# Why Volume Is Not Liquidity

URL: https://www.caijing188.com/volume-is-not-liquidity/
Published: 2026-10-27T20:56:39+08:00 | Updated: 2026-10-27T20:56:39+08:00
Verified: 2026-10-27

## Quick answer
Volume records trades that already happened. Liquidity is the standing offer of size at a price, and the two diverge whenever activity is incentivised or concentrated.

## Summary
Turnover measures flow and liquidity measures the cost of exiting now. Confusing them makes a market look safe exactly when the book behind it is thin.

## FAQ
Q: Can a market have high volume and no liquidity?
A: Yes. Volume records trades that already happened, and it can be generated by incentive programmes, rebates or automated strategies that leave no resting size behind. The book can be nearly empty while the volume column looks healthy.
Q: Can a market have liquidity and low volume?
A: Yes, up to a point. A pair with patient makers quoting size can absorb modest orders cheaply despite few trades. The limit is that low volume often means few counterparties, so a large order still moves the price and a sudden exit has fewer buyers.
Q: Is volume a useful filter at all?
A: A useful first filter for whether a market is alive, and a poor second filter for whether it is deep. Use it to exclude dead pairs, then judge the survivors on depth and spread.
Q: Why does slippage rise faster than order size?
A: Because depth is not uniform. Size clusters near the touch and thins as you move away, so each extra unit fills at a worse price than the last, and the average cost grows faster than the order does.
Q: How do I judge liquidity on a venue I have never used?
A: Place a small limit order and watch whether it fills and whether the book stays stable around it. Quoted depth is a claim; a completed small trade is evidence someone will transact.
Q: Does aggregated volume across venues fix the problem?
A: Only if you can route to every venue in the aggregate. Otherwise it describes liquidity you cannot reach, and your real market is the one book you can trade against.