It’s not been a great year for transportation stocks. The benchmark SPDR S&P Transportation ETF (NYSEARCA:XTN) has fallen 9% over the past 12 months. That’s a dramatic divergence from the S&P 500, which is up 25% over the same time span.There are several reasons for this. For one, the transportation ETF has investments in airlines and electric vertical takeoff and landing (eVTOL) companies, both of which have seen heavy volatility recently. In addition, broader macroeconomic concerns have caused investors t ...