Glossary · Execution and risk
Bid-ask spread and slippage
The bid-ask spread is the gap between the best price a buyer offers and the best price a seller asks. Crossing it on entry and again on exit is a cost, usually quoted in basis points of the price. Slippage is the extra cost when an order is larger than the size available at the best price and fills deeper in the book.
For two-leg trades both venues' spreads count, on the way in and out. The AlgoBee screener charges each pair both venues' live spreads plus a slippage allowance.
Try it with live rates in the funding calculator