“Boeing (BA) posted its biggest one-day gain since 2008 when it surged nearly 10% last Wednesday after beating earnings expectations by 25 cents and raising its full-year guidance to a range of $9.80 to $10 a share. Caterpillar, too, surged when it reported similar results. That’s a sign that parts of the industrial complex are still strong,” according to Barron’s.

Related: ETF Performance Report: July 2017

Boeing and Caterpillar, both members of the Dow Jones Industrial Average, are both top 10 holdings in XLI and combine for nearly 9.5% of the ETF’s weight.

In addition to political rhetoric, potential catalysts for aerospace ETFs include include, renewed airline pricing power evidenced by higher ticket prices, and more fees paid per traveler, increased airline profitability, new aircraft program launches and continued demand for aircraft models and technology.

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