Bid / Ask Spread

The bid/ask spread is the difference between the highest price a buyer is willing to pay and the lowest price a seller is willing to accept. In oil and refined product markets, it is a key indicator of liquidity, trading conditions, and transaction costs. Tight spreads in actively traded contracts like front-month Brent or WTI futures usually mean deep liquidity and low implicit cost for entering and exiting positions, which is attractive for hedging and short-term trading. Wider spreads typically appear in less liquid grades, far-forward contracts, or during periods of stress, uncertainty, or very high volatility. For traders, the spread influences order choice: a wide spread makes passive limit orders more appealing, while tight spreads favour aggressive market orders. The bid/ask spread also reflects the risk and inventory cost carried by market makers. When spreads suddenly widen, it can signal that liquidity is withdrawing or that participants are uncertain about fair value. Monitoring bid/ask behaviour helps traders manage execution risk, gauge market health, and understand when conditions are becoming more fragile.