Which Is the Better Aerospace and Defense ETF, Invesco's PPA or State Street's XAR?

The article compares two defense/aerospace ETFs: XAR has a lower 0.35% expense ratio and higher 1-year return of 50.97%, while PPA has lower volatility with a 0.72 beta and smaller 5-year max drawdown of 18.40% versus 32.40% for XAR. PPA also has a larger AUM base at about $8.2 billion and a more diversified 61-holding portfolio, versus XAR’s 41 holdings and more industrials-heavy exposure. The piece is mainly educational and relative-value oriented, with modest implications for sector fund flows rather than a broad market catalyst.

Analysis

The more important signal is not simply “defense is strong,” but that the market is rewarding the factor mix inside the basket. XAR’s equal-weight, smaller-cap tilt is acting like a levered bet on reopening of the industrial supply chain, space/launch optionality, and higher beta names with operating leverage to a sustained procurement cycle. That helps explain why recent returns can outrun the lower-volatility alternative even though the underlying end-demand is the same.

The hidden risk is sequencing: if defense budgets stay elevated but the market narrows leadership, the equal-weight structure can give back sharply as lower-quality hardware and component names de-rate first. PPA’s heavier concentration in the better-capitalized primes should hold up better if rates stay sticky and investors rotate back toward cash-generative, dividend-supported balance sheets; the lower beta profile is effectively a built-in drawdown buffer in a risk-off tape.

A second-order effect is on suppliers and adjacent industrials: sustained strength in contractors tends to pull through advanced materials, propulsion, electronics, and niche manufacturing before it benefits the primes uniformly. That means the cleaner expression may be upstream suppliers with pricing power rather than the headline ETFs themselves, especially if geopolitical headlines fade and defense spending becomes a slower-moving budget story rather than a crisis trade.

Consensus is likely overestimating how persistent the recent relative outperformance is. A lot of the move appears driven by multiple expansion in the more cyclical, smaller names inside XAR; if rates remain elevated or the market broadens beyond defense, that premium can compress quickly. The better asymmetry is to use the recent strength to leg into a quality-versus-beta structure rather than chase the ETF that has already captured the most momentum.

Key Decisions for Investors

• Long PPA / short XAR as a 3-6 month mean-reversion trade: express a quality-over-beta view if defense spending stays constructive but market leadership broadens; stop if XAR continues to outperform on incremental budget headlines.
• For longer-only exposure, prefer PPA over XAR for a 12-month hold: lower drawdown risk matters more than fee savings if geopolitical volatility fades and the trade becomes more about balance-sheet resilience than momentum.
• Pair trade the ETFs with a supplier basket: long CRS and GE vs short a small-cap defense/space basket for 1-2 quarters, targeting the second-order beneficiaries of procurement spend and margin pass-through.
• If you want momentum instead of mean reversion, buy XAR on a 5-8% pullback with a 2-3 month horizon; use a trailing stop because the equal-weight/smaller-cap mix will likely be the first to sell off if risk appetite rolls over.
• Consider partial profit-taking in XAR after extended outperformance and rotate proceeds into RTX or GE for cleaner cash-flow exposure and lower earnings sensitivity to multiple compression.