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Side-by-side financial comparison of ACI WORLDWIDE, INC. (ACIW) and AAR CORP (AIR). Click either name above to swap in a different company.

AAR CORP is the larger business by last-quarter revenue ($795.3M vs $481.6M, roughly 1.7× ACI WORLDWIDE, INC.). ACI WORLDWIDE, 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 6.3%). ACI WORLDWIDE, INC. produced more free cash flow last quarter ($116.6M vs $6.2M).

ACI Worldwide is a digital payments software company headquartered in Elkhorn, Nebraska, that processes billions of transactions daily equating to trillions of U.S. dollars for customers in 94 countries. Banks, financial institutions, merchants, billers, acquirers, issuers, and other third-party payment service providers use its intelligent solutions to deploy secure payment rails across all channels.

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.

ACIW vs AIR — Head-to-Head

Bigger by revenue
AIR
AIR
1.7× larger
AIR
$795.3M
$481.6M
ACIW
Growing faster (revenue YoY)
AIR
AIR
+9.6% gap
AIR
15.9%
6.3%
ACIW
Higher net margin
ACIW
ACIW
9.0% more per $
ACIW
13.4%
4.4%
AIR
More free cash flow
ACIW
ACIW
$110.4M more FCF
ACIW
$116.6M
$6.2M
AIR

Income Statement — Q4 FY2025 vs Q2 FY2026

Metric
ACIW
ACIW
AIR
AIR
Revenue
$481.6M
$795.3M
Net Profit
$64.3M
$34.6M
Gross Margin
53.0%
19.7%
Operating Margin
22.6%
6.0%
Net Margin
13.4%
4.4%
Revenue YoY
6.3%
15.9%
Net Profit YoY
-34.7%
213.1%
EPS (diluted)
$0.61
$0.90

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.

Revenue
ACIW
ACIW
AIR
AIR
Q4 25
$481.6M
$795.3M
Q3 25
$482.4M
$739.6M
Q2 25
$401.3M
Q1 25
$394.6M
Q4 24
$453.0M
Q3 24
$451.8M
Q2 24
$373.5M
Q1 24
$316.0M
Net Profit
ACIW
ACIW
AIR
AIR
Q4 25
$64.3M
$34.6M
Q3 25
$91.3M
$34.4M
Q2 25
$12.2M
Q1 25
$58.9M
Q4 24
$98.6M
Q3 24
$81.4M
Q2 24
$30.9M
Q1 24
$-7.8M
Gross Margin
ACIW
ACIW
AIR
AIR
Q4 25
53.0%
19.7%
Q3 25
53.7%
18.1%
Q2 25
41.5%
Q1 25
45.9%
Q4 24
55.8%
Q3 24
56.3%
Q2 24
45.6%
Q1 24
39.5%
Operating Margin
ACIW
ACIW
AIR
AIR
Q4 25
22.6%
6.0%
Q3 25
26.5%
6.4%
Q2 25
8.7%
Q1 25
14.8%
Q4 24
27.0%
Q3 24
27.1%
Q2 24
14.4%
Q1 24
3.0%
Net Margin
ACIW
ACIW
AIR
AIR
Q4 25
13.4%
4.4%
Q3 25
18.9%
4.7%
Q2 25
3.0%
Q1 25
14.9%
Q4 24
21.8%
Q3 24
18.0%
Q2 24
8.3%
Q1 24
-2.5%
EPS (diluted)
ACIW
ACIW
AIR
AIR
Q4 25
$0.61
$0.90
Q3 25
$0.88
$0.95
Q2 25
$0.12
Q1 25
$0.55
Q4 24
$0.92
Q3 24
$0.77
Q2 24
$0.29
Q1 24
$-0.07

Balance Sheet & Financial Strength

Snapshot of each company's liquidity, leverage and book value from the latest quarter.

Metric
ACIW
ACIW
AIR
AIR
Cash + ST InvestmentsLiquidity on hand
$196.5M
$75.6M
Total DebtLower is stronger
$817.6M
$952.7M
Stockholders' EquityBook value
$1.5B
$1.6B
Total Assets
$3.1B
$3.2B
Debt / EquityLower = less leverage
0.54×
0.61×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
ACIW
ACIW
AIR
AIR
Q4 25
$196.5M
$75.6M
Q3 25
$199.3M
$80.0M
Q2 25
$189.7M
Q1 25
$230.1M
Q4 24
$216.4M
Q3 24
$177.9M
Q2 24
$157.0M
Q1 24
$183.4M
Total Debt
ACIW
ACIW
AIR
AIR
Q4 25
$817.6M
$952.7M
Q3 25
$867.8M
$1.0B
Q2 25
$898.0M
Q1 25
$845.9M
Q4 24
$924.6M
Q3 24
$994.3M
Q2 24
$1.0B
Q1 24
$1.0B
Stockholders' Equity
ACIW
ACIW
AIR
AIR
Q4 25
$1.5B
$1.6B
Q3 25
$1.5B
$1.2B
Q2 25
$1.4B
Q1 25
$1.5B
Q4 24
$1.4B
Q3 24
$1.3B
Q2 24
$1.2B
Q1 24
$1.3B
Total Assets
ACIW
ACIW
AIR
AIR
Q4 25
$3.1B
$3.2B
Q3 25
$3.2B
$2.9B
Q2 25
$3.1B
Q1 25
$3.2B
Q4 24
$3.0B
Q3 24
$3.1B
Q2 24
$3.4B
Q1 24
$3.3B
Debt / Equity
ACIW
ACIW
AIR
AIR
Q4 25
0.54×
0.61×
Q3 25
0.59×
0.82×
Q2 25
0.64×
Q1 25
0.57×
Q4 24
0.65×
Q3 24
0.75×
Q2 24
0.82×
Q1 24
0.81×

Cash Flow & Capital Efficiency

How much cash each business actually produces after reinvestment. Cash flow is harder to manipulate than net income.

Metric
ACIW
ACIW
AIR
AIR
Operating Cash FlowLast quarter
$121.8M
$13.6M
Free Cash FlowOCF − Capex
$116.6M
$6.2M
FCF MarginFCF / Revenue
24.2%
0.8%
Capex IntensityCapex / Revenue
1.1%
0.9%
Cash ConversionOCF / Net Profit
1.89×
0.39×
TTM Free Cash FlowTrailing 4 quarters
$309.9M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
ACIW
ACIW
AIR
AIR
Q4 25
$121.8M
$13.6M
Q3 25
$73.0M
$-44.9M
Q2 25
$49.8M
Q1 25
$78.2M
Q4 24
$126.5M
Q3 24
$54.0M
Q2 24
$55.0M
Q1 24
$123.2M
Free Cash Flow
ACIW
ACIW
AIR
AIR
Q4 25
$116.6M
$6.2M
Q3 25
$69.6M
$-53.6M
Q2 25
$47.6M
Q1 25
$76.1M
Q4 24
$119.5M
Q3 24
$50.5M
Q2 24
$53.3M
Q1 24
$120.0M
FCF Margin
ACIW
ACIW
AIR
AIR
Q4 25
24.2%
0.8%
Q3 25
14.4%
-7.2%
Q2 25
11.9%
Q1 25
19.3%
Q4 24
26.4%
Q3 24
11.2%
Q2 24
14.3%
Q1 24
38.0%
Capex Intensity
ACIW
ACIW
AIR
AIR
Q4 25
1.1%
0.9%
Q3 25
0.7%
1.2%
Q2 25
0.5%
Q1 25
0.5%
Q4 24
1.5%
Q3 24
0.8%
Q2 24
0.5%
Q1 24
1.0%
Cash Conversion
ACIW
ACIW
AIR
AIR
Q4 25
1.89×
0.39×
Q3 25
0.80×
-1.31×
Q2 25
4.08×
Q1 25
1.33×
Q4 24
1.28×
Q3 24
0.66×
Q2 24
1.78×
Q1 24

Financial Flow Comparison

Revenue → gross profit → operating profit → net profit for each company.

Revenue Breakdown by Segment

ACIW
ACIW

Issuing And Acquiring$183.7M38%
License$158.3M33%
Maintenance$50.8M11%
Software And Platform Service$49.6M10%
Merchant Payments$42.4M9%

AIR
AIR

Commercial Customer$268.1M34%
Repair And Engineering$244.5M31%
Integrated Solutions$175.8M22%
Government And Defense Customer$85.5M11%
Expeditionary Services$21.4M3%

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