The underlying mid-price is the price between the bid and ask prices currently on offer for the stock or ETF. This is a good target for a limit price placed in any order that involves the underlying stock.
The underlying mid price may be added to your Brutus Options Ranker strategy if you have a specific underlying price you'd like to stay close to.
We recommend only using this criterion in target mode. E.g., if you would like to target stocks that trade around $50/share you may target the mid price to $50. We do not recommend minimizing the target price unless coupled with more heavily weighted criteria to ensure that proper underlying and options liquidity are considered as part of the strategy.