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Side-by-side financial comparison of CarParts.com, Inc. (PRTS) and GIBRALTAR INDUSTRIES, INC. (ROCK). Click either name above to swap in a different company.

GIBRALTAR INDUSTRIES, INC. is the larger business by last-quarter revenue ($225.0M vs $120.4M, roughly 1.9× CarParts.com, Inc.). On growth, GIBRALTAR INDUSTRIES, INC. posted the faster year-over-year revenue change (24.9% vs -9.8%). Over the past eight quarters, CarParts.com, Inc.'s revenue compounded faster (-8.6% CAGR vs -12.3%).

Genuine Parts Company (GPC) is an American automotive and industrial parts distributor based in Atlanta, Georgia. Established by brothers Carlyle and Malcolm Fraser in 1928, the company has approximately 60,000 employees. In addition to the United States, GPC has operated in Australasia, Belgium, Canada, France, Germany, Mexico, the Netherlands, Poland, and the United Kingdom. GPC's subsidiaries include industrial parts distributor Motion as well as NAPA Auto Parts, which primarily sells part...

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.

PRTS vs ROCK — Head-to-Head

Bigger by revenue
ROCK
ROCK
1.9× larger
ROCK
$225.0M
$120.4M
PRTS
Growing faster (revenue YoY)
ROCK
ROCK
+34.8% gap
ROCK
24.9%
-9.8%
PRTS
Faster 2-yr revenue CAGR
PRTS
PRTS
Annualised
PRTS
-8.6%
-12.3%
ROCK

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
PRTS
PRTS
ROCK
ROCK
Revenue
$120.4M
$225.0M
Net Profit
$-11.6M
Gross Margin
33.2%
25.3%
Operating Margin
7.9%
Net Margin
-9.6%
Revenue YoY
-9.8%
24.9%
Net Profit YoY
25.0%
EPS (diluted)
$-0.82

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
PRTS
PRTS
ROCK
ROCK
Q4 25
$120.4M
$225.0M
Q3 25
$127.8M
$310.9M
Q2 25
$151.9M
$309.5M
Q1 25
$147.4M
$290.0M
Q4 24
$133.5M
$180.1M
Q3 24
$144.8M
$277.1M
Q2 24
$144.3M
$273.6M
Q1 24
$292.5M
Net Profit
PRTS
PRTS
ROCK
ROCK
Q4 25
$-11.6M
Q3 25
$-10.9M
$-89.1M
Q2 25
$-12.7M
$26.0M
Q1 25
$-15.3M
$21.1M
Q4 24
$-15.4M
Q3 24
$-10.0M
$34.0M
Q2 24
$-8.7M
$32.2M
Q1 24
$24.9M
Gross Margin
PRTS
PRTS
ROCK
ROCK
Q4 25
33.2%
25.3%
Q3 25
33.1%
26.6%
Q2 25
32.8%
28.4%
Q1 25
32.1%
26.8%
Q4 24
32.5%
29.0%
Q3 24
35.2%
29.4%
Q2 24
33.5%
30.5%
Q1 24
28.9%
Operating Margin
PRTS
PRTS
ROCK
ROCK
Q4 25
7.9%
Q3 25
-7.9%
12.8%
Q2 25
-8.2%
12.8%
Q1 25
-10.3%
8.8%
Q4 24
-11.6%
13.3%
Q3 24
-6.9%
15.6%
Q2 24
-6.0%
14.9%
Q1 24
10.8%
Net Margin
PRTS
PRTS
ROCK
ROCK
Q4 25
-9.6%
Q3 25
-8.5%
-28.6%
Q2 25
-8.4%
8.4%
Q1 25
-10.4%
7.3%
Q4 24
-11.5%
Q3 24
-6.9%
12.3%
Q2 24
-6.0%
11.8%
Q1 24
8.5%
EPS (diluted)
PRTS
PRTS
ROCK
ROCK
Q4 25
$-0.82
Q3 25
$-0.19
$-2.98
Q2 25
$-0.23
$0.87
Q1 25
$-0.27
Q4 24
$-0.28
Q3 24
$-0.17
$1.11
Q2 24
$-0.15
$1.05
Q1 24

Balance Sheet & Financial Strength

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

Metric
PRTS
PRTS
ROCK
ROCK
Cash + ST InvestmentsLiquidity on hand
$25.8M
$115.7M
Total DebtLower is stronger
$0
Stockholders' EquityBook value
$53.5M
$950.4M
Total Assets
$184.9M
$1.4B
Debt / EquityLower = less leverage
0.00×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
PRTS
PRTS
ROCK
ROCK
Q4 25
$25.8M
$115.7M
Q3 25
$89.4M
Q2 25
$43.3M
Q1 25
$25.1M
Q4 24
$269.5M
Q3 24
$228.9M
Q2 24
$179.1M
Q1 24
$146.7M
Total Debt
PRTS
PRTS
ROCK
ROCK
Q4 25
$0
Q3 25
$0
Q2 25
$0
Q1 25
$0
Q4 24
$0
Q3 24
$0
Q2 24
$0
Q1 24
$0
Stockholders' Equity
PRTS
PRTS
ROCK
ROCK
Q4 25
$53.5M
$950.4M
Q3 25
$64.2M
$951.8M
Q2 25
$62.4M
$1.0B
Q1 25
$72.8M
$1.0B
Q4 24
$85.2M
$1.0B
Q3 24
$97.2M
$1.0B
Q2 24
$103.9M
$975.7M
Q1 24
$940.2M
Total Assets
PRTS
PRTS
ROCK
ROCK
Q4 25
$184.9M
$1.4B
Q3 25
$200.3M
$1.4B
Q2 25
$189.6M
$1.5B
Q1 25
$216.5M
$1.4B
Q4 24
$210.6M
$1.4B
Q3 24
$227.6M
$1.4B
Q2 24
$238.0M
$1.4B
Q1 24
$1.3B
Debt / Equity
PRTS
PRTS
ROCK
ROCK
Q4 25
0.00×
Q3 25
0.00×
Q2 25
0.00×
Q1 25
0.00×
Q4 24
0.00×
Q3 24
0.00×
Q2 24
0.00×
Q1 24
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
PRTS
PRTS
ROCK
ROCK
Operating Cash FlowLast quarter
$35.5M
Free Cash FlowOCF − Capex
$26.2M
FCF MarginFCF / Revenue
11.7%
Capex IntensityCapex / Revenue
4.1%
Cash ConversionOCF / Net Profit
TTM Free Cash FlowTrailing 4 quarters
$120.6M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
PRTS
PRTS
ROCK
ROCK
Q4 25
$35.5M
Q3 25
$-6.4M
$73.0M
Q2 25
$-25.6M
$44.9M
Q1 25
$5.5M
$13.7M
Q4 24
$1.8M
$19.9M
Q3 24
$8.5M
$64.7M
Q2 24
$-3.6M
$36.5M
Q1 24
$53.2M
Free Cash Flow
PRTS
PRTS
ROCK
ROCK
Q4 25
$26.2M
Q3 25
$-8.3M
$64.8M
Q2 25
$-27.9M
$27.3M
Q1 25
$3.4M
$2.3M
Q4 24
$-631.0K
$14.1M
Q3 24
$4.9M
$60.5M
Q2 24
$-10.8M
$33.5M
Q1 24
$48.8M
FCF Margin
PRTS
PRTS
ROCK
ROCK
Q4 25
11.7%
Q3 25
-6.5%
20.8%
Q2 25
-18.3%
8.8%
Q1 25
2.3%
0.8%
Q4 24
-0.5%
7.8%
Q3 24
3.4%
21.8%
Q2 24
-7.5%
12.2%
Q1 24
16.7%
Capex Intensity
PRTS
PRTS
ROCK
ROCK
Q4 25
4.1%
Q3 25
1.5%
2.6%
Q2 25
1.5%
5.7%
Q1 25
1.4%
3.9%
Q4 24
1.8%
3.3%
Q3 24
2.5%
1.5%
Q2 24
4.9%
1.1%
Q1 24
1.5%
Cash Conversion
PRTS
PRTS
ROCK
ROCK
Q4 25
Q3 25
Q2 25
1.73×
Q1 25
0.65×
Q4 24
Q3 24
1.90×
Q2 24
1.13×
Q1 24
2.13×

Financial Flow Comparison

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

Revenue Breakdown by Segment

PRTS
PRTS

Segment breakdown not available.

ROCK
ROCK

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

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