Boeing (BA) shares have been in a sweet spot lately. The stock has climbed about 20% so far this year, rebounding strongly from a 32% decline in 2024. Boeing shares have also added 31.6% over the past month, and added 9.6% over the past week (as of May 14, 2025). Its shares have hit a new 52-week high this week.No wonder, Boeing-heavy exchange-traded fund (ETF) iShares U.S. Aerospace & Defense ETF (ITA) hit a 52-week high lately (read: Aerospace & Defense ETFs at a One-Year High: Here's Why).Inside a Diffic ...