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Side-by-side financial comparison of MARTIN MIDSTREAM PARTNERS L.P. (MMLP) and Proto Labs Inc (PRLB). Click either name above to swap in a different company.

MARTIN MIDSTREAM PARTNERS L.P. is the larger business by last-quarter revenue ($187.7M vs $139.3M, roughly 1.3× Proto Labs Inc). Proto Labs Inc runs the higher net margin — 5.8% vs 1.7%, a 4.1% gap on every dollar of revenue. On growth, Proto Labs Inc posted the faster year-over-year revenue change (10.4% vs -2.5%). Over the past eight quarters, Proto Labs Inc's revenue compounded faster (5.3% CAGR vs 0.8%).

Martin Midstream Partners L.P. is a U.S.-based midstream energy services provider. It offers storage, transportation, distribution and processing solutions for crude oil, natural gas liquids, refined petroleum products and specialty chemicals, mainly serving customers across North American energy and industrial segments.

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...

MMLP vs PRLB — Head-to-Head

Bigger by revenue
MMLP
MMLP
1.3× larger
MMLP
$187.7M
$139.3M
PRLB
Growing faster (revenue YoY)
PRLB
PRLB
+12.9% gap
PRLB
10.4%
-2.5%
MMLP
Higher net margin
PRLB
PRLB
4.1% more per $
PRLB
5.8%
1.7%
MMLP
Faster 2-yr revenue CAGR
PRLB
PRLB
Annualised
PRLB
5.3%
0.8%
MMLP

Income Statement — Q1 FY2026 vs Q1 FY2026

Metric
MMLP
MMLP
PRLB
PRLB
Revenue
$187.7M
$139.3M
Net Profit
$3.2M
$8.1M
Gross Margin
45.6%
Operating Margin
4.1%
7.1%
Net Margin
1.7%
5.8%
Revenue YoY
-2.5%
10.4%
Net Profit YoY
-37.1%
125.4%
EPS (diluted)
$0.29

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
MMLP
MMLP
PRLB
PRLB
Q1 26
$187.7M
$139.3M
Q4 25
$174.2M
$136.5M
Q3 25
$168.7M
$135.4M
Q2 25
$180.7M
$135.1M
Q1 25
$192.5M
$126.2M
Q4 24
$171.3M
$121.8M
Q3 24
$170.9M
$125.6M
Q2 24
$184.5M
$125.6M
Net Profit
MMLP
MMLP
PRLB
PRLB
Q1 26
$3.2M
$8.1M
Q4 25
$-2.9M
Q3 25
$-8.4M
$7.2M
Q2 25
$-2.4M
$4.4M
Q1 25
$-1.0M
$3.6M
Q4 24
$-8.9M
Q3 24
$-3.3M
$7.2M
Q2 24
$3.8M
$4.5M
Gross Margin
MMLP
MMLP
PRLB
PRLB
Q1 26
45.6%
Q4 25
57.1%
44.2%
Q3 25
55.1%
45.3%
Q2 25
56.5%
44.3%
Q1 25
53.5%
44.1%
Q4 24
58.2%
42.7%
Q3 24
58.5%
45.6%
Q2 24
58.4%
45.0%
Operating Margin
MMLP
MMLP
PRLB
PRLB
Q1 26
4.1%
7.1%
Q4 25
7.3%
5.0%
Q3 25
4.1%
6.5%
Q2 25
8.2%
3.7%
Q1 25
7.5%
3.6%
Q4 24
4.0%
-1.2%
Q3 24
7.4%
6.8%
Q2 24
10.8%
4.8%
Net Margin
MMLP
MMLP
PRLB
PRLB
Q1 26
1.7%
5.8%
Q4 25
-1.7%
Q3 25
-5.0%
5.3%
Q2 25
-1.3%
3.3%
Q1 25
-0.5%
2.9%
Q4 24
-5.2%
Q3 24
-1.9%
5.7%
Q2 24
2.0%
3.6%
EPS (diluted)
MMLP
MMLP
PRLB
PRLB
Q1 26
$0.29
Q4 25
$0.25
Q3 25
$0.30
Q2 25
$0.18
Q1 25
$0.15
Q4 24
$-0.01
Q3 24
$0.29
Q2 24
$0.18

Balance Sheet & Financial Strength

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

Metric
MMLP
MMLP
PRLB
PRLB
Cash + ST InvestmentsLiquidity on hand
$124.0M
Total DebtLower is stronger
Stockholders' EquityBook value
$683.1M
Total Assets
$537.1M
$778.6M
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
MMLP
MMLP
PRLB
PRLB
Q1 26
$124.0M
Q4 25
$128.1M
Q3 25
$119.2M
Q2 25
$103.2M
Q1 25
$96.8M
Q4 24
$103.1M
Q3 24
$100.5M
Q2 24
$112.9M
Total Debt
MMLP
MMLP
PRLB
PRLB
Q1 26
Q4 25
$428.0M
Q3 25
$441.3M
Q2 25
$427.8M
Q1 25
$451.4M
Q4 24
$437.6M
Q3 24
$469.3M
Q2 24
$439.4M
Stockholders' Equity
MMLP
MMLP
PRLB
PRLB
Q1 26
$683.1M
Q4 25
$673.9M
Q3 25
$664.7M
Q2 25
$664.7M
Q1 25
$656.8M
Q4 24
$670.2M
Q3 24
$680.0M
Q2 24
$685.2M
Total Assets
MMLP
MMLP
PRLB
PRLB
Q1 26
$537.1M
$778.6M
Q4 25
$522.4M
$763.4M
Q3 25
$510.1M
$756.9M
Q2 25
$515.6M
$743.3M
Q1 25
$533.4M
$737.5M
Q4 24
$538.5M
$743.5M
Q3 24
$554.8M
$753.8M
Q2 24
$535.1M
$758.2M

Cash Flow & Capital Efficiency

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

Metric
MMLP
MMLP
PRLB
PRLB
Operating Cash FlowLast quarter
$17.5M
Free Cash FlowOCF − Capex
$-6.0M
FCF MarginFCF / Revenue
-3.2%
Capex IntensityCapex / Revenue
1.6%
Cash ConversionOCF / Net Profit
2.16×
TTM Free Cash FlowTrailing 4 quarters
$27.2M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
MMLP
MMLP
PRLB
PRLB
Q1 26
$17.5M
Q4 25
$22.4M
$16.5M
Q3 25
$-1.2M
$29.1M
Q2 25
$30.9M
$10.6M
Q1 25
$-6.0M
$18.4M
Q4 24
$42.2M
$17.3M
Q3 24
$-15.8M
$24.8M
Q2 24
$11.8M
$14.4M
Free Cash Flow
MMLP
MMLP
PRLB
PRLB
Q1 26
$-6.0M
Q4 25
$15.6M
$8.4M
Q3 25
$-7.9M
$25.0M
Q2 25
$25.6M
$9.1M
Q1 25
$-11.9M
$17.1M
Q4 24
$34.2M
$16.5M
Q3 24
$-25.6M
$23.2M
Q2 24
$-696.0K
$10.2M
FCF Margin
MMLP
MMLP
PRLB
PRLB
Q1 26
-3.2%
Q4 25
8.9%
6.2%
Q3 25
-4.7%
18.5%
Q2 25
14.2%
6.7%
Q1 25
-6.2%
13.6%
Q4 24
20.0%
13.5%
Q3 24
-15.0%
18.5%
Q2 24
-0.4%
8.2%
Capex Intensity
MMLP
MMLP
PRLB
PRLB
Q1 26
1.6%
Q4 25
3.9%
5.9%
Q3 25
4.0%
3.0%
Q2 25
3.0%
1.1%
Q1 25
3.1%
1.0%
Q4 24
4.6%
0.7%
Q3 24
5.8%
1.2%
Q2 24
6.8%
3.3%
Cash Conversion
MMLP
MMLP
PRLB
PRLB
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
3.13×
3.18×

Financial Flow Comparison

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

Revenue Breakdown by Segment

MMLP
MMLP

Specialty products$61.6M33%
Transportation *$52.8M28%
Other$46.5M25%
Terminalling and storage *$22.4M12%
Sulfur services$4.4M2%

PRLB
PRLB

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

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