为什么流动性深度比交易量更重要

Depth figures are compiled from each venue's primary USDT pair over a 14-day window from 25 August to 7 September 2026. Seven venues are tracked across spot and perpetual markets: Gate, Binance, OKX, Bybit, KuCoin, HTX and Hyperliquid.

This article is brought to you by Gate. Depth is dynamic, and these conclusions apply to this window only.

Why Is Order Book Depth Important?

When comparing crypto exchanges, most traders instinctively reach for the same number: 24-hour trading volume. It feels like the right proxy, because a busy exchange must be a good one. But volume tells you how much has already been traded, not how well your trade will actually execute. Two exchanges can show identical volume figures while delivering very different experiences the moment you place an order.

The metric that actually shapes your execution quality is order book depth, and the difference between exchanges can be substantial depending on the asset you're trading.

What Is Order Book Depth?

Every centralized exchange runs on an order book: a live list of open buy orders (bids) and sell orders (asks), organized by price. When you place a market order, the exchange fills it by matching against the best available orders on the other side.

Order book depth refers to the total volume of orders sitting within a certain price range of the current market price. Depending on the size of the orders, two depth thresholds may be commonly used to assess liquidity:

Top-of-Book (L1) Depth : the single best bid and single best ask — the most granular measure of quoted liquidity. It reflects the price and size available at the very top of the order book, and is most relevant for understanding how competitive an exchange's quoted prices are and how cleanly the smallest orders will execute. Figures are calculated as averages of snapshots taken at regular intervals over the observation period.

1% depth: cumulative bid size within 1% below the mid price and cumulative ask size within 1% above it, again averaged across the two sides. In calm markets this tier is rarely touched. It matters at the extremes — when a large order is worked in a single clip, or when a one-sided move wicks through the book.

How Exchanges Compare on Spot Depth

Using order book data collected by Gate over 25 August to 7 September 2026, we can compare how seven venues stack up at both the top-of-book (L1) and 1% tiers. Spot coverage is BTC, ETH, XRP, SOL and DOGE, each on the venue's primary USDT pair.

The Big Picture

The two charts below show depth share across the 30 highest-volume spot pairs, at L1 and at 1%. They tell two different stories.

Figure 1 — Spot top 30 pairs, top-of-book (L1) depth share, single-day snapshot, 7 September 2026

At L1, OKX leads on 16 of the 30 pairs, Gate on 7, Binance on 6 and Bybit on 1. OKX's advantage sits in mid-caps . Gate's seven wins cluster at the top of the volume table: BTC (27.3%), ETH (37.5%), XRP (39.2%), BNB (40.4%), DOGE (35.6%), NEAR(42.19%), and USD1(38.07%).

Figure 2 — Spot top 30 pairs, 1% depth share, single-day snapshot, 7 September 2026

At 1%, the ranking inverts. Gate leads on 15 of 30, Binance on 10, Bybit on 4 and OKX on just 1. And more telling than the wins is the spread: Gate places first or second on 28 of the 30 pairs, the widest coverage of any venue here, while Binance's ten wins are almost entirely the largest names.

Three venues, three market-making strategies. OKX buys the touch in mid-caps. Binance buys depth-of-book on the majors. Gate covers both: the best quoted price on the highest-volume pairs, and the broadest 1% coverage across the rest of the top 30. None is better in the abstract; what matters is whether it suits the order you are about to place.

Bitcoin (BTC)

Figure 3 — Spot BTC, 1% depth in USD, 25 Aug – 7 Sep 2026

At the tighter 1% depth band. Binance led on all 14 days with a median of $20.01M against Gate at $12.74M (0.64x), OKX at $11.60M and Bybit at $11.21M. For anyone working several million dollars of BTC in one order, that difference is real.

But that is the tier almost no retail order ever reaches. At the level where the great majority of BTC trades are actually filled, the ranking flips.

Figure 4 — Spot BTC, top-of-book (L1) depth in USD, 25 Aug – 7 Sep 2026

Gate led L1 on 12 of the 14 days with a median of $236.8K, 1.36x second-placed Binance at $174.0K and slightly further ahead of OKX at $171.2K, with the rest of the field well back.

If you are trading BTC in size, check Binance's cushion; if you are trading BTC the way most people do, in clips well under six figures, Gate quoted the best price on the majority of days in this window.

Ethereum (ETH)

Figure 5 — Spot ETH, 1% depth in USD, 25 Aug – 7 Sep 2026

At 1% the lead returns to Binance at $8.07M, with 11 of 14 days in front. Gate places third at $6.75M, or 0.84x Binance.The four venues behind Binance sit within roughly 35% of each other, which is unusually tight for a pair this size.

Figure 6 — Spot ETH, top-of-book (L1) depth in USD, 25 Aug – 7 Sep 2026

At L1 this is Gate's most consistent spot result: first on all 14 days, median $117.2K against OKX at $78.1K and Binance at $71.7K — a 1.50x margin never surrendered at any point in the window.

The Other Spot

XRP and DOGE repeat the pattern set by BTC and ETH. At the touch Gate led both — XRP on 12 of 14 days with a median of $19.3K, 1.54x Binance at $12.5K, and DOGE on 12 of 14 days at $9,721, again 1.54x Binance at $6,306.

Through the book the two diverge. On XRP, Binance finished narrowly ahead, $1.97M to Gate's $1.82M, a gap of only 8%. On DOGE, Gate led at 1% on all 14 days with a median of $1.55M against a tightly bunched Bybit ($1.24M), Binance ($1.14M) and OKX ($1.13M) — the only spot pair in the set led by the same venue at both tiers, and the only one where Binance failed to place in the top two. SOL runs the other way: OKX led at the touch, 1.75x Gate, and Binance through the book, making it the one spot major where Gate tops neither tier.

Across the spot top 30 as a whole, Gate's broadest strength sits at the 1% tier in mid-caps: LINK (36.4% depth share), ARB (34.2%), UNI (33.7%), AVAX (33.4%) and NEAR (32.4%). Combined with its seven L1 wins at the top of the volume table, that is the spot profile in one line — competitive at the touch where the flow is, and the widest coverage through the book everywhere else.

Does the Pattern Hold in Perps Markets?

USDT-margined perpetuals are where depth arguably matters most. Leverage amplifies slippage, and a thin perpetual book means worse liquidation prices and larger realised losses in fast markets. Perpetual flow also turns over far faster than spot, and it is worked in smaller, more frequent clips — which makes the size resting at the best bid and offer, rather than the cushion further out, the tier that decides most fills. This section is therefore measured at Top-of-Book (L1) Depth throughout.

Alongside BTC, ETH and SOL, this section covers three tokenized RWA instruments — XAU (gold), CL (crude oil) and SKHYNIX (SK Hynix). These have mature reference markets off-chain, their market-making logic differs substantially from pure crypto, and the results bear that out.

The Big Picture

Figure 7 — Perpetuals top 30 pairs, top-of-book (L1) depth share, single-day snapshot, 7 September 2026