Market Making: Providing Liquidity for Profit

Market makers post both bid and ask. Profit comes from buying lower and selling higher net of fees—when flow is balanced and inventory risk stays small.

Crypto and equities differ in hours, credit, and regulation, but the economic core is the same: continuous two-sided liquidity has a cost (capital, adverse selection, technology).

If buys fill faster than sells, inventory piles up. Skew shifts quotes to encourage flow that reduces the imbalance. Hedging with correlated instruments converts directional risk into basis risk.

Informed flow buys before good news or sells before bad news. Makers lose when their resting liquidity is picked off. Wider spreads, smaller size, faster cancels, and toxicity models are standard responses—none removes the trade-off.

Designated roles on some lit venues come with quoting rules and privileges. Proprietary desks choose when to quote. Crisis episodes show both models can withdraw when risk limits trip—liquidity is not guaranteed.

24/7 markets, fragmented venues, and exchange credit risk change operations. Collapse events demonstrated that posting liquidity on an exchange is also a counterparty bet on that exchange.

On-chain books reduce some custody risks; you still face smart-contract and bridge risks depending on architecture.

Exchanges often charge takers more than makers to reward displayed liquidity. Retail traders can sometimes save fees with passive limits—if fills are acceptable and time risk is priced.