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Side-by-side financial comparison of Proto Labs Inc (PRLB) and CarParts.com, Inc. (PRTS). Click either name above to swap in a different company.

Proto Labs Inc is the larger business by last-quarter revenue ($139.3M vs $120.4M, roughly 1.2× CarParts.com, Inc.). Proto Labs Inc runs the higher net margin — 5.8% vs -9.6%, a 15.4% gap on every dollar of revenue. On growth, Proto Labs Inc posted the faster year-over-year revenue change (10.4% vs -9.8%). Over the past eight quarters, Proto Labs Inc's revenue compounded faster (5.3% CAGR vs -8.6%).

Protolabs is a company that provides rapid manufacturing of 3D printed, CNC-machined, sheet metal, and injection-molded custom parts for prototyping and production. Markets like medical devices, aerospace, electronics, appliances, automotive and consumer products use these parts. Protolabs' headquarters are located in Maple Plain, Minnesota, with Minnesota-based manufacturing facilities in Plymouth, Brooklyn Park, and Rosemount, along with additional facilities in Nashua, New Hampshire and Ca...

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...

PRLB vs PRTS — Head-to-Head

Bigger by revenue
PRLB
PRLB
1.2× larger
PRLB
$139.3M
$120.4M
PRTS
Growing faster (revenue YoY)
PRLB
PRLB
+20.2% gap
PRLB
10.4%
-9.8%
PRTS
Higher net margin
PRLB
PRLB
15.4% more per $
PRLB
5.8%
-9.6%
PRTS
Faster 2-yr revenue CAGR
PRLB
PRLB
Annualised
PRLB
5.3%
-8.6%
PRTS

Income Statement — Q1 FY2026 vs Q4 FY2025

Metric
PRLB
PRLB
PRTS
PRTS
Revenue
$139.3M
$120.4M
Net Profit
$8.1M
$-11.6M
Gross Margin
45.6%
33.2%
Operating Margin
7.1%
Net Margin
5.8%
-9.6%
Revenue YoY
10.4%
-9.8%
Net Profit YoY
125.4%
25.0%
EPS (diluted)
$0.29
$-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
PRLB
PRLB
PRTS
PRTS
Q1 26
$139.3M
Q4 25
$136.5M
$120.4M
Q3 25
$135.4M
$127.8M
Q2 25
$135.1M
$151.9M
Q1 25
$126.2M
$147.4M
Q4 24
$121.8M
$133.5M
Q3 24
$125.6M
$144.8M
Q2 24
$125.6M
$144.3M
Net Profit
PRLB
PRLB
PRTS
PRTS
Q1 26
$8.1M
Q4 25
$-11.6M
Q3 25
$7.2M
$-10.9M
Q2 25
$4.4M
$-12.7M
Q1 25
$3.6M
$-15.3M
Q4 24
$-15.4M
Q3 24
$7.2M
$-10.0M
Q2 24
$4.5M
$-8.7M
Gross Margin
PRLB
PRLB
PRTS
PRTS
Q1 26
45.6%
Q4 25
44.2%
33.2%
Q3 25
45.3%
33.1%
Q2 25
44.3%
32.8%
Q1 25
44.1%
32.1%
Q4 24
42.7%
32.5%
Q3 24
45.6%
35.2%
Q2 24
45.0%
33.5%
Operating Margin
PRLB
PRLB
PRTS
PRTS
Q1 26
7.1%
Q4 25
5.0%
Q3 25
6.5%
-7.9%
Q2 25
3.7%
-8.2%
Q1 25
3.6%
-10.3%
Q4 24
-1.2%
-11.6%
Q3 24
6.8%
-6.9%
Q2 24
4.8%
-6.0%
Net Margin
PRLB
PRLB
PRTS
PRTS
Q1 26
5.8%
Q4 25
-9.6%
Q3 25
5.3%
-8.5%
Q2 25
3.3%
-8.4%
Q1 25
2.9%
-10.4%
Q4 24
-11.5%
Q3 24
5.7%
-6.9%
Q2 24
3.6%
-6.0%
EPS (diluted)
PRLB
PRLB
PRTS
PRTS
Q1 26
$0.29
Q4 25
$0.25
$-0.82
Q3 25
$0.30
$-0.19
Q2 25
$0.18
$-0.23
Q1 25
$0.15
$-0.27
Q4 24
$-0.01
$-0.28
Q3 24
$0.29
$-0.17
Q2 24
$0.18
$-0.15

Balance Sheet & Financial Strength

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

Metric
PRLB
PRLB
PRTS
PRTS
Cash + ST InvestmentsLiquidity on hand
$124.0M
$25.8M
Total DebtLower is stronger
Stockholders' EquityBook value
$683.1M
$53.5M
Total Assets
$778.6M
$184.9M
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
PRLB
PRLB
PRTS
PRTS
Q1 26
$124.0M
Q4 25
$128.1M
$25.8M
Q3 25
$119.2M
Q2 25
$103.2M
Q1 25
$96.8M
Q4 24
$103.1M
Q3 24
$100.5M
Q2 24
$112.9M
Stockholders' Equity
PRLB
PRLB
PRTS
PRTS
Q1 26
$683.1M
Q4 25
$673.9M
$53.5M
Q3 25
$664.7M
$64.2M
Q2 25
$664.7M
$62.4M
Q1 25
$656.8M
$72.8M
Q4 24
$670.2M
$85.2M
Q3 24
$680.0M
$97.2M
Q2 24
$685.2M
$103.9M
Total Assets
PRLB
PRLB
PRTS
PRTS
Q1 26
$778.6M
Q4 25
$763.4M
$184.9M
Q3 25
$756.9M
$200.3M
Q2 25
$743.3M
$189.6M
Q1 25
$737.5M
$216.5M
Q4 24
$743.5M
$210.6M
Q3 24
$753.8M
$227.6M
Q2 24
$758.2M
$238.0M

Cash Flow & Capital Efficiency

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

Metric
PRLB
PRLB
PRTS
PRTS
Operating Cash FlowLast quarter
$17.5M
Free Cash FlowOCF − Capex
FCF MarginFCF / Revenue
Capex IntensityCapex / Revenue
Cash ConversionOCF / Net Profit
2.16×
TTM Free Cash FlowTrailing 4 quarters

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
PRLB
PRLB
PRTS
PRTS
Q1 26
$17.5M
Q4 25
$16.5M
Q3 25
$29.1M
$-6.4M
Q2 25
$10.6M
$-25.6M
Q1 25
$18.4M
$5.5M
Q4 24
$17.3M
$1.8M
Q3 24
$24.8M
$8.5M
Q2 24
$14.4M
$-3.6M
Free Cash Flow
PRLB
PRLB
PRTS
PRTS
Q1 26
Q4 25
$8.4M
Q3 25
$25.0M
$-8.3M
Q2 25
$9.1M
$-27.9M
Q1 25
$17.1M
$3.4M
Q4 24
$16.5M
$-631.0K
Q3 24
$23.2M
$4.9M
Q2 24
$10.2M
$-10.8M
FCF Margin
PRLB
PRLB
PRTS
PRTS
Q1 26
Q4 25
6.2%
Q3 25
18.5%
-6.5%
Q2 25
6.7%
-18.3%
Q1 25
13.6%
2.3%
Q4 24
13.5%
-0.5%
Q3 24
18.5%
3.4%
Q2 24
8.2%
-7.5%
Capex Intensity
PRLB
PRLB
PRTS
PRTS
Q1 26
Q4 25
5.9%
Q3 25
3.0%
1.5%
Q2 25
1.1%
1.5%
Q1 25
1.0%
1.4%
Q4 24
0.7%
1.8%
Q3 24
1.2%
2.5%
Q2 24
3.3%
4.9%
Cash Conversion
PRLB
PRLB
PRTS
PRTS
Q1 26
2.16×
Q4 25
Q3 25
4.03×
Q2 25
2.39×
Q1 25
5.11×
Q4 24
Q3 24
3.44×
Q2 24
3.18×

Financial Flow Comparison

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

Revenue Breakdown by Segment

PRLB
PRLB

CNC Machining$63.2M45%
Injection Molding$51.1M37%
3D Printing$20.5M15%
Sheet Metal$4.4M3%
Other Revenue$207.0K0%

PRTS
PRTS

Segment breakdown not available.

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