book means even modest market orders will walk through several price levels, filling at progressively worse prices.
This is exactly what slippage is. When you enter a market order in the order form, Hyperbeat estimates your slippage by walking your order through the live book. If you see a high estimate, the book is telling you your order is large relative to available liquidity. Options: reduce size, use a limit order, or use a TWAP order to spread execution over time.
Makers and takers
Every trade has two sides with different roles:
- A maker places a resting order that waits in the book, providing liquidity.
- A taker places an order that executes immediately against resting orders, consuming liquidity.
Exchanges want deep books, so maker fees are lower than taker fees. On Hyperbeat Trade your two rates are shown in the order form. If you want to guarantee maker treatment, use a limit order with ALO (Add Liquidity Only) time-in-force: it will only go through if it rests in the book.
Practical ways to use the book
- Place smarter limit orders. Instead of guessing entry prices, look at where liquidity actually sits. The Mid button starts you at the midpoint, then adjust.
- Gauge your true cost to exit. Before entering a position, check the Total column for the size you would need to close. In a thin market, getting out can cost more than getting in.
- Adjust the view. The aggregation selector groups price levels into coarser buckets, useful for seeing the bigger structure. You can also toggle sizes between the asset and USDC, whichever you think in.
- Click to fill. Clicking a price in the book loads it into the order form, a small shortcut that saves typos.
A word of caution about reading intent
Traders sometimes try to read direction from the book, treating big bids as support or big asks as resistance. Be careful: resting orders can be canceled in an instant, and large players know everyone is watching. Treat the book as a measure of liquidity and cost, not as a crystal ball.
Keep learning
Nothing in this article is financial advice.
