For large options trading, should you use RFQ (request for quote) or directly take liquidity on the order book? Many people first think of RFQ because it offers price protection, but the order book also has clear advantages. In short: the order book suits quick entry and exit for liquid, standard products; RFQ suits large, complex strategies and orders you don't want the market to see.
First, the core differences
The order book is a public market. Buyers and sellers post orders, and whoever offers the best price gets filled. Its advantages are transparency, instant execution, and being friendly to retail traders. Its disadvantage is that large orders can easily be "seen through" — as the book is swept level by level, the price gets worse and worse. That is slippage, and your order placement can be observed by the market, possibly attracting predatory trading.
RFQ is private quoting. You ask one or more liquidity providers (market makers) for a quote, and they give you a custom price for that size and strategy. You decide whether to accept it. The advantages are price lock-in, zero slippage, and complete privacy. The disadvantages are that it is slower than taking liquidity, and it is not available to everyone.
When to choose the order book
- Small order size: Bybit RFQ requires a minimum notional value of $10,000. Below that, using RFQ is not cost-effective.
- Liquid products: For example, near-term at-the-money BTC or ETH options. Order book depth is enough, and the slippage from taking liquidity is manageable.
- Fast execution needed: RFQ requires waiting for market makers to quote, while the order book is instant.
- Small test positions or high-frequency trading: RFQ is mainly for block trades and institutional clients, so it is not suitable for small trial orders.
When to choose RFQ
- Large order size: If the size is large enough to clearly affect order book depth (for example, eating through several price levels), using RFQ can avoid slippage. Binance RFQ is explicitly described as "designed for institutional-grade liquidity and block trades."
- Complex strategies (multi-leg): If you need to trade multiple legs at the same time (such as a bull call spread or a straddle), on the order book you have to build each leg one by one, and the process can be disrupted by market movements. RFQ supports requesting one quote and locking the price for the entire package. Binance RFQ and Bybit RFQ both clearly support multi-leg strategies, with Bybit allowing up to 25 legs and Deribit Block RFQ supporting combinations of up to 20 legs.
- You don't want to reveal your intentions: Placing a large order on the order book is like telling the market your direction and size, which can make you a target for predatory trading. RFQ is a private off-market quote and is not public before the trade is completed.
- You need price certainty: The core promise of RFQ is "the price you accept is the price you trade at — zero slippage." If your strategy is extremely sensitive to entry price, RFQ is more suitable.
Three practical tips
- Check the minimum size first: If your notional amount is below $10,000 (the daily situation for most retail traders), the order book is the more practical choice.
- Compare quotes from multiple market makers before deciding: A benefit of RFQ is that you can request quotes from several parties at the same time (for example, Bybit allows you to select 30 firms, and the system shows the best 3), so you get competitive quotes instead of relying on only one.
- If you don't accept the RFQ, you can still go back to the order book: RFQ and the order book are connected. Options bought through RFQ can be sold on the order book, and vice versa.
How to verify execution
Order book: after execution, look at the difference between the "average fill price" and the "average order price." That is your actual slippage, so you know exactly what happened. RFQ: check whether the "fill price" in the trade record is exactly the same as the "quoted price," and whether any extra fees were charged.
