Defense and Aviation ETF Soars on Dual Demand Surge

The iShares U.S. Aerospace & Defense ETF (ITA) is experiencing a powerful rally, propelled by a confluence of rising military expenditures and a robust recovery in commercial air travel. This unique combination of defense and civilian demand is fueling performance, though questions about its longevity remain.

From a valuation perspective, the aerospace and defense sector does not appear excessively priced relative to the broader market, despite its significant gains. The industry's enterprise-value-to-sales (EV/Sales) ratio stands at 3.4, notably below the S&P 500's ratio of 5.8. The ITA ETF itself trades at a price-to-earnings (P/E) multiple of 32.

When compared to competing funds like the Invesco Aerospace & Defense ETF (PPA) or the SPDR S&P Aerospace & Defense ETF (XAR), the ITA product distinguishes itself with the largest assets under management (AUM), exceeding $15 billion, and a competitive expense ratio of 0.38%. Its market-cap-weighted methodology, however, results in a much heavier concentration in the largest constituents than equal-weighted alternatives.

Should investors sell immediately? Or is it worth buying iShares U.S. Aerospace & Defense ETF?

Key Performance Drivers

Two primary forces are currently powering the sector. First, global geopolitical tensions and security uncertainties are driving increased defense budgets worldwide. Notably, a recent U.S. budget proposal outlined spending of $1.5 trillion for the 2027 fiscal year. Second, the commercial aviation industry continues its strong rebound. Passenger traffic data for November 2025 showed volumes running 5.7% above the prior-year level. This surge in demand is straining supply chains, however, leading to notable bottlenecks and extended wait times for aircraft deliveries.

The ITA ETF provides exposure to this dynamic through a portfolio of 41 U.S. holdings, though it is heavily concentrated. The top ten positions alone account for approximately 75% of the fund's assets. Major holdings include GE Aerospace, with a weighting of nearly 20%, and RTX Corp., at around 16%. Both stocks have posted impressive gains over the past twelve months, advancing more than 80% and 70%, respectively.

Technical Outlook and Fund Mechanics

As of January 21, 2026, technical indicators suggest positive momentum remains intact for the ETF. Key price levels to watch include a resistance point at $241.89 and a support level at $237.36. Investors should also note that the fund's quarterly rebalancing, which aligns with its underlying index, may create periodic shifts in its composition throughout the year.