ReRegisterOrder при изменении стакана.

  Trader.StopOrders.Where(w => w.Security == quote.Security).ToList().ForEach(fixOrder =>
            {
                var changed = false;
                var condition = (QuikStopCondition)fixOrder.StopCondition;
                if (...)
                {
                    condition.StopPrice = quote.BestBid.Price;
                    changed = true;
                }
                else if (...)
                {
                    condition.StopPrice = quote.BestAsk.Price;
                    changed = true;
                }
                var order = fixOrder.Clone();
                order.StopCondition = condition;
                order.Volume = Trader.Positions.FirstOrDefault(w => w.Security == quote.Security).CurrentValue;
                if(changed)TryReRegisterOrderToCurrentTrader(fixOrder, order);
            });