vs

Side-by-side financial comparison of DONALDSON Co INC (DCI) and STAR GROUP, L.P. (SGU). Click either name above to swap in a different company.

DONALDSON Co INC is the larger business by last-quarter revenue ($935.4M vs $539.3M, roughly 1.7× STAR GROUP, L.P.). DONALDSON Co INC runs the higher net margin — 12.2% vs 6.6%, a 5.5% gap on every dollar of revenue. On growth, STAR GROUP, L.P. posted the faster year-over-year revenue change (10.5% vs 3.9%). DONALDSON Co INC produced more free cash flow last quarter ($111.2M vs $-59.7M).

Donaldson Company, Inc. is a filtration company engaged in the production and marketing of filtration products used in a variety of industry sectors, including commercial/industrial, aerospace, chemical, alternative energy (windmills), food & beverage, and pharmaceuticals. Also the company's research division, located in Minneapolis, Minn., participated in defense-related projects for various military applications.

Lone Star Funds, legal name of main entity Lone Star Global Acquisitions, Ltd. is a global private equity firm that invests in corporate equity, real estate, credit, and other financial assets. The founder of Lone Star established its first fund in 1995 and Lone Star has to date organized 25 private equity funds with total capital commitments since inception of over $95 billion. Lone Star's investors include corporate and public pension funds, sovereign wealth funds, university endowments, fo...

DCI vs SGU — Head-to-Head

Bigger by revenue
DCI
DCI
1.7× larger
DCI
$935.4M
$539.3M
SGU
Growing faster (revenue YoY)
SGU
SGU
+6.6% gap
SGU
10.5%
3.9%
DCI
Higher net margin
DCI
DCI
5.5% more per $
DCI
12.2%
6.6%
SGU
More free cash flow
DCI
DCI
$170.9M more FCF
DCI
$111.2M
$-59.7M
SGU

Income Statement — Q1 FY2026 vs Q1 FY2026

Metric
DCI
DCI
SGU
SGU
Revenue
$935.4M
$539.3M
Net Profit
$113.9M
$35.8M
Gross Margin
35.2%
Operating Margin
16.0%
10.1%
Net Margin
12.2%
6.6%
Revenue YoY
3.9%
10.5%
Net Profit YoY
15.1%
8.8%
EPS (diluted)
$0.97

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
DCI
DCI
SGU
SGU
Q4 25
$935.4M
$539.3M
Q3 25
$980.7M
Q2 25
$940.1M
Q1 25
$870.0M
Q4 24
$900.1M
Q3 24
$935.4M
Q2 24
$927.9M
Q1 24
$876.7M
Net Profit
DCI
DCI
SGU
SGU
Q4 25
$113.9M
$35.8M
Q3 25
$114.3M
Q2 25
$57.8M
Q1 25
$95.9M
Q4 24
$99.0M
Q3 24
$109.7M
Q2 24
$113.5M
Q1 24
$98.7M
Gross Margin
DCI
DCI
SGU
SGU
Q4 25
35.2%
Q3 25
34.5%
Q2 25
34.2%
Q1 25
35.2%
Q4 24
35.5%
Q3 24
35.8%
Q2 24
35.6%
Q1 24
35.2%
Operating Margin
DCI
DCI
SGU
SGU
Q4 25
16.0%
10.1%
Q3 25
15.5%
Q2 25
9.3%
Q1 25
14.4%
Q4 24
14.5%
Q3 24
15.6%
Q2 24
15.5%
Q1 24
14.8%
Net Margin
DCI
DCI
SGU
SGU
Q4 25
12.2%
6.6%
Q3 25
11.7%
Q2 25
6.1%
Q1 25
11.0%
Q4 24
11.0%
Q3 24
11.7%
Q2 24
12.2%
Q1 24
11.3%
EPS (diluted)
DCI
DCI
SGU
SGU
Q4 25
$0.97
Q3 25
$0.97
Q2 25
$0.48
Q1 25
$0.79
Q4 24
$0.81
Q3 24
$0.90
Q2 24
$0.92
Q1 24
$0.81

Balance Sheet & Financial Strength

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

Metric
DCI
DCI
SGU
SGU
Cash + ST InvestmentsLiquidity on hand
$210.7M
$19.9M
Total DebtLower is stronger
$671.5M
$254.8M
Stockholders' EquityBook value
$1.5B
Total Assets
$3.0B
$1.1B
Debt / EquityLower = less leverage
0.44×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
DCI
DCI
SGU
SGU
Q4 25
$210.7M
$19.9M
Q3 25
$180.4M
Q2 25
$178.5M
Q1 25
$189.1M
Q4 24
$221.2M
Q3 24
$232.7M
Q2 24
$223.7M
Q1 24
$193.8M
Total Debt
DCI
DCI
SGU
SGU
Q4 25
$671.5M
$254.8M
Q3 25
$630.4M
Q2 25
$638.8M
Q1 25
$514.7M
Q4 24
$538.6M
Q3 24
$483.4M
Q2 24
$481.8M
Q1 24
$352.0M
Stockholders' Equity
DCI
DCI
SGU
SGU
Q4 25
$1.5B
Q3 25
$1.5B
Q2 25
$1.5B
Q1 25
$1.5B
Q4 24
$1.5B
Q3 24
$1.5B
Q2 24
$1.5B
Q1 24
$1.4B
Total Assets
DCI
DCI
SGU
SGU
Q4 25
$3.0B
$1.1B
Q3 25
$3.0B
Q2 25
$3.0B
Q1 25
$3.0B
Q4 24
$3.0B
Q3 24
$2.9B
Q2 24
$2.9B
Q1 24
$2.8B
Debt / Equity
DCI
DCI
SGU
SGU
Q4 25
0.44×
Q3 25
0.43×
Q2 25
0.44×
Q1 25
0.33×
Q4 24
0.35×
Q3 24
0.32×
Q2 24
0.32×
Q1 24
0.26×

Cash Flow & Capital Efficiency

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

Metric
DCI
DCI
SGU
SGU
Operating Cash FlowLast quarter
$125.4M
$-55.2M
Free Cash FlowOCF − Capex
$111.2M
$-59.7M
FCF MarginFCF / Revenue
11.9%
-11.1%
Capex IntensityCapex / Revenue
1.5%
0.8%
Cash ConversionOCF / Net Profit
1.10×
-1.54×
TTM Free Cash FlowTrailing 4 quarters
$403.2M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
DCI
DCI
SGU
SGU
Q4 25
$125.4M
$-55.2M
Q3 25
$167.8M
Q2 25
$87.7M
Q1 25
$90.4M
Q4 24
$72.9M
Q3 24
$126.0M
Q2 24
$141.5M
Q1 24
$87.0M
Free Cash Flow
DCI
DCI
SGU
SGU
Q4 25
$111.2M
$-59.7M
Q3 25
$147.5M
Q2 25
$73.0M
Q1 25
$71.5M
Q4 24
$47.9M
Q3 24
$106.2M
Q2 24
$120.2M
Q1 24
$65.7M
FCF Margin
DCI
DCI
SGU
SGU
Q4 25
11.9%
-11.1%
Q3 25
15.0%
Q2 25
7.8%
Q1 25
8.2%
Q4 24
5.3%
Q3 24
11.4%
Q2 24
13.0%
Q1 24
7.5%
Capex Intensity
DCI
DCI
SGU
SGU
Q4 25
1.5%
0.8%
Q3 25
2.1%
Q2 25
1.6%
Q1 25
2.2%
Q4 24
2.8%
Q3 24
2.1%
Q2 24
2.3%
Q1 24
2.4%
Cash Conversion
DCI
DCI
SGU
SGU
Q4 25
1.10×
-1.54×
Q3 25
1.47×
Q2 25
1.52×
Q1 25
0.94×
Q4 24
0.74×
Q3 24
1.15×
Q2 24
1.25×
Q1 24
0.88×

Financial Flow Comparison

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

Revenue Breakdown by Segment

DCI
DCI

Aftermarket Products$447.1M48%
Industrial Filtration Solutions Products$222.6M24%
Off Road Products$86.5M9%
Life Sciences Segment$80.0M9%
Other$39.1M4%
Aerospace And Defense Products$37.1M4%
On Road Products$23.0M2%

SGU
SGU

Home Heating Oil And Propane$372.6M69%
Motor Fuel And Other Petroleum Products$75.4M14%
Equipment Installations$39.6M7%
Equipment Maintenance Service Contracts$30.3M6%
Billable Call Services$21.4M4%

Related Comparisons