private void PositionSummaryItems_Updated(object sender, AccountPositionModelEventArgs e) { if (e.AcctPosition != null) { PositionSummaryItem positionSummaryItem = PositionSummaryItems.First(p => p.TickerSymbol == e.AcctPosition.TickerSymbol); if (positionSummaryItem != null) { positionSummaryItem.Shares = e.AcctPosition.Shares; positionSummaryItem.CostBasis = e.AcctPosition.CostBasis; } } }