AAR Corp. Undervalued After Defense Contract Expansion

AAR Corp. (NYSE: AIR) shares advanced 4.5% on 16 May 2026 following the announcement of a substantial new defense logistics contract. The aerospace aftermarket specialist secured a multi-year agreement to supply maintenance, repair, and overhaul (MRO) services for a fleet of military transport aircraft. This contract win is projected to contribute over $200 million in incremental revenue. The move reinforces investor confidence in the company's strategic pivot toward government services, which now comprises 38% of total sales.

Context — [why this matters now]

The contract award arrives during a period of elevated defense spending by NATO allies. The current US defense budget authorization exceeds $900 billion for the fiscal year, a 5% year-over-year increase focused on readiness and sustainment. This macro backdrop creates a favorable environment for second-tier defense suppliers like AAR Corp. to capture outsized growth.

AAR's government segment revenue has grown for eight consecutive quarters. This consistent performance contrasts with the more cyclical commercial aviation aftermarket. The company's expansion mirrors a broader trend of mid-cap industrials gaining market share as prime contractors face production bottlenecks.

The last significant contract award of this magnitude for AAR occurred in November 2024, a $150 million deal for rotorcraft support. The larger scale of the current agreement signals the company's enhanced capability to manage complex, long-term logistics programs. This evolution is a direct result of AAR's capital investment in specialized repair stations over the past three years.

Data — [what the numbers show]

AAR Corp.'s financial metrics highlight a disconnect between its operational performance and market valuation. The stock trades at a forward price-to-earnings (P/E) ratio of 16.5, a significant discount to the aerospace and defense sector average of 20.7. This valuation gap persists despite AAR's projected earnings growth of 12% for the current fiscal year.

The company's government sales surged to $640 million in the last fiscal year, up from $480 million two years prior. Commercial aviation sales also remain strong at $1.04 billion. AAR's balance sheet shows a net debt-to-EBITDA ratio of 1.8x, below the 2.5x level that typically triggers investor concern for industrial companies.

| Metric | AAR Corp. (AIR) | Peer Median |

| :--- | :--- | :--- |

| Forward P/E | 16.5x | 20.7x |

| EBITDA Margin | 11.2% | 13.5% |

| YTD Stock Performance | +14% | +9% |

AAR's return on invested capital (ROIC) of 9.5% exceeds its weighted average cost of capital (WACC), estimated at 8.1%. This positive spread indicates the company is creating value from its recent investments. The stock's 14% year-to-date gain outpaces the iShares U.S. Aerospace & Defense ETF (ITA), which is up 9%.

Analysis — [what it means for markets / sectors / tickers]

The contract win solidifies AAR Corp.'s competitive position against larger rivals like Heico Corporation (HEI) and TransDigm Group (TDG). While those companies command premium valuations due to scale, AAR's niche in mobility and transport aircraft support offers a defensible moat. The deal may pressure margins at smaller MRO specialists like AeroVironment (AVAV), which compete for similar talent and resources.

A key risk to the bullish thesis is AAR's customer concentration. A single government agency accounts for approximately 25% of total revenue. Any budgetary shift or program cancellation at this agency could materially impact financial results. The company's relatively small market capitalization of $2.8 billion also limits liquidity, making the stock susceptible to higher volatility during broad market sell-offs.

Institutional positioning data indicates hedge funds have been increasing their long exposure to AIR since the start of the quarter. Net options flow has been skewed toward calls, with open interest building at the $40 strike price for July expiration. This activity suggests professional investors anticipate further positive catalysts.

Outlook — [what to watch next]

The primary near-term catalyst is AAR Corp.'s fourth-quarter and full-year earnings report, scheduled for 24 July 2026. Investors will scrutinize management's guidance for the new fiscal year, particularly any margin projections for the government segment. Analysts will also seek clarity on the capital allocation strategy, specifically the potential for share repurchases given the company's strong free cash flow generation.

The next major defense budget proposal, expected in early February 2027, will provide critical insight into the sustainability of current spending levels. Any deviation from the projected 3-5% annual growth rate for defense procurement could reset valuations across the sector. Key technical levels for AIR stock include support at $36.50, its 100-day moving average, and resistance near $42, the stock's 52-week high.

Frequently Asked Questions

How does AAR Corp. make money?

AAR Corp. generates revenue through two primary segments: aviation services and expeditionary services. The aviation services segment provides MRO, parts supply, and inventory management for commercial and government aircraft operators. The expeditionary services segment manufactures and integrates mission-ready solutions, including composite products and mobility systems, primarily for defense customers. The company's business model relies on long-term contracts and the recurring nature of aircraft maintenance.

What is the difference between AAR and major defense primes?

Unlike major defense primes like Lockheed Martin (LMT) or Raytheon (RTX) that develop and produce major weapon systems, AAR Corp. operates as a supplier and service provider. The company focuses on the aftermarket, providing sustainment and support services after aircraft are deployed. This business typically features higher recurring revenue and lower research and development costs than prime contracting, but also operates at lower profit margins.

Is AAR Corp. a good dividend stock?

AAR Corp. does not currently pay a dividend, reinvesting all profits back into the business for growth initiatives like acquisitions and facility expansions. This is common among mid-cap companies in a growth phase. Investors seeking income from the aerospace and defense sector might consider larger, mature companies like General Dynamics (GD) or Northrop Grumman (NOC), which have established dividend policies and higher yields.

Bottom Line

AAR Corp. trades at a sector discount despite strong government contract growth and a positive ROIC-WACC spread.

Disclaimer: This article is for informational purposes only and does not constitute investment advice. CFD trading carries high risk of capital loss.