Mikhail Sukhov Можно прислать измененный пример с котированием для отладки?
 namespace SampleGUI
{
    using System;
    using Ecng.Xaml;
    using StockSharp.Algo;
    using StockSharp.Algo.Strategies;
    using StockSharp.BusinessEntities;
    public class _Strategy : Strategy
    {
        public Security _SECURITY_future;
        private MarketQuotingStrategy Quoting;
        private MarketQuotingStrategy Close_Quoting;
        private Order order_Sell;
        private Order Close_order_Sell;
        public _Strategy(Security SECURITY_future)
        {
            _SECURITY_future = SECURITY_future;
        }
        protected override void  OnStarted()
        {
                _SECURITY_future.WhenMarketDepthChanged()                    
                    .Do(logic_Quoting).Once().Apply();       
            base.OnStarted();
        }
        private void logic_Quoting()
        {
            order_Sell = this.CreateOrder(OrderDirections.Sell, base.Security.BestAsk.Price, Volume);
            Quoting = new MarketQuotingStrategy(order_Sell, new Unit(20), new Unit(-20))
            {
                Volume = 1,
                Security = _SECURITY_future,
                Trader = Trader,
                Portfolio = Portfolio,
            };
            ChildStrategies.Add(Quoting);
            Quoting.WhenStopped().Do(logic_Close).Once().Apply();
        }
        private void logic_Close()
        {
            Close_order_Sell = this.CreateOrder(OrderDirections.Buy, base.Security.BestBid.Price, Volume);
            Close_Quoting = new MarketQuotingStrategy(Close_order_Sell, new Unit(20), new Unit(-20))
            {
                Volume = 1,
                Security = _SECURITY_future,
                Trader = Trader,
                Portfolio = Portfolio,
            };
            ChildStrategies.Add(Close_Quoting);
            Close_Quoting.WhenStopped().Do(logic_Quoting).Once().Apply();
        }
    }
}