JPMorgan analyst Seth Seifman said he is not surprised that Spirit AeroSystems (SPR) would underperform after the company made comments at the firm's Aviation, Transportation and Industrials Conference about 737 cost pressure in Q1. He also believes the decline in the stock, as well as in shares of Boeing (BA), appears overdone. He thinks Spirit is "taking a hit" now so that it can meet its commitments to Boeing, noting that the company has maintained its earnings outlook for the year and has a history of conservatism. Seifman added that he does not think this morning's 737 MAX news is the only factor weighing on Boeing and Spirit, however, as reports that President Trump is considering $60B of tariffs on Chinese goods are "likely not helping," but he still thinks a rupture in Boeing's relationship with China is unlikely.

Citi lowered the firm's price target on Boeing to $224 from $252 and keeps a Buy rating on the shares. The company's Q1 results were better than expected, but "it's clear there is much left to do," the analyst tells investors in a research note. The firm believes Boeing "will come through this healthier than before." This should position it well to take advantage of its duopoly position in commercial aerospace at a time when backlogs stretch out for roughly a decade and customers are clamoring for new aircraft, contends Citi.

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Reports Q1 revenue $16.6B, consensus $15.22B. "Our first quarter results reflect the immediate actions we've taken to slow down 737 production to drive improvements in quality," said Dave Calhoun, Boeing president and CEO. "We will take the time necessary to strengthen our quality and safety management systems and this work will position us for a stronger and more stable future."