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Side-by-side financial comparison of Atmus Filtration Technologies Inc. (ATMU) and GIBRALTAR INDUSTRIES, INC. (ROCK). Click either name above to swap in a different company.

Atmus Filtration Technologies Inc. is the larger business by last-quarter revenue ($446.6M vs $225.0M, roughly 2.0× GIBRALTAR INDUSTRIES, INC.). On growth, GIBRALTAR INDUSTRIES, INC. posted the faster year-over-year revenue change (24.9% vs 9.8%). Atmus Filtration Technologies Inc. produced more free cash flow last quarter ($31.2M vs $26.2M). Over the past eight quarters, Atmus Filtration Technologies Inc.'s revenue compounded faster (2.3% CAGR vs -12.3%).

Atmus Filtration Technologies Inc. designs, manufactures and distributes high-performance filtration products and tailored solutions. Its portfolio covers air, fuel, oil and hydraulic filtration systems, serving global automotive, heavy-duty vehicle, industrial equipment and aerospace end markets, for both original equipment manufacturers and aftermarket replacement customers.

Gibraltar Industries, Inc. is a leading manufacturer and distributor of specialized building, infrastructure, and renewable energy products. Its offerings include ventilation systems, roofing accessories, solar mounting solutions, and landscape and garden products, serving residential, commercial construction, and clean energy markets primarily across North America, with a focus on innovative, sustainable solutions for its customers.

ATMU vs ROCK — Head-to-Head

Bigger by revenue
ATMU
ATMU
2.0× larger
ATMU
$446.6M
$225.0M
ROCK
Growing faster (revenue YoY)
ROCK
ROCK
+15.1% gap
ROCK
24.9%
9.8%
ATMU
More free cash flow
ATMU
ATMU
$5.0M more FCF
ATMU
$31.2M
$26.2M
ROCK
Faster 2-yr revenue CAGR
ATMU
ATMU
Annualised
ATMU
2.3%
-12.3%
ROCK

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
ATMU
ATMU
ROCK
ROCK
Revenue
$446.6M
$225.0M
Net Profit
$48.0M
Gross Margin
28.5%
25.3%
Operating Margin
15.8%
7.9%
Net Margin
10.7%
Revenue YoY
9.8%
24.9%
Net Profit YoY
19.7%
EPS (diluted)
$0.58

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
ATMU
ATMU
ROCK
ROCK
Q4 25
$446.6M
$225.0M
Q3 25
$447.7M
$310.9M
Q2 25
$453.5M
$309.5M
Q1 25
$416.5M
$290.0M
Q4 24
$406.7M
$180.1M
Q3 24
$403.7M
$277.1M
Q2 24
$432.6M
$273.6M
Q1 24
$426.6M
$292.5M
Net Profit
ATMU
ATMU
ROCK
ROCK
Q4 25
$48.0M
Q3 25
$54.8M
$-89.1M
Q2 25
$59.9M
$26.0M
Q1 25
$44.7M
$21.1M
Q4 24
$40.1M
Q3 24
$43.8M
$34.0M
Q2 24
$56.2M
$32.2M
Q1 24
$45.5M
$24.9M
Gross Margin
ATMU
ATMU
ROCK
ROCK
Q4 25
28.5%
25.3%
Q3 25
28.9%
26.6%
Q2 25
28.9%
28.4%
Q1 25
26.5%
26.8%
Q4 24
26.3%
29.0%
Q3 24
27.6%
29.4%
Q2 24
30.5%
30.5%
Q1 24
26.2%
28.9%
Operating Margin
ATMU
ATMU
ROCK
ROCK
Q4 25
15.8%
7.9%
Q3 25
18.3%
12.8%
Q2 25
18.0%
12.8%
Q1 25
15.6%
8.8%
Q4 24
13.4%
13.3%
Q3 24
15.7%
15.6%
Q2 24
18.4%
14.9%
Q1 24
16.1%
10.8%
Net Margin
ATMU
ATMU
ROCK
ROCK
Q4 25
10.7%
Q3 25
12.2%
-28.6%
Q2 25
13.2%
8.4%
Q1 25
10.7%
7.3%
Q4 24
9.9%
Q3 24
10.8%
12.3%
Q2 24
13.0%
11.8%
Q1 24
10.7%
8.5%
EPS (diluted)
ATMU
ATMU
ROCK
ROCK
Q4 25
$0.58
Q3 25
$0.66
$-2.98
Q2 25
$0.72
$0.87
Q1 25
$0.54
Q4 24
$0.49
Q3 24
$0.52
$1.11
Q2 24
$0.67
$1.05
Q1 24
$0.54

Balance Sheet & Financial Strength

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

Metric
ATMU
ATMU
ROCK
ROCK
Cash + ST InvestmentsLiquidity on hand
$236.4M
$115.7M
Total DebtLower is stronger
$570.0M
$0
Stockholders' EquityBook value
$378.5M
$950.4M
Total Assets
$1.4B
$1.4B
Debt / EquityLower = less leverage
1.51×
0.00×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
ATMU
ATMU
ROCK
ROCK
Q4 25
$236.4M
$115.7M
Q3 25
$218.3M
$89.4M
Q2 25
$190.8M
$43.3M
Q1 25
$183.3M
$25.1M
Q4 24
$184.3M
$269.5M
Q3 24
$196.8M
$228.9M
Q2 24
$160.5M
$179.1M
Q1 24
$149.2M
$146.7M
Total Debt
ATMU
ATMU
ROCK
ROCK
Q4 25
$570.0M
$0
Q3 25
$577.5M
$0
Q2 25
$585.0M
$0
Q1 25
$588.8M
$0
Q4 24
$592.5M
$0
Q3 24
$596.2M
$0
Q2 24
$600.0M
$0
Q1 24
$600.0M
$0
Stockholders' Equity
ATMU
ATMU
ROCK
ROCK
Q4 25
$378.5M
$950.4M
Q3 25
$336.7M
$951.8M
Q2 25
$316.3M
$1.0B
Q1 25
$265.3M
$1.0B
Q4 24
$227.4M
$1.0B
Q3 24
$221.2M
$1.0B
Q2 24
$178.1M
$975.7M
Q1 24
$121.8M
$940.2M
Total Assets
ATMU
ATMU
ROCK
ROCK
Q4 25
$1.4B
$1.4B
Q3 25
$1.3B
$1.4B
Q2 25
$1.3B
$1.5B
Q1 25
$1.2B
$1.4B
Q4 24
$1.2B
$1.4B
Q3 24
$1.2B
$1.4B
Q2 24
$1.2B
$1.4B
Q1 24
$1.1B
$1.3B
Debt / Equity
ATMU
ATMU
ROCK
ROCK
Q4 25
1.51×
0.00×
Q3 25
1.72×
0.00×
Q2 25
1.85×
0.00×
Q1 25
2.22×
0.00×
Q4 24
2.61×
0.00×
Q3 24
2.70×
0.00×
Q2 24
3.37×
0.00×
Q1 24
4.93×
0.00×

Cash Flow & Capital Efficiency

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

Metric
ATMU
ATMU
ROCK
ROCK
Operating Cash FlowLast quarter
$47.5M
$35.5M
Free Cash FlowOCF − Capex
$31.2M
$26.2M
FCF MarginFCF / Revenue
7.0%
11.7%
Capex IntensityCapex / Revenue
3.6%
4.1%
Cash ConversionOCF / Net Profit
0.99×
TTM Free Cash FlowTrailing 4 quarters
$148.8M
$120.6M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
ATMU
ATMU
ROCK
ROCK
Q4 25
$47.5M
$35.5M
Q3 25
$82.1M
$73.0M
Q2 25
$44.4M
$44.9M
Q1 25
$28.7M
$13.7M
Q4 24
$20.0M
$19.9M
Q3 24
$70.7M
$64.7M
Q2 24
$22.9M
$36.5M
Q1 24
$-8.2M
$53.2M
Free Cash Flow
ATMU
ATMU
ROCK
ROCK
Q4 25
$31.2M
$26.2M
Q3 25
$68.9M
$64.8M
Q2 25
$32.4M
$27.3M
Q1 25
$16.3M
$2.3M
Q4 24
$10.0M
$14.1M
Q3 24
$54.3M
$60.5M
Q2 24
$11.3M
$33.5M
Q1 24
$-18.8M
$48.8M
FCF Margin
ATMU
ATMU
ROCK
ROCK
Q4 25
7.0%
11.7%
Q3 25
15.4%
20.8%
Q2 25
7.1%
8.8%
Q1 25
3.9%
0.8%
Q4 24
2.5%
7.8%
Q3 24
13.5%
21.8%
Q2 24
2.6%
12.2%
Q1 24
-4.4%
16.7%
Capex Intensity
ATMU
ATMU
ROCK
ROCK
Q4 25
3.6%
4.1%
Q3 25
2.9%
2.6%
Q2 25
2.6%
5.7%
Q1 25
3.0%
3.9%
Q4 24
2.5%
3.3%
Q3 24
4.1%
1.5%
Q2 24
2.7%
1.1%
Q1 24
2.5%
1.5%
Cash Conversion
ATMU
ATMU
ROCK
ROCK
Q4 25
0.99×
Q3 25
1.50×
Q2 25
0.74×
1.73×
Q1 25
0.64×
0.65×
Q4 24
0.50×
Q3 24
1.61×
1.90×
Q2 24
0.41×
1.13×
Q1 24
-0.18×
2.13×

Financial Flow Comparison

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

Revenue Breakdown by Segment

ATMU
ATMU

Fuel Products$219.1M49%
Lube$84.8M19%
Air$74.0M17%
Other$68.7M15%
Related Party$14.9M3%

ROCK
ROCK

Transferred At Point In Time$183.5M82%
Infrastructure$22.5M10%
Other$18.9M8%

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