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Side-by-side financial comparison of ACME UNITED CORP (ACU) and PDF SOLUTIONS INC (PDFS). Click either name above to swap in a different company.

PDF SOLUTIONS INC is the larger business by last-quarter revenue ($62.4M vs $52.3M, roughly 1.2× ACME UNITED CORP). ACME UNITED CORP runs the higher net margin — 1.9% vs -0.1%, a 2.0% gap on every dollar of revenue. On growth, PDF SOLUTIONS INC posted the faster year-over-year revenue change (24.6% vs 13.8%). Over the past eight quarters, PDF SOLUTIONS INC's revenue compounded faster (22.9% CAGR vs -2.9%).

Acme United Corporation is a supplier of cutting, measuring and safety products for the school, home, office, hardware and industrial markets. The company was organized as a partnership in 1867 and incorporated in 1873 under the laws of the State of Connecticut. It is publicly traded on the NYSE American with symbol ACU.

PDF Solutions, Inc. is an American multinational software and engineering services company based in Santa Clara, California. The company is listed in the Nasdaq stock exchange under the ticker symbol PDFS.

ACU vs PDFS — Head-to-Head

Bigger by revenue
PDFS
PDFS
1.2× larger
PDFS
$62.4M
$52.3M
ACU
Growing faster (revenue YoY)
PDFS
PDFS
+10.8% gap
PDFS
24.6%
13.8%
ACU
Higher net margin
ACU
ACU
2.0% more per $
ACU
1.9%
-0.1%
PDFS
Faster 2-yr revenue CAGR
PDFS
PDFS
Annualised
PDFS
22.9%
-2.9%
ACU

Income Statement — Q1 FY2026 vs Q4 FY2025

Metric
ACU
ACU
PDFS
PDFS
Revenue
$52.3M
$62.4M
Net Profit
$985.0K
$-48.0K
Gross Margin
39.7%
72.9%
Operating Margin
3.3%
5.5%
Net Margin
1.9%
-0.1%
Revenue YoY
13.8%
24.6%
Net Profit YoY
-40.4%
-108.9%
EPS (diluted)
$0.24
$0.00

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
ACU
ACU
PDFS
PDFS
Q1 26
$52.3M
Q4 25
$47.5M
$62.4M
Q3 25
$49.1M
$57.1M
Q2 25
$54.0M
$51.7M
Q1 25
$46.0M
$47.8M
Q4 24
$45.9M
$50.1M
Q3 24
$48.2M
$46.4M
Q2 24
$55.4M
$41.7M
Net Profit
ACU
ACU
PDFS
PDFS
Q1 26
$985.0K
Q4 25
$1.9M
$-48.0K
Q3 25
$1.9M
$1.3M
Q2 25
$4.8M
$1.1M
Q1 25
$1.7M
$-3.0M
Q4 24
$1.7M
$539.0K
Q3 24
$2.2M
$2.2M
Q2 24
$4.5M
$1.7M
Gross Margin
ACU
ACU
PDFS
PDFS
Q1 26
39.7%
Q4 25
38.2%
72.9%
Q3 25
39.1%
72.3%
Q2 25
41.0%
71.2%
Q1 25
39.0%
72.9%
Q4 24
38.7%
68.3%
Q3 24
38.5%
73.1%
Q2 24
40.8%
70.6%
Operating Margin
ACU
ACU
PDFS
PDFS
Q1 26
3.3%
Q4 25
6.1%
5.5%
Q3 25
6.1%
8.5%
Q2 25
11.8%
2.2%
Q1 25
5.3%
-7.4%
Q4 24
5.0%
1.0%
Q3 24
6.1%
4.6%
Q2 24
11.5%
0.6%
Net Margin
ACU
ACU
PDFS
PDFS
Q1 26
1.9%
Q4 25
3.9%
-0.1%
Q3 25
3.9%
2.3%
Q2 25
8.8%
2.2%
Q1 25
3.6%
-6.3%
Q4 24
3.7%
1.1%
Q3 24
4.6%
4.8%
Q2 24
8.0%
4.1%
EPS (diluted)
ACU
ACU
PDFS
PDFS
Q1 26
$0.24
Q4 25
$0.46
$0.00
Q3 25
$0.46
$0.03
Q2 25
$1.16
$0.03
Q1 25
$0.41
$-0.08
Q4 24
$0.43
$0.01
Q3 24
$0.54
$0.06
Q2 24
$1.09
$0.04

Balance Sheet & Financial Strength

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

Metric
ACU
ACU
PDFS
PDFS
Cash + ST InvestmentsLiquidity on hand
$4.2M
$42.2M
Total DebtLower is stronger
$33.0M
$67.0M
Stockholders' EquityBook value
$116.7M
$271.0M
Total Assets
$195.2M
$418.7M
Debt / EquityLower = less leverage
0.28×
0.25×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
ACU
ACU
PDFS
PDFS
Q1 26
$4.2M
Q4 25
$3.6M
$42.2M
Q3 25
$5.1M
$35.9M
Q2 25
$3.6M
$40.4M
Q1 25
$3.4M
$54.1M
Q4 24
$6.4M
$114.9M
Q3 24
$5.7M
$120.2M
Q2 24
$3.8M
$117.9M
Total Debt
ACU
ACU
PDFS
PDFS
Q1 26
$33.0M
Q4 25
$67.0M
Q3 25
$67.6M
Q2 25
$68.1M
Q1 25
$68.7M
Q4 24
Q3 24
Q2 24
Stockholders' Equity
ACU
ACU
PDFS
PDFS
Q1 26
$116.7M
Q4 25
$117.6M
$271.0M
Q3 25
$115.8M
$264.4M
Q2 25
$113.7M
$257.5M
Q1 25
$108.3M
$249.0M
Q4 24
$107.0M
$246.0M
Q3 24
$106.3M
$240.5M
Q2 24
$104.0M
$232.2M
Total Assets
ACU
ACU
PDFS
PDFS
Q1 26
$195.2M
Q4 25
$171.0M
$418.7M
Q3 25
$173.0M
$406.4M
Q2 25
$170.9M
$391.1M
Q1 25
$163.0M
$390.0M
Q4 24
$162.2M
$315.3M
Q3 24
$165.5M
$307.4M
Q2 24
$173.5M
$298.0M
Debt / Equity
ACU
ACU
PDFS
PDFS
Q1 26
0.28×
Q4 25
0.25×
Q3 25
0.26×
Q2 25
0.26×
Q1 25
0.28×
Q4 24
Q3 24
Q2 24

Cash Flow & Capital Efficiency

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

Metric
ACU
ACU
PDFS
PDFS
Operating Cash FlowLast quarter
$17.3M
Free Cash FlowOCF − Capex
$7.5M
FCF MarginFCF / Revenue
12.1%
Capex IntensityCapex / Revenue
15.7%
Cash ConversionOCF / Net Profit
TTM Free Cash FlowTrailing 4 quarters
$-8.6M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
ACU
ACU
PDFS
PDFS
Q1 26
Q4 25
$8.2M
$17.3M
Q3 25
$7.1M
$3.3M
Q2 25
$6.3M
$-5.2M
Q1 25
$-3.3M
$8.6M
Q4 24
$6.4M
$1.6M
Q3 24
$8.9M
$9.3M
Q2 24
$6.9M
$684.0K
Free Cash Flow
ACU
ACU
PDFS
PDFS
Q1 26
Q4 25
$7.3M
$7.5M
Q3 25
$301.0K
$-2.9M
Q2 25
$4.7M
$-13.8M
Q1 25
$-4.7M
$535.0K
Q4 24
$4.7M
$-4.0M
Q3 24
$7.5M
$5.1M
Q2 24
$4.4M
$-4.6M
FCF Margin
ACU
ACU
PDFS
PDFS
Q1 26
Q4 25
15.3%
12.1%
Q3 25
0.6%
-5.1%
Q2 25
8.7%
-26.6%
Q1 25
-10.2%
1.1%
Q4 24
10.2%
-8.0%
Q3 24
15.6%
11.0%
Q2 24
8.0%
-11.1%
Capex Intensity
ACU
ACU
PDFS
PDFS
Q1 26
Q4 25
1.9%
15.7%
Q3 25
13.8%
10.8%
Q2 25
3.0%
16.5%
Q1 25
2.9%
17.0%
Q4 24
3.7%
11.3%
Q3 24
2.8%
9.0%
Q2 24
4.5%
12.8%
Cash Conversion
ACU
ACU
PDFS
PDFS
Q1 26
Q4 25
4.34×
Q3 25
3.72×
2.54×
Q2 25
1.33×
-4.55×
Q1 25
-2.02×
Q4 24
3.73×
2.98×
Q3 24
3.99×
4.20×
Q2 24
1.55×
0.40×

Financial Flow Comparison

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

Revenue Breakdown by Segment

ACU
ACU

Segment breakdown not available.

PDFS
PDFS

Volumebased$38.0M61%
Other$24.4M39%

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