Shares of Boeing (NYSE: BA) fell around 1.89% in Monday trading to just $217.08, significantly underperforming what was otherwise a relatively lukewarm day on the market. Over the past month, Boeing shares have been down roughly 6%, while the overall aerospace sector has seen equity valuations rise roughly in line with the S&P 500’s 2.87%. Boeing is still forecasted to report a loss next quarter, despite $21.35 billion in anticipated revenue.