Defense Spending Surging: MISL vs ITA ETFs for 2026

Defense Spending Surging and What It Means for Investors

When big shifts happen in government budgets, investors notice. In recent years, the national security posture of the United States and allied nations has helped push defense spending higher, with modernization programs, missile defense, cyber security, and space-centric capabilities taking center stage. For someone building a portfolio with an eye on growth, risk, and diversification, the headline is clear: defense spending surging creates distinct opportunities in exchange-traded funds (ETFs) that focus on aerospace and defense. Two recognizable options are the MISL and ITA funds. They share a core theme, but their design decisions lead to different outcomes in cost, liquidity, risk, and potential return. By understanding how MISL and ITA differ—and where they overlap—investors can align exposure with their goals and timelines.

What MISL and ITA Track—and Why It Matters

Both MISL (First Trust Indxx Aerospace & Defense ETF) and ITA (iShares U.S. Aerospace & Defense ETF) focus on the domestic aerospace and defense ecosystem. Yet their underlying indices diverge in how they select holdings and weight them, which translates into different risk/return profiles. Here’s the gist:

• MISL uses an index that blends traditional defense hardware with technology-driven players, including advanced systems, software, and manufacturing innovators. This blend tends to tilt MISL toward growth-oriented names that ride modernization cycles alongside government spending.
• ITA tracks a broader, more established set of U.S. aerospace and defense stocks, with a heavier emphasis on large manufacturers and service providers. The result is typically a sturdier, more liquid core exposure to the sector, with a focus on classic defense equities and reliable cash flow.

Both funds are influenced by government budgets, international defense dynamics, and commercial aviation cycles. The interplay of these factors can shape performance differently from year to year, even when the broad theme remains defense-oriented.

Costs and Liquidity: What to Expect in a Real-World Trade

Two practical realities shape how investors use MISL and ITA: expense costs and how easily you can trade the funds. As a quick snapshot:

• Expense ratios: ITA generally carries a lower price tag for ongoing costs, historically around 0.40% per year. MISL tends to be higher, often around 0.60–0.65% per year, reflecting its more growth-oriented approach and index construction.
• Liquidity and trading volume: ITA typically enjoys higher daily trading volume, which translates to tighter bid/ask spreads and easier entry or exit for small accounts. MISL, while still liquid, tends to have lower daily volume and wider spreads during off-peak hours.
• Assets under management: ITA usually oversees several billion dollars, helping with trading resilience and institutional appeal. MISL, with a more targeted niche, tends to manage a smaller, but still substantial, asset base.

For a typical investor, these factors matter when building a portfolio. If you prize lower cost and ease of trading, ITA often fits as a core holding. If you’re aiming for a growth edge with more tech exposure within defense, MISL might be a complementary tilt to your broader allocation.

Portfolio Composition: What Each ETF Holds

Understanding the makeup of MISL and ITA helps explain why their performance can diverge. Here’s a high-level look at the typical mix you’ll see in each fund:

Two quick notes: first, the underlying indices are curated differently, so even with a similar broad theme, the weights inside MISL and ITA can tilt toward slightly different companies. Second, top holdings in each ETF can shift as new contracts and modernization cycles emerge, so it’s wise to review quarterly updates rather than assuming a static lineup.

Real-World Scenarios: How to Use MISL and ITA in Your Portfolio

Let’s walk through a few practical situations that investors commonly face. These examples show how you might combine MISL and ITA with other assets to align with risk tolerance and time horizon.

Scenario A: Core Sector Exposure with a Growth Tilt

Jane is building a portfolio with a 60/40 stock/bond plan and wants exposure to defense while preserving growth potential. She could allocate:

• 55% ITA (core exposure with good liquidity and traditional defense names)
• 15% MISL (growth tilt into defense tech and modernization themes)
• 30% high-quality bonds or bond funds for ballast

Rationale: ITA provides a stable backbone with reliable exposure to large manufacturers, while MISL adds a bit of upside potential from tech-driven defense players. The bond sleeve manages drawdown risk during market turbulence.

Scenario B: Tactical Allocation During Budget Debate

During major defense budget debates or policy shifts, traders may see more volatility in smaller growth-oriented names. An opportunistic approach could be:

• ITA as the primary exposure to maintain liquidity
• A temporary 5–7% tilt to MISL to capture potential upside if modernization programs accelerate
• Maintain a cash reserve or short-term bond position for quick rebalancing

Outcome: You benefit from ITA’s stability while adding a dose of opportunity if new spending commitments or export deals unlock growth in tech-enabled defense.

Scenario C: Long-Term Growth vs. Core Yield

For an investor with a long horizon who wants growth potential and a smaller stake in pure defense yields, a two-pronged strategy might look like this:

• MISL: 25–30% for exposure to defense tech innovation
• ITA: 50–60% for core, dividend-friendly exposure
• 60/40 stock/bond or a broad market sleeve to round out risk

In this setup, MISL serves as a growth engine, while ITA anchors the portfolio with steady cash flows and established names. The overall allocation keeps risk in check while still leaning into the defense spend trajectory.

Risks and Considerations: What to Watch

Any sector exposure comes with specific risks. Here are a few to consider when evaluating MISL and ITA as part of a broader strategy:

• Policy and budget volatility: Defense spending can swing with elections, shifting priorities, and geopolitical events. A sudden budget cut or reprioritization can pressure both funds, especially the growth-tilted MISL.
• Concentration risk: While both funds diversify within aerospace and defense, they remain sector-specific. If the industry faces a prolonged downturn or a disruptive technology setback, results may suffer.
• Interest rate impact: Rising rates can affect valuations of defense stocks and ETF valuations, particularly for growth-oriented components within MISL.
• Liquidity gaps in stressed markets: MISL’s lower volume can lead to wider spreads during periods of stress, which matters for large trades or quick exits.

By balancing these risks with a broader asset mix, investors can benefit from the defense spending surging trend without overconcentrating in a single theme or instrument.

Historical Context: Why This Theme Has Enduring Appeal

Defense-related spending tends to be less sensitive to the whims of consumer cycles and can offer relatively stable demand in times of geopolitical tension. The modernization of fleets, cyber resilience initiatives, space capabilities, and global supply chain resilience all contribute to a durable, long-term demand narrative. For investors, that translates into a recurring opportunity to participate in earnings streams that reflect this ongoing cycle. MISL and ITA are tools to access that theme in a disciplined, transparent way, with different emphases to suit varying investor preferences.

Quick Comparison: MISL vs ITA at a Glance

Use this quick reference to understand where the two ETFs diverge and where they align. The table highlights practical factors that often guide investor decisions.

Putting It All Together: A Simple Plan for Readers

Defining your goal is the first step. If your priority is price efficiency and easy trading, start with ITA as a core position in the aerospace and defense space. If you want a growth-oriented sleeve that leans more into technology-enabled defense solutions, consider adding MISL as a complementary tilt. A practical approach could look like this:

• Core exposure: ITA with 60% of the defense sleeve
• Tilt toward growth tech: MISL with 20–25%
• Other exposure: 15–20% in a broad market or sector-spanning ETF to manage risk

Remember to rebalance at least annually, and adjust if policy shifts or global events change the appetite for defense spending surging. Your portfolio can participate in the trend while staying aligned with your personal risk tolerance and time horizon.

FAQ: Quick Answers to Common Questions

Q1: What does defense spending surging mean for my investments?
A1: It means certain areas like aerospace, defense hardware, and defense technology may see stronger demand. ETFs that focus on this theme, such as MISL and ITA, can offer targeted exposure, but they come with sector-specific risks and varying costs.

Q2: Which ETF should I choose for lower costs?
A2: ITA generally has a lower expense ratio and higher liquidity, making it a cost-efficient core exposure. MISL offers a growth tilt with more tech emphasis and may incur higher fees but provide upside in modernization cycles.

Q3: How often should I rebalance these ETFs?
A3: Consider rebalancing annually or after major policy events. If you use a growth tilt like MISL, you might rebalance more cautiously to preserve gains while maintaining your target exposure.

Q4: Are these ETFs suitable for beginners?
A4: Yes, but with caution. Start with a small position, learn how the sector reacts to news, and diversify across other asset classes to avoid concentration risk.

Q5: What happens if defense budgets decline?
A5: A sustained budget pullback could hurt both funds, especially MISL's growth-oriented holdings. Diversifying beyond the defense sector helps cushion potential drawdowns.

Conclusion: Strategy, Not Speculation

Defensive priorities and modern military technology shape a compelling investment narrative in a world where defense spending surging can influence markets for years. MISL and ITA offer distinct paths into aerospace and defense—from a growth-oriented tilt to a traditional, dividend-friendly core. By understanding the differences, costs, and how each fund behaves in different macro environments, investors can craft a disciplined approach that aligns with their goals. The right move is not to chase a single headline, but to design a thoughtful plan that uses MISL and ITA to capture opportunity while controlling risk.