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Side-by-side financial comparison of AAR CORP (AIR) and WATTS WATER TECHNOLOGIES INC (WTS). Click either name above to swap in a different company.
AAR CORP is the larger business by last-quarter revenue ($795.3M vs $625.1M, roughly 1.3× WATTS WATER TECHNOLOGIES INC). WATTS WATER TECHNOLOGIES INC runs the higher net margin — 13.4% vs 4.4%, a 9.0% gap on every dollar of revenue. On growth, AAR CORP posted the faster year-over-year revenue change (15.9% vs 15.7%). WATTS WATER TECHNOLOGIES INC produced more free cash flow last quarter ($140.3M vs $6.2M).
AAR Corp. is an American provider of aircraft maintenance services to commercial and government customers worldwide. The company is headquartered in Wood Dale, Illinois, a Chicago suburb. The company employs about 6,000 people, operating in about 30 different countries. John Holmes is the current CEO.
AERCO International, Inc. is a manufacturer and supplier of commercial condensing boilers, high efficiency water heating equipment and energy recovery systems in the HVAC/plumbing industry across a variety of markets including education, lodging, government, office buildings, healthcare, industrial and multifamily housing. In 1949, AERCO introduced the industry's first semi-instantaneous, tankless steam-to-water water heater. In 1988, AERCO introduced the first condensing and fully modulating...
AIR vs WTS — Head-to-Head
Income Statement — Q2 FY2026 vs Q4 FY2025
| Metric | | |
|---|---|---|
| Revenue | $795.3M | $625.1M |
| Net Profit | $34.6M | $83.7M |
| Gross Margin | 19.7% | 49.5% |
| Operating Margin | 6.0% | 18.2% |
| Net Margin | 4.4% | 13.4% |
| Revenue YoY | 15.9% | 15.7% |
| Net Profit YoY | 213.1% | 24.0% |
| EPS (diluted) | $0.90 | $2.50 |
Green = leading value per metric. Periods may differ when fiscal calendars don't align.
8-Quarter Revenue & Profit Trend
Side-by-side quarterly history. Quarters aligned by calendar period so offset fiscal years line up.
| Q4 25 | $795.3M | $625.1M | ||
| Q3 25 | $739.6M | $611.7M | ||
| Q2 25 | — | $643.7M | ||
| Q1 25 | — | $558.0M | ||
| Q4 24 | — | $540.4M | ||
| Q3 24 | — | $543.6M | ||
| Q2 24 | — | $597.3M | ||
| Q1 24 | — | $570.9M |
| Q4 25 | $34.6M | $83.7M | ||
| Q3 25 | $34.4M | $82.2M | ||
| Q2 25 | — | $100.9M | ||
| Q1 25 | — | $74.0M | ||
| Q4 24 | — | $67.5M | ||
| Q3 24 | — | $69.1M | ||
| Q2 24 | — | $82.0M | ||
| Q1 24 | — | $72.6M |
| Q4 25 | 19.7% | 49.5% | ||
| Q3 25 | 18.1% | 48.8% | ||
| Q2 25 | — | 50.6% | ||
| Q1 25 | — | 48.8% | ||
| Q4 24 | — | 46.7% | ||
| Q3 24 | — | 47.3% | ||
| Q2 24 | — | 47.7% | ||
| Q1 24 | — | 46.9% |
| Q4 25 | 6.0% | 18.2% | ||
| Q3 25 | 6.4% | 18.2% | ||
| Q2 25 | — | 21.0% | ||
| Q1 25 | — | 15.7% | ||
| Q4 24 | — | 16.5% | ||
| Q3 24 | — | 17.1% | ||
| Q2 24 | — | 18.7% | ||
| Q1 24 | — | 16.9% |
| Q4 25 | 4.4% | 13.4% | ||
| Q3 25 | 4.7% | 13.4% | ||
| Q2 25 | — | 15.7% | ||
| Q1 25 | — | 13.3% | ||
| Q4 24 | — | 12.5% | ||
| Q3 24 | — | 12.7% | ||
| Q2 24 | — | 13.7% | ||
| Q1 24 | — | 12.7% |
| Q4 25 | $0.90 | $2.50 | ||
| Q3 25 | $0.95 | $2.45 | ||
| Q2 25 | — | $3.01 | ||
| Q1 25 | — | $2.21 | ||
| Q4 24 | — | $2.02 | ||
| Q3 24 | — | $2.06 | ||
| Q2 24 | — | $2.44 | ||
| Q1 24 | — | $2.17 |
Balance Sheet & Financial Strength
Snapshot of each company's liquidity, leverage and book value from the latest quarter.
| Metric | | |
|---|---|---|
| Cash + ST InvestmentsLiquidity on hand | $75.6M | $405.5M |
| Total DebtLower is stronger | $952.7M | — |
| Stockholders' EquityBook value | $1.6B | $2.0B |
| Total Assets | $3.2B | $2.9B |
| Debt / EquityLower = less leverage | 0.61× | — |
8-quarter trend — quarters aligned by calendar period.
| Q4 25 | $75.6M | $405.5M | ||
| Q3 25 | $80.0M | $457.7M | ||
| Q2 25 | — | $369.3M | ||
| Q1 25 | — | $336.8M | ||
| Q4 24 | — | $386.9M | ||
| Q3 24 | — | $303.9M | ||
| Q2 24 | — | $279.4M | ||
| Q1 24 | — | $237.1M |
| Q4 25 | $952.7M | — | ||
| Q3 25 | $1.0B | — | ||
| Q2 25 | — | — | ||
| Q1 25 | — | — | ||
| Q4 24 | — | — | ||
| Q3 24 | — | — | ||
| Q2 24 | — | — | ||
| Q1 24 | — | — |
| Q4 25 | $1.6B | $2.0B | ||
| Q3 25 | $1.2B | $2.0B | ||
| Q2 25 | — | $1.9B | ||
| Q1 25 | — | $1.8B | ||
| Q4 24 | — | $1.7B | ||
| Q3 24 | — | $1.7B | ||
| Q2 24 | — | $1.6B | ||
| Q1 24 | — | $1.6B |
| Q4 25 | $3.2B | $2.9B | ||
| Q3 25 | $2.9B | $2.7B | ||
| Q2 25 | — | $2.6B | ||
| Q1 25 | — | $2.5B | ||
| Q4 24 | — | $2.4B | ||
| Q3 24 | — | $2.4B | ||
| Q2 24 | — | $2.4B | ||
| Q1 24 | — | $2.3B |
| Q4 25 | 0.61× | — | ||
| Q3 25 | 0.82× | — | ||
| Q2 25 | — | — | ||
| Q1 25 | — | — | ||
| Q4 24 | — | — | ||
| Q3 24 | — | — | ||
| Q2 24 | — | — | ||
| Q1 24 | — | — |
Cash Flow & Capital Efficiency
How much cash each business actually produces after reinvestment. Cash flow is harder to manipulate than net income.
| Metric | | |
|---|---|---|
| Operating Cash FlowLast quarter | $13.6M | $154.7M |
| Free Cash FlowOCF − Capex | $6.2M | $140.3M |
| FCF MarginFCF / Revenue | 0.8% | 22.4% |
| Capex IntensityCapex / Revenue | 0.9% | 2.3% |
| Cash ConversionOCF / Net Profit | 0.39× | 1.85× |
| TTM Free Cash FlowTrailing 4 quarters | — | $356.3M |
8-quarter trend — quarters aligned by calendar period.
| Q4 25 | $13.6M | $154.7M | ||
| Q3 25 | $-44.9M | $122.4M | ||
| Q2 25 | — | $69.7M | ||
| Q1 25 | — | $55.2M | ||
| Q4 24 | — | $139.5M | ||
| Q3 24 | — | $90.7M | ||
| Q2 24 | — | $85.3M | ||
| Q1 24 | — | $45.6M |
| Q4 25 | $6.2M | $140.3M | ||
| Q3 25 | $-53.6M | $110.9M | ||
| Q2 25 | — | $59.5M | ||
| Q1 25 | — | $45.6M | ||
| Q4 24 | — | $127.5M | ||
| Q3 24 | — | $84.3M | ||
| Q2 24 | — | $78.5M | ||
| Q1 24 | — | $35.5M |
| Q4 25 | 0.8% | 22.4% | ||
| Q3 25 | -7.2% | 18.1% | ||
| Q2 25 | — | 9.2% | ||
| Q1 25 | — | 8.2% | ||
| Q4 24 | — | 23.6% | ||
| Q3 24 | — | 15.5% | ||
| Q2 24 | — | 13.1% | ||
| Q1 24 | — | 6.2% |
| Q4 25 | 0.9% | 2.3% | ||
| Q3 25 | 1.2% | 1.9% | ||
| Q2 25 | — | 1.6% | ||
| Q1 25 | — | 1.7% | ||
| Q4 24 | — | 2.2% | ||
| Q3 24 | — | 1.2% | ||
| Q2 24 | — | 1.1% | ||
| Q1 24 | — | 1.8% |
| Q4 25 | 0.39× | 1.85× | ||
| Q3 25 | -1.31× | 1.49× | ||
| Q2 25 | — | 0.69× | ||
| Q1 25 | — | 0.75× | ||
| Q4 24 | — | 2.07× | ||
| Q3 24 | — | 1.31× | ||
| Q2 24 | — | 1.04× | ||
| Q1 24 | — | 0.63× |
Financial Flow Comparison
Revenue → gross profit → operating profit → net profit for each company.
Revenue Breakdown by Segment
AIR
| Commercial Customer | $268.1M | 34% |
| Repair And Engineering | $244.5M | 31% |
| Integrated Solutions | $175.8M | 22% |
| Government And Defense Customer | $85.5M | 11% |
| Expeditionary Services | $21.4M | 3% |
WTS
Segment breakdown not available.
