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Side-by-side financial comparison of ACI WORLDWIDE, INC. (ACIW) and Mirion Technologies, Inc. (MIR). Click either name above to swap in a different company.

ACI WORLDWIDE, INC. is the larger business by last-quarter revenue ($425.7M vs $257.6M, roughly 1.7× Mirion Technologies, Inc.). On growth, Mirion Technologies, Inc. posted the faster year-over-year revenue change (27.5% vs 7.9%). Over the past eight quarters, Mirion Technologies, Inc.'s revenue compounded faster (11.5% CAGR vs 6.8%).

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.

Mirion Technologies, Inc. is a global provider of radiation detection, monitoring, and safety solutions. Its core offerings include personal dosimetry systems, radiation imaging equipment, and risk management software, serving nuclear power, healthcare, defense, and industrial sectors across North America, Europe, and the Asia Pacific.

ACIW vs MIR — Head-to-Head

Bigger by revenue
ACIW
ACIW
1.7× larger
ACIW
$425.7M
$257.6M
MIR
Growing faster (revenue YoY)
MIR
MIR
+19.6% gap
MIR
27.5%
7.9%
ACIW
Faster 2-yr revenue CAGR
MIR
MIR
Annualised
MIR
11.5%
6.8%
ACIW

Income Statement — Q1 FY2026 vs Q1 FY2026

Metric
ACIW
ACIW
MIR
MIR
Revenue
$425.7M
$257.6M
Net Profit
$38.3M
Gross Margin
46.2%
Operating Margin
13.5%
1.4%
Net Margin
9.0%
Revenue YoY
7.9%
27.5%
Net Profit YoY
EPS (diluted)
$0.37
$-0.01

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
MIR
MIR
Q1 26
$425.7M
$257.6M
Q4 25
$481.6M
$277.4M
Q3 25
$482.4M
$223.1M
Q2 25
$401.3M
$222.9M
Q1 25
$394.6M
$202.0M
Q4 24
$453.0M
$254.3M
Q3 24
$451.8M
$206.8M
Q2 24
$373.5M
$207.1M
Net Profit
ACIW
ACIW
MIR
MIR
Q1 26
$38.3M
Q4 25
$64.3M
$17.3M
Q3 25
$91.3M
$2.9M
Q2 25
$12.2M
$8.3M
Q1 25
$58.9M
$300.0K
Q4 24
$98.6M
$15.0M
Q3 24
$81.4M
$-13.6M
Q2 24
$30.9M
$-11.7M
Gross Margin
ACIW
ACIW
MIR
MIR
Q1 26
46.2%
Q4 25
53.0%
48.8%
Q3 25
53.7%
46.8%
Q2 25
41.5%
46.0%
Q1 25
45.9%
47.6%
Q4 24
55.8%
48.1%
Q3 24
56.3%
44.9%
Q2 24
45.6%
47.0%
Operating Margin
ACIW
ACIW
MIR
MIR
Q1 26
13.5%
1.4%
Q4 25
22.6%
9.2%
Q3 25
26.5%
3.3%
Q2 25
8.7%
4.4%
Q1 25
14.8%
4.3%
Q4 24
27.0%
11.4%
Q3 24
27.1%
-0.8%
Q2 24
14.4%
1.1%
Net Margin
ACIW
ACIW
MIR
MIR
Q1 26
9.0%
Q4 25
13.4%
6.2%
Q3 25
18.9%
1.3%
Q2 25
3.0%
3.7%
Q1 25
14.9%
0.1%
Q4 24
21.8%
5.9%
Q3 24
18.0%
-6.6%
Q2 24
8.3%
-5.6%
EPS (diluted)
ACIW
ACIW
MIR
MIR
Q1 26
$0.37
$-0.01
Q4 25
$0.61
$0.07
Q3 25
$0.88
$0.01
Q2 25
$0.12
$0.03
Q1 25
$0.55
$0.00
Q4 24
$0.92
$0.08
Q3 24
$0.77
$-0.07
Q2 24
$0.29
$-0.06

Balance Sheet & Financial Strength

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

Metric
ACIW
ACIW
MIR
MIR
Cash + ST InvestmentsLiquidity on hand
$161.8M
$397.9M
Total DebtLower is stronger
$807.4M
Stockholders' EquityBook value
$1.5B
$1.9B
Total Assets
$3.1B
$3.5B
Debt / EquityLower = less leverage
0.54×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
ACIW
ACIW
MIR
MIR
Q1 26
$161.8M
$397.9M
Q4 25
$196.5M
$412.3M
Q3 25
$199.3M
$933.2M
Q2 25
$189.7M
$262.6M
Q1 25
$230.1M
$185.8M
Q4 24
$216.4M
$175.2M
Q3 24
$177.9M
$133.3M
Q2 24
$157.0M
$122.2M
Total Debt
ACIW
ACIW
MIR
MIR
Q1 26
$807.4M
Q4 25
$817.6M
Q3 25
$867.8M
$444.8M
Q2 25
$898.0M
$444.9M
Q1 25
$845.9M
$686.6M
Q4 24
$924.6M
$686.4M
Q3 24
$994.3M
$685.1M
Q2 24
$1.0B
$684.1M
Stockholders' Equity
ACIW
ACIW
MIR
MIR
Q1 26
$1.5B
$1.9B
Q4 25
$1.5B
$1.9B
Q3 25
$1.5B
$1.8B
Q2 25
$1.4B
$1.5B
Q1 25
$1.5B
$1.5B
Q4 24
$1.4B
$1.5B
Q3 24
$1.3B
$1.5B
Q2 24
$1.2B
$1.5B
Total Assets
ACIW
ACIW
MIR
MIR
Q1 26
$3.1B
$3.5B
Q4 25
$3.1B
$3.6B
Q3 25
$3.2B
$3.5B
Q2 25
$3.1B
$2.7B
Q1 25
$3.2B
$2.6B
Q4 24
$3.0B
$2.6B
Q3 24
$3.1B
$2.7B
Q2 24
$3.4B
$2.6B
Debt / Equity
ACIW
ACIW
MIR
MIR
Q1 26
0.54×
Q4 25
0.54×
Q3 25
0.59×
0.24×
Q2 25
0.64×
0.30×
Q1 25
0.57×
0.46×
Q4 24
0.65×
0.46×
Q3 24
0.75×
0.45×
Q2 24
0.82×
0.45×

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
MIR
MIR
Operating Cash FlowLast quarter
$18.9M
Free Cash FlowOCF − Capex
FCF MarginFCF / Revenue
Capex IntensityCapex / Revenue
Cash ConversionOCF / Net Profit
TTM Free Cash FlowTrailing 4 quarters

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
ACIW
ACIW
MIR
MIR
Q1 26
$18.9M
Q4 25
$121.8M
$73.0M
Q3 25
$73.0M
$22.3M
Q2 25
$49.8M
$12.4M
Q1 25
$78.2M
$35.6M
Q4 24
$126.5M
$60.8M
Q3 24
$54.0M
$17.1M
Q2 24
$55.0M
$15.2M
Free Cash Flow
ACIW
ACIW
MIR
MIR
Q1 26
Q4 25
$116.6M
$63.2M
Q3 25
$69.6M
$13.0M
Q2 25
$47.6M
$3.6M
Q1 25
$76.1M
$27.1M
Q4 24
$119.5M
$49.1M
Q3 24
$50.5M
$3.9M
Q2 24
$53.3M
$4.1M
FCF Margin
ACIW
ACIW
MIR
MIR
Q1 26
Q4 25
24.2%
22.8%
Q3 25
14.4%
5.8%
Q2 25
11.9%
1.6%
Q1 25
19.3%
13.4%
Q4 24
26.4%
19.3%
Q3 24
11.2%
1.9%
Q2 24
14.3%
2.0%
Capex Intensity
ACIW
ACIW
MIR
MIR
Q1 26
Q4 25
1.1%
3.5%
Q3 25
0.7%
4.2%
Q2 25
0.5%
3.9%
Q1 25
0.5%
4.2%
Q4 24
1.5%
4.6%
Q3 24
0.8%
6.4%
Q2 24
0.5%
5.4%
Cash Conversion
ACIW
ACIW
MIR
MIR
Q1 26
Q4 25
1.89×
4.22×
Q3 25
0.80×
7.69×
Q2 25
4.08×
1.49×
Q1 25
1.33×
118.67×
Q4 24
1.28×
4.05×
Q3 24
0.66×
Q2 24
1.78×

Financial Flow Comparison

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

Revenue Breakdown by Segment

ACIW
ACIW

Software as a service and platform as a service$262.0M62%
License$88.0M21%
Maintenance$50.9M12%
Services$24.8M6%

MIR
MIR

Product$197.0M76%
Service$60.6M24%

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